Starter
For your first email program.
$16USD / month
$192 billed yearly.
20,000 emails / month
Choose Starter- 5 brands · 3 seats
- 5 custom sending domains
- 500 email verifications/month
- $1.50 / 1,000 extra emails
Nitrosend is the best Klaviyo alternative for teams that run their email from AI, with the top score of 76.5 out of 100 and 9 out of 10 on working from your AI assistant, the heaviest test here. Contacts are unlimited on every plan, so you pay for the emails you send and never for profiles you hold, which is the bill Klaviyo users usually leave over. To run it from AI, add Nitrosend's MCP server (api.nitrosend.com/mcp) to Claude, ChatGPT, Cursor or Codex and sign in with OAuth. The assistant can then write a campaign in your brand's colors, fonts and voice, build the flow behind it, and send it once you approve it. Receipts and newsletters go out on one plan, and it costs the least here: $20 a month for 20,000 emails and $650 for a million emails on Scale including overage. Brevo comes next at 74, then MailerLite and Omnisend, tied at 61.5.
The ranking
Rank 1Nitrosend
76.5 out of 100Total
- Priced by
- Emails sent
- Free plan
- 5,000 emails, then 500 a month
- Entry plan
- $20 a month, 20,000 emails
- Works from your AI assistant9 out of 10Official MCP server runs campaigns, flows and sends from the chat; campaigns and flows stay drafts until approved (MCP registry).
- Emails in your brand, no designer9 out of 10Brand Kit scans the site for colors, fonts and voice, and applies them to every draft on every plan (docs).
- Price8.5 out of 10Unlimited contacts on every plan. $20 a month for 20,000 emails and $650 for a million emails on Scale including overage (pricing).
- Free plan7 out of 105,000 emails to start, then 500 a month, unlimited contacts. New accounts start at 100 recipients per rolling 24 hours (pricing).
- Receipts and newsletters on one plan9 out of 10Transactional and marketing email share one allowance and one API on every plan, Free included (pricing).
- Editor for building by hand6 out of 10A block builder exists for editing by hand, but it is plainer, because the agent is the main way in.
- Integrations, support and track record5 out of 10Shopify, Stripe, HubSpot, Attio and Mailchimp, five bring-your-own sending providers, a Node SDK, a CLI and signed webhooks for transactional email, but a young product from a small team (docs).
Nitrosend
Ask your agent for the next campaign
Connect Nitrosend to Claude, ChatGPT, Cursor or Codex, point Brand Kit at your site, and describe the email. Contacts are unlimited on every plan.
Free: 5,000 emails to start, then 500 a month. No credit card.
Start free
Rank 2Brevo
74 out of 100Total
- Priced by
- Emails sent
- Free plan
- 300 emails a day, 100,000 contacts
- Entry plan
- $9 a month, 5,000 emails
- Works from your AI assistant7 out of 10Official MCP server manages campaigns, contacts and templates, but lists no module for automations (Brevo developers).
- Emails in your brand, no designer7 out of 10Brand library fetches logo, colors, fonts and links from your site into the editor, not voice (Brevo help).
- Price6 out of 10Priced by emails sent. $69 a month for 20,000 on Standard, $32 on Starter without automation, and $999 for a million on Professional (pricing).
- Free plan8 out of 10300 emails a day, up to 100,000 contacts, transactional email included, free forever (Brevo help).
- Receipts and newsletters on one plan9 out of 10Every plan, Free included, has transactional email by API and SMTP in the same volume (pricing FAQ).
- Editor for building by hand8 out of 10Drag-and-drop editor and templates, 4.5 of 5 across 2,722 reviews, Ease of Use the top tag (G2).
- Integrations, support and track record8 out of 10150+ integrations, SMS, WhatsApp and a CRM in one account, phone support on Professional (pricing).
Rank 3Omnisend
61.5 out of 100Total
- Priced by
- Contacts emailed
- Free plan
- 250 contacts, 500 emails a month
- Entry plan
- $16 a month, 500 contacts
- Works from your AI assistant8 out of 10Official Claude connector and ChatGPT plugin, connected by OAuth, whose execute tool runs Send campaign, Create automation workflow and Enable automation workflow (docs).
- Emails in your brand, no designer7 out of 10Imports logo, colors and fonts from your Shopify, WooCommerce or BigCommerce store, not voice (Omnisend help).
- Price3 out of 10Billed by contacts. Standard is $132 a month at 10,000, and above 150,000 it is by quote (pricing).
- Free plan4 out of 10500 emails a month to up to 250 contacts, with 24/7 support (pricing).
- Receipts and newsletters on one plan6 out of 10Order and shipping emails run as automations on every plan, triggered by store events (Omnisend help).
- Editor for building by hand7 out of 104.6 of 5 across 1,245 reviews, but Limited Templates is a recurring complaint (G2).
- Integrations, support and track record8 out of 10335+ integrations, web push and 24/7 live chat on every plan, and SMS on Pro (pricing).
Rank 4MailerLite
61.5 out of 100Total
- Priced by
- Subscribers
- Free plan
- 250 subscribers, 2,500 emails a month
- Entry plan
- $12 a month, 500 subscribers
- Works from your AI assistant8 out of 10Official MCP server with
create_campaign,schedule_campaignandcreate_automationtools (MailerLite help). - Emails in your brand, no designer7 out of 10Brand styles pull logo, colors, fonts and links from your site's URL, but not voice (MailerLite help).
- Price3 out of 10Priced by subscribers. $89 a month at 10,000 on Comfort, and a quote above 200,000, where Comfort is $819 (pricing).
- Free plan5 out of 10250 subscribers and 2,500 emails a month, with 3 automations and knowledge base support (pricing).
- Receipts and newsletters on one plan5 out of 10Transactional email is MailerSend, a separate product the pricing table links out to (pricing).
- Editor for building by hand8 out of 10Three editors on every plan, drag-and-drop included, and 4.6 of 5 across 1,113 reviews (G2).
- Integrations, support and track record7 out of 10100+ integrations, sites and landing pages built in, and 24/7 live chat on Power (pricing).
Rank 5Mailchimp
59 out of 100Total
- Priced by
- Contacts held
- Free plan
- 250 contacts, 500 sends a month
- Entry plan
- $13 a month, 500 contacts
- Works from your AI assistant5 out of 10Its Claude and ChatGPT app drafts campaigns, but Mailchimp's own guide says to finish and send in the web app (Mailchimp).
- Emails in your brand, no designer7 out of 10Brand Kit pulls fonts from your site and generates on-brand layouts, on Essentials and above only (Mailchimp help).
- Price3 out of 10Priced by contacts. $110 a month at 10,000 on Essentials, $135 on Standard, and a quote at 500,000 (pricing).
- Free plan4 out of 10250 contacts and 500 sends a month, with at most 250 a day (Mailchimp help).
- Receipts and newsletters on one plan5 out of 10Transactional is a separate add-on for Standard and Premium, at $20 per 25,000 emails (pricing).
- Editor for building by hand9 out of 10Mature drag-and-drop editor and templates, the most common praise from reviewers, 4.3 of 5 across 12,990 reviews (G2).
- Integrations, support and track record9 out of 10300+ integrations, 24/7 support on paid plans, phone support on Premium, and two decades at scale (pricing).
Rank 6ActiveCampaign
58.5 out of 100Total
- Priced by
- Contacts held
- Free plan
- None, a 14-day trial
- Entry plan
- $15 a month, 1,000 contacts, billed annually
- Works from your AI assistant8 out of 10Official MCP server creates a campaign and sends or schedules it once you approve its summary in the chat, and manages contacts, lists, tags and automations (tools).
- Emails in your brand, no designer7 out of 10AI Brand Kit imports colors, fonts and logos from your URL and builds templates in its editor (ActiveCampaign).
- Price2 out of 10Priced by contacts. Starter is $149 a month at 10,000, billed yearly because no monthly price is published, and above 50,000 it is by quote (pricing).
- Free plan1 out of 10No free plan. A 14-day trial with up to 100 email sends (help).
- Receipts and newsletters on one plan5 out of 10Transactional email is Postmark, a separate product with its own account and bill, linked by an app (ActiveCampaign).
- Editor for building by hand8 out of 10Mature email designer and automation builder, 4.4 of 5 across 14,799 reviews (G2).
- Integrations, support and track record9 out of 101,000+ apps and integrations, premium Salesforce and Dynamics connectors, and a built-in CRM (apps).
How they compare
How each one scores
Scores out of 10, November 10, 2026| What we compared | Nitrosend | Brevo | Omnisend | MailerLite | Mailchimp | ActiveCampaign |
|---|---|---|---|---|---|---|
| Works from your AI assistant20 points | 9 out of 10 | 7 out of 10 | 8 out of 10 | 8 out of 10 | 5 out of 10 | 8 out of 10 |
| Emails in your brand, no designer10 points | 9 out of 10 | 7 out of 10 | 7 out of 10 | 7 out of 10 | 7 out of 10 | 7 out of 10 |
| Price20 points | 8.5 out of 10 | 6 out of 10 | 3 out of 10 | 3 out of 10 | 3 out of 10 | 2 out of 10 |
| Free plan10 points | 7 out of 10 | 8 out of 10 | 4 out of 10 | 5 out of 10 | 4 out of 10 | 1 out of 10 |
| Receipts and newsletters on one plan10 points | 9 out of 10 | 9 out of 10 | 6 out of 10 | 5 out of 10 | 5 out of 10 | 5 out of 10 |
| Editor for building by hand15 points | 6 out of 10 | 8 out of 10 | 7 out of 10 | 8 out of 10 | 9 out of 10 | 8 out of 10 |
| Integrations, support and track record15 points | 5 out of 10 | 8 out of 10 | 8 out of 10 | 7 out of 10 | 9 out of 10 | 9 out of 10 |
| Total scoreout of 100 | 76.5 out of 100,1st | 74 out of 100,2nd | 61.5 out of 100,tied 3rd | 61.5 out of 100,tied 3rd | 59 out of 100,5th | 58.5 out of 100,6th |
Here are the seven yes-or-no questions store owners usually ask before they move off Klaviyo. A tick means the platform does it, as described on its own pages today. A dash means the answer is not a clean yes or no.
6 services, side by side
Checked November 10, 2026QuestionNitrosendBrevoOmnisendMailerLiteMailchimpActiveCampaign
NitrosendBrevoOmnisendMailerLiteMailchimpActiveCampaignSend a campaign from the chatCan an agent send a marketing campaign without anyone opening the web app?Nitrosend: Yes.Brevo: Not a yes or no.Omnisend: Yes.MailerLite: Yes.Mailchimp: No.ActiveCampaign: Yes.
| Service | Answer |
|---|---|
| Nitrosend | Yes. Yes, through the MCP server. Campaigns stay drafts until approved. |
| Brevo | Not a yes or no. Its MCP server creates and manages email campaigns. Its docs list no module for automations. |
| Omnisend | Yes. Yes. Its connector's execute tool runs Send campaign. |
| MailerLite | Yes. Yes. Its MCP server can create and schedule campaigns. |
| Mailchimp | No. Not yet. Its Claude and ChatGPT app drafts the campaign, and Mailchimp's own guide has you finish and send in the web app. |
| ActiveCampaign | Yes. Yes, once you approve its summary in the chat. |
Official MCP serverIs there a first-party MCP server an AI assistant can connect to?Nitrosend: Yes.Brevo: Yes.Omnisend: Yes.MailerLite: Yes.Mailchimp: Not a yes or no.ActiveCampaign: Yes.
| Service | Answer |
|---|---|
| Nitrosend | Yes. Yes. Listed as com.nitrosend/nitrosend on the official MCP registry. |
| Brevo | Yes. Yes, remote-hosted, with 27 modules. |
| Omnisend | Yes. Yes, as a ChatGPT plugin and a Claude connector. |
| MailerLite | Yes. Yes. It can also build automations, with create_automation. |
| Mailchimp | Not a yes or no. Official Claude and ChatGPT app and connectors on Standard and above. The only official MCP server covers Transactional. |
| ActiveCampaign | Yes. Yes, a remote MCP URL on every plan. |
Brand kit from your siteDoes it pick up your logo, colors and fonts from your website?Nitrosend: Yes.Brevo: Yes.Omnisend: Yes.MailerLite: Yes.Mailchimp: Yes.ActiveCampaign: Yes.
| Service | Answer |
|---|---|
| Nitrosend | Yes. Yes. Brand Kit reads colors, fonts and voice from your site. |
| Brevo | Yes. Yes. The brand library fetches logo, colors, fonts and links. |
| Omnisend | Yes. Yes. It imports logo, colors and fonts from the connected store. |
| MailerLite | Yes. Yes. Brand styles pull logo, colors, fonts and links. |
| Mailchimp | Yes. Yes, on Essentials and above. |
| ActiveCampaign | Yes. Yes, with the AI Brand Kit. |
Rarely emailed contacts are freeDo contacts you rarely email stop counting toward the bill?Nitrosend: Yes.Brevo: Yes.Omnisend: No.MailerLite: No.Mailchimp: No.ActiveCampaign: No.
| Service | Answer |
|---|---|
| Nitrosend | Yes. Yes. Contacts are unlimited on every plan. |
| Brevo | Yes. Yes. The bill follows emails sent. |
| Omnisend | No. No. The plan is set by list size. |
| MailerLite | No. No. The plan is set by subscriber count. |
| Mailchimp | No. No. Every contact counts toward the tier, unsubscribed and non-subscribed ones included. |
| ActiveCampaign | No. No. The plan is set by how many contacts you hold. |
Transactional includedAre receipts and resets in the same plan as newsletters?Nitrosend: Yes.Brevo: Yes.Omnisend: No.MailerLite: No.Mailchimp: No.ActiveCampaign: No.
| Service | Answer |
|---|---|
| Nitrosend | Yes. Yes, on every plan including Free. |
| Brevo | Yes. Yes, on every plan including Free. |
| Omnisend | No. No. Transactional emails run as store-triggered automations. |
| MailerLite | No. No. Transactional is MailerSend, a separate product. |
| Mailchimp | No. Add-on to Standard or Premium, $20 per 25,000 emails. |
| ActiveCampaign | No. No. Transactional is Postmark, billed separately. |
Free planIs there a free plan with no time limit?Nitrosend: Yes.Brevo: Yes.Omnisend: Yes.MailerLite: Yes.Mailchimp: Yes.ActiveCampaign: No.
| Service | Answer |
|---|---|
| Nitrosend | Yes. Yes. 5,000 emails to start, then 500 a month. |
| Brevo | Yes. Yes, 300 emails a day. |
| Omnisend | Yes. Yes, up to 250 contacts. |
| MailerLite | Yes. Yes, with a cap on subscribers and on emails a month. |
| Mailchimp | Yes. Yes, up to 250 contacts. |
| ActiveCampaign | No. No. A 14-day trial with up to 100 sends. |
Mature drag-and-drop editorIs there a polished visual editor for a person building by hand?Nitrosend: Not a yes or no.Brevo: Yes.Omnisend: Yes.MailerLite: Yes.Mailchimp: Yes.ActiveCampaign: Yes.
| Service | Answer |
|---|---|
| Nitrosend | Not a yes or no. A block builder exists. The agent is the main way in. |
| Brevo | Yes. Yes, with templates and a brand library. |
| Omnisend | Yes. Yes, a drag-and-drop editor with prebuilt store workflows. |
| MailerLite | Yes. Yes, plus custom HTML and simple editors. |
| Mailchimp | Yes. Yes, and reviewers rate it highly. |
| ActiveCampaign | Yes. Yes, and a mature automation builder. |
Yes answersOut of the questions that have a yes or no for that service6 of 6 yes for Nitrosend6 of 6 yes for Brevo5 of 7 yes for Omnisend5 of 7 yes for MailerLite3 of 6 yes for Mailchimp4 of 7 yes for ActiveCampaign
At a glance
6 services, the same 7 tests, 100 points in all. In order: Nitrosend 76.5, Brevo 74, Omnisend 61.5, MailerLite 61.5, Mailchimp 59, ActiveCampaign 58.5. Nitrosend has the best score on Works from your AI assistant, Emails in your brand, no designer, Price and Receipts and newsletters on one plan. Every price and feature was read on each company's own pages on November 10, 2026.
When another platform is the better pick
Nitrosend does not win every test. Read these before you choose it.
- Pick Omnisend if you run a Shopify or WooCommerce store and want Klaviyo's shape for less. Store email and SMS share one automation, with prebuilt store workflows, and its integrations and support score 8 against Nitrosend's 5. Standard is $132 a month at 10,000 contacts. Nitrosend's website form is an embedded signup form rather than a popup builder, and storefront browsing data needs Shopify's Web Pixel set up by hand. If popups and browse flows carry your revenue, Omnisend is the better move.
- Pick Brevo if your list is large and you email it now and then. It charges on emails sent, it scores higher on free plan, 8 to 7, with 300 emails a day, and it beats Nitrosend on editor and on track record. SMS, WhatsApp and a CRM come in the same account.
- Pick ActiveCampaign if your automation runs past the storefront. Services, courses or a B2B pipeline fit its CRM and branching better than a store tool. It scores 9 on track record and 8 on the editor, though there is no free plan.
- Pick MailerLite if you have a small catalog and mostly send newsletters. Its editor scores 8 and its MCP server can build automations from the chat. It bills per subscriber, $89 a month at 10,000.
- Pick Mailchimp if you want the whole marketing suite in one dashboard. It has the most mature editor here, a 9, and 300+ integrations, with landing pages, ads and social posting next to the email.
Why people leave Klaviyo
Three things, and they compound.
The first is the bill. Klaviyo charges on active profiles, and its help center on active profiles counts "any profile that can be emailed through Klaviyo", whether you email it or not. From February 18, 2025, Klaviyo's billing FAQ required customers to be on an email plan that "matches or exceeds their active profile count", and an appreciation discount limits the increase for eligible existing accounts to 25%. On September 26, 2026 the pricing page listed the Email plan at $150 a month for 10,000 profiles, and above 150,000 profiles there is no published price. An agency running a client with 100,000 profiles who only emails 30,000 of them pays for all 100,000.
The usual fix shows the trade-off. Klaviyo's way to shrink the bill is to suppress unengaged profiles, because suppressed profiles stop counting. The same article says a suppressed profile stays "ineligible to receive any marketing emails" even if that person later starts a checkout or makes a purchase. So every cleanup that saves money also shuts off win-back email to the people you removed. When you pay for sends instead, the cleanup is only about inbox placement: you stop emailing people who have not opened or bought in a year, and keep them on file at no cost in case they come back.
The second is the figure that is supposed to justify the bill. Klaviyo's conversion tracking guide says a conversion counts after an open or a click, "or if Apple Mail Privacy Protection (MPP) automatically opens the email", unless you change the setting. Accounts created since October 9, 2024 default to a five-day window. So a person who never read the email can still be credited with the purchase. Click data is thinning too: since iOS 17, Apple's link tracking protection removes extra information from links in Mail that some sites use to track people.
The third is the AI. Klaviyo has its own MCP server, but its MCP guide for agencies, read on October 1, 2026, says an assistant can create campaigns and templates as drafts "that a human QAs", and that scheduling and sending end to end is "expected to roll out in Q3 2026". Check whether it has shipped before you decide. On Nitrosend, the MCP server takes a campaign from draft to test send to sent in the same chat, and the send waits for your yes. The Nitrosend and Klaviyo head to head goes through the two line by line.
George Hartley, Nitrosend's co-founder, ran the incumbents from his own agent before he built Nitrosend, and he sees the gap as structural rather than a missing feature. On The Breakout CEO in August 2026 he said of the big platforms he tried: "They have a massive feature set. ... And so to kind of re-engineer that whole thing to be completely agent first, like that runs from MCP ... to, to kind of rebuild that is, is kind of almost an impossible task." A month later on SaaS Stories he made the same point: "on a lot of existing tools, you know, just the amount of kind of feature bloat and the kind of legacy stuff you have to support means that they just can't reorg the whole thing to be agent first." He did not name the tools he tried, so read it as his view of the category, and check Klaviyo's MCP roll-out against it.
What each one costs in 2026
The platforms here charge in two ways. Nitrosend and Brevo charge by emails sent. Omnisend, ActiveCampaign, MailerLite and Mailchimp charge by the size of your list, the same way Klaviyo does. To compare them fairly, the table prices the same two lists on every platform: 10,000 contacts emailed twice a month, which is 20,000 emails, and 500,000 contacts emailed twice a month, which is a million.
What sending costs
List prices, USD, monthly, November 10, 2026| Service | 20,000 emails a month | 1,000,000 emails a month |
|---|---|---|
| Nitrosend (pricing page) | $20Starter, contacts unlimited | $650Scale, contacts unlimited, including overage |
| Brevo (pricing page) | $69Standard, the first plan with automation. Starter is $32 without it | $999Professional. Standard stops at 500,000 emails |
| Omnisend (pricing page) | $132Standard, paid monthly. The page opens on a 30% prepay discount | Ask salesBy quote. Published tiers stop at 150,000 contacts, $1,456 |
| MailerLite (pricing page) | $89Comfort, 10,000 subscribers | Ask salesEnterprise, by quote. Published tiers stop at 200,000, $819 on Comfort |
| Mailchimp (pricing page) | $110Essentials, flows up to 4 steps. Standard is $135 | Ask salesPremium only, by quote. Published tiers stop at 200,000 contacts |
| ActiveCampaign (pricing page) | $149Starter, billed yearly, 5 actions per automation. No monthly price is published | Ask salesBy quote. Published tiers stop at 50,000 contacts |
At 20,000 emails a month Nitrosend is $20. Brevo is $69, MailerLite $89, Mailchimp $110, Omnisend $132 and ActiveCampaign $149 billed yearly. Klaviyo itself is $150 for the same list.
At a million emails a month Nitrosend is $650 and Brevo $999. Omnisend, ActiveCampaign, MailerLite and Mailchimp publish no price at that size, and neither does Klaviyo. E-commerce email marketing covers what a store should expect to send.
The bigger difference is what the $20 buys. Contacts are unlimited on every Nitrosend plan, and order confirmations and password resets go out on the same allowance as your campaigns, through a plain send call rather than an approved flow. If most of your profiles are rarely emailed, add up what you actually send before you compare.
How we scored
Every platform gets a score out of 10 on the same seven tests. Each test is worth a set number of points, 100 in all. Working from your AI assistant and price are worth the most, 20 points each, because they decide what running email costs you in time and money. The editor and track record, where the older platforms are strongest, share 30 points, so a platform that is better there gets full credit for it.
Each test is a question with one answer per service, checked against the service's own pages on November 10, 2026. A 10 means it does the job fully on its normal plans. A 5 means it does part of it, or only on a higher plan or in a second product.
Works from your AI assistant, 20 points. Can an agent inside Claude, ChatGPT, Cursor or Codex compose a marketing campaign, test it, and send it, with no person opening the web app between the prompt and the send? An approval step the person answers in the chat counts as inside the agent. Moving into the web app to finish does not. Scored on one written rule for every vendor: a first-party server the vendor runs and that can send counts fully; a third-party wrapper (Zapier, Composio, Kanopi, community servers) counts for less; a server that only drafts or reads counts for less than one that sends.
Emails in your brand, no designer, 10 points. Does the product learn your logo, colors, fonts and voice from your own site and apply them to every email it drafts, on the plan most small teams start on?
Price, 20 points. What does email cost each month at 20,000 emails, a 10,000-contact list emailed twice, and at 1,000,000, a 500,000-contact list emailed twice? Scored on list prices in US dollars, paid monthly, at the cheapest plan that holds the contacts, covers the sends and includes automated emails such as a welcome series. Every ranking on this site uses the same fixed scale. At 20,000 emails, $20 or less scores 10, then $25 scores 9, $32 scores 8, $40 scores 7, $50 scores 6, $70 scores 5, $100 scores 4 and $140 scores 3. At 1,000,000, $500 or less scores 10, then $625, $800, $1,000, $1,250, $1,750, $2,500 and $3,500 step down the same way. Anything dearer, or a price given only by quote, scores 2. A free product scores 10. The score is the average of the two.
Free plan, 10 points. How far can a team get on the free plan before it has to pay: contacts, total sends, and the daily ceiling.
Receipts and newsletters on one plan, 10 points. Can receipts, password resets and newsletters go out from one account, on one bill, through one API?
Editor for building by hand, 15 points. For a person who wants to build the email themselves: how mature are the visual editor and the template library?
Integrations, support and track record, 15 points. How many tools does it plug into, what support comes with the plan, and how long has it been doing this at scale?
One thing is not scored: inbox placement. None of these platforms publishes a comparable deliverability number, so a score there would be a guess dressed up as a measurement.
Which Klaviyo alternative is best for a Shopify store on a tight budget?
Omnisend, in most cases. It carries the same shape of store automation, adds SMS on the same plan and is free to 250 contacts while you test it. Brevo or Nitrosend are cheaper if your list is large and you email it rarely, because both charge on emails sent rather than profiles held, but their store automation is thinner: Nitrosend has no popup builder, and its storefront browsing data needs Shopify's Web Pixel set up by hand. Whichever you pick, compare at your real profile count, not at the entry tier, because that is where the two ways of charging split apart.
Will I lose my revenue attribution if I leave Klaviyo?
You will lose the number, and you should expect the new number to be lower. By default Klaviyo counts a conversion after an open or a click, including opens that Apple Mail Privacy Protection fires on its own, so purchases get credited to emails nobody read. Accounts created since October 9, 2024 use a five-day window; check the one your account uses in its conversion settings. A platform that counts clicks only, or uses a shorter window, will report less revenue for identical sales. Before you move, switch Klaviyo to clicks only, or to opens that leave out Apple Privacy opens, and re-run your last quarter so you have a like-for-like baseline. Otherwise the drop looks like a performance problem when it is a counting change. Email marketing metrics covers which numbers still hold up.
Can I keep Klaviyo for SMS and move only email?
Yes. It takes DNS: the new sender's DKIM record alongside Klaviyo's, and both senders in the one SPF record on your sending domain. Klaviyo keeps the SMS profiles, the new platform takes the email, and you move one type of message at a time. Watch the bill, because active profiles keep counting while the account is open, so a split setup can cost more than either option alone until you prune Klaviyo down to the people you text.
How to move off Klaviyo without hurting deliverability
- Export profiles with engagement and purchase history. Engagement history is what lets you pick a safe first segment.
- Check the list. Old store profiles go stale faster than newsletter subscribers, and the email blacklist checker tells you what you are carrying.
- Authenticate the new sender. Keep both senders in one SPF record during the overlap. The email authentication guide covers the records.
- Rebuild the money flows first. Welcome and post-purchase, then abandoned cart once the new platform receives the checkout event that starts it. Everything else can wait.
- Warm up rather than cutting over in one send. How to warm up an email domain has the ramp, and run an inbox placement test before the first big campaign.
- Keep Klaviyo open and read-only for one billing cycle. That way you compare like for like before you cancel.
If Klaviyo was your step up from another tool, the same method applies on Mailchimp's alternatives, Brevo's and ActiveCampaign's.
Klaviyo alternatives FAQ
Nitrosend, with the top score in this review, 76.5 out of 100. Contacts are unlimited on every plan, it is $20 a month for 20,000 emails, and your AI assistant can write and send campaigns in your brand. Pick Omnisend if on-site popups and store workflows carry your revenue, Brevo for a large list you email rarely, ActiveCampaign for automation past the storefront, MailerLite for a small catalog and Mailchimp for the full marketing suite.
Most likely because of active-profile billing, which charges for every subscribed profile whether or not you email it. From February 18, 2025, Klaviyo's billing FAQ required plans to match the active profile count, and an appreciation discount limits the increase for eligible existing accounts to 25%. A list that grows through a busy quarter raises the bill even if your sending stays flat.
Nitrosend, which scores 9 out of 10 on working from your AI assistant. Its official MCP server lets Claude, ChatGPT, Cursor or Codex build a campaign and send it, and campaigns and flows stay drafts until approved. MailerLite, Omnisend and ActiveCampaign are next at 8: MailerLite's MCP server can create and schedule campaigns and draft automations, Omnisend's can send a campaign and switch on an automation, and ActiveCampaign's sends a prepared campaign once you approve its summary in the chat. Brevo scores 7. Mailchimp scores 5, because Mailchimp's own Claude guide has you move into your Mailchimp account "to finalize and send".
Yes, with different caps. Omnisend is free to 250 contacts and 500 emails a month. MailerLite is free to 250 subscribers and 2,500 emails. Brevo allows 300 emails a day. Mailchimp is free to 250 contacts and 500 emails. Nitrosend gives 5,000 emails to start, then 500 a month, with unlimited contacts and full API, MCP and CLI access on the free plan.
Partly, and you should know the gaps before you try. Campaigns, flows, segments, transactional sending and unlimited contacts sit in one account, run by your AI assistant if you want. What is missing is a popup builder, and storefront browsing data needs Shopify's Web Pixel set up by hand, while both are built into Klaviyo. If popups and browse flows carry your revenue, Omnisend is the better move.
Not as a file, but you do not have to rebuild them from memory. Klaviyo's Flows API returns a flow's full definition: its one trigger, the profile filter, and every action, such as time delays, emails and conditional splits. Export the definitions of the two or three flows that earn money, give them to your AI assistant, and it can rebuild each step as a Nitrosend flow and send you a test before anything goes live. Check the trigger first. Nitrosend's Shopify connector listens for orders, payments, refunds, products and customers, and browsing activity needs Shopify's Web Pixel, so a flow that starts on a Klaviyo checkout or browsing event needs a matching event source before it can fire. Keep the old account open and read-only for a cycle, and compare the numbers on the same attribution setting before you decide the move worked.
Add Nitrosend's MCP server, api.nitrosend.com/mcp, in Claude, ChatGPT, Cursor or Codex and sign in. Nitrosend's MCP guide lists what the assistant can then do: set up your Brand Kit with your colors, fonts, logo and voice, import and segment contacts, draft campaigns, build flows and read the results. Ask for the email in plain words. A campaign or flow stays a draft until you approve it, and the assistant can send you a test first. If you connect Shopify, customers who agreed to marketing in your store come in subscribed and everyone else comes in unsubscribed, so the assistant only emails people who said yes.
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