Nitrosend is the better choice than MailerLite on five of the seven things this review compares: running email from an AI agent, on-brand design without a designer, cost as the list grows, how far the free plan goes, and sending transactional and marketing email on one plan. MailerLite is a well-made, affordable newsletter tool that a person runs from a web app and pays for by the subscriber, and its MCP server is one of the better ones among dashboard tools. Nitrosend is built so an agent inside Claude, ChatGPT, Cursor or Codex does the whole job, and it bills by the emails sent, so 10,000 subscribers cost $20 a month rather than $89. To run it from an assistant, add Nitrosend's MCP server, api.nitrosend.com/mcp, as a connector and sign in with OAuth; the Nitrosend MCP docs list every tool.
Nitrosend vs MailerLite, compared
The quick version: eight yes-or-no questions a team usually asks when choosing between the two. A tick means the product does it as described on its own pages today. A dash means the honest answer is not a yes or a no.
Nitrosend and MailerLite, side by side
Checked September 25, 2026| Question | Nitrosend | MailerLite |
|---|---|---|
| Send a campaign from the chatCan an agent send a marketing campaign without anyone opening the web app? | Yes. Yes, through the MCP server. Campaigns stay drafts until approved. | Yes. Yes. Its MCP server can create and schedule campaigns. |
| Build automations from the chatCan an agent create a new automated flow? | Yes. Yes. The agent builds flows through the MCP server. | Yes. Yes. Its MCP server has create_automation. |
| Brand voice learned from your siteDoes it learn your tone of voice as well as your colors and fonts? | Yes. Yes. Brand Kit captures voice and AI Memory keeps house style. | No. No. Brand styles pull logo, colors, fonts and links. |
| Rarely emailed contacts are freeCan you keep contacts you rarely email without paying for them? | Yes. Yes. The bill follows emails sent. | No. No. The plan is set by subscriber count. |
| Transactional includedAre receipts and resets in the same plan as newsletters? | Yes. Yes, on every plan including Free. | No. No. Transactional is MailerSend, a separate product. |
| Free past 250 contactsCan the free plan hold more than 250 contacts? | Yes. Yes. Unlimited contacts on Free. | No. No. Free stops at 250 subscribers. |
| Free plan past 500 emails a monthDoes the free plan keep sending more than 500 emails a month? | Not a yes or no. 8,000 emails to start, then 500 a month. | Yes. Yes, 2,500 a month. |
| Mature drag-and-drop editorIs there a polished visual editor for a person building by hand? | Not a yes or no. A block builder exists. The agent is the main way in. | Yes. Yes, plus custom HTML and simple editors. |
Nitrosend meets 6 of 6 yes-or-no questions on this page, MailerLite 4 of 8. Rows marked with a dash are not a yes or no question for that product.
How the two score
Seven tests, 100 points in all. Each product gets a score out of 10 on each one, and the total adds each score times the points for that test. MailerLite scores well on running email from an agent, one point behind Nitrosend, because its MCP server can create and schedule campaigns and build automations.
The plan matters more than the tool list. MailerLite's pricing FAQ says that "On Free, API and MCP access is limited and doesn't include sending", and it labels Power, the dearer self-serve plan, the one for "frequent senders, teams and AI agents". On Nitrosend, MCP access comes with every plan, Free included, and the agent's campaigns and flows stay drafts until they are approved.
Each test, scored
Points out of 100, scores out of 10, September 25, 2026| What we compared | Points | Nitrosend | MailerLite |
|---|---|---|---|
| Run from an AI agent | 20 | 9 out of 10 | 8 out of 10 |
| On-brand design, no designer | 10 | 9 out of 10 | 7 out of 10 |
| Cost as the list grows | 20 | 9 out of 10 | 5 out of 10 |
| Free plan headroom | 10 | 7 out of 10 | 5 out of 10 |
| Transactional and marketing, one plan | 10 | 9 out of 10 | 5 out of 10 |
| Hands-on editor and templates | 15 | 6 out of 10 | 8 out of 10 |
| Integrations, support, track record | 15 | 5 out of 10 | 7 out of 10 |
| Total score | 100 | 77.5 out of 100 | 65.5 out of 100 |
Where each one runs out
Rank 1Nitrosend
77.5 out of 100Total
- Priced by
- Emails sent
- Free plan
- 8,000 emails, then 500 a month
- Entry plan
- $20 a month, 20,000 emails
- Run from an AI agent9 out of 10Official MCP server runs campaigns, flows and sends from the chat; campaigns and flows stay drafts until approved (MCP registry).
- On-brand design, no designer9 out of 10Brand Kit scans the site for colors, fonts and voice, and applies them to every draft on every plan (docs).
- Cost as the list grows9 out of 10Unlimited contacts on every plan. $20 a month for 20,000 emails, $100 for 125,000 (pricing).
- Free plan headroom7 out of 108,000 emails to start, then 500 a month, unlimited contacts. New accounts start at 100 recipients per rolling 24 hours (pricing).
- Transactional and marketing, one plan9 out of 10Transactional and marketing email share one allowance and one API on every plan, Free included (pricing).
- Hands-on editor and templates6 out of 10A block builder exists for editing by hand, but it is plainer, because the agent is the main way in.
- Integrations, support, 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: 8,000 emails to start, then 500 a month. No credit card.
Start free
Rank 2MailerLite
65.5 out of 100Total
- Priced by
- Subscribers
- Free plan
- 250 subscribers, 2,500 emails a month
- Entry plan
- $12 a month, 500 subscribers
- Run from an AI agent8 out of 10Official MCP server with
create_campaign,schedule_campaignandcreate_automationtools (MailerLite help). - On-brand design, no designer7 out of 10Brand styles pull logo, colors, fonts and links from your site's URL, but not voice (MailerLite help).
- Cost as the list grows5 out of 10Priced by subscribers. Comfort is $89 a month at 10,000, $319 at 50,000, $439 at 100,000 (pricing).
- Free plan headroom5 out of 10250 subscribers and 2,500 emails a month, with 3 automations and community support (pricing).
- Transactional and marketing, one plan5 out of 10Transactional email is MailerSend, a separate product the pricing table links out to (pricing).
- Hands-on editor and templates8 out of 10Three editors on every plan, drag-and-drop included, and 4.6 of 5 across 1,113 reviews (G2).
- Integrations, support, track record7 out of 10100+ integrations, sites and landing pages built in, and 24/7 live chat on Power (pricing).
The verdict in short
MailerLite is only better on two: the hands-on editor, because it ships three editors on every plan and reviewers on G2 rate it highly, and integrations and extras, because 100+ integrations, websites and landing pages come in the same account.
MailerLite's three editors are well reviewed, and they are built for a person. George Hartley, Nitrosend's co-founder, has a view on it. On SaaS Stories in September 2026 he said that in most existing tools "you might have a bit of connection in from your agent you know via an mcp or something but you know at best you can kind of prompt a little bit maybe optimize a few things here and there". In the same interview he said running marketing from an agent "is 10 times faster and like 10 times less painful", and that email lagged: "email isn't there". He did not name the tools. Run your real campaign from your assistant in each before you choose.
At a glance
Nitrosend and MailerLite are scored here on the same 7 tests, 100 points in all: Nitrosend 77.5 out of 100, MailerLite 65.5 out of 100. Nitrosend takes its best score on Run from an AI agent and On-brand design, no designer and Cost as the list grows and Transactional and marketing, one plan (9 out of 10) and its lowest on Integrations, support, track record (5 out of 10). MailerLite takes its best score on Run from an AI agent and Hands-on editor and templates (8 out of 10) and its lowest on Transactional and marketing, one plan (5 out of 10). MailerLite scores higher on Hands-on editor and templates and Integrations, support, track record. Scores are unadjusted, and every MailerLite figure was read on its own site on September 25, 2026.
How we scored
Each test is a question with one answer per product, checked against that product's own pages and independent review sites on September 25, 2026. A 10 means the product does the job fully on its standard plans. A 5 means it does part of it, or does it only on a higher plan or in a second product. MailerLite prices are monthly list prices in US dollars, not the 10% lower yearly rate.
Run from an AI agent, 20 of 100. 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 given without leaving the assistant 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.
On-brand design, no designer, 10 of 100. 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?
Cost as the list grows, 20 of 100. What does the bill do when the list grows but the number of emails you send does not? Scored on published list prices, before any promotional discount.
Free plan headroom, 10 of 100. How far can a team get on the free plan before it has to pay: contacts, total sends, and the daily ceiling.
Transactional and marketing, one plan, 10 of 100. Can receipts, password resets and newsletters go out from one account, on one bill, through one API?
Hands-on editor and templates, 15 of 100. For a person who wants to build the email themselves: how mature are the visual editor and the template library?
Integrations, support, track record, 15 of 100. How many tools does it plug into, what support comes with the plan, and how long has it been doing this at scale?
What each one costs in 2026
MailerLite prices by subscriber count. At monthly list prices Comfort is $89 at 10,000 subscribers, $319 at 50,000 and $439 at 100,000, and Power costs $40 to $70 more. Comfort allows ten times the top of the subscriber tier in emails each month, and Power is unlimited under a fair use policy. That is cheaper than most contact-priced tools. It still grows with the list rather than with the sending.
Nitrosend does not charge for contacts at all, and overage is priced per email rather than by jumping a tier. On Pro, a month of 23,000 emails costs $25.70: the $20 plan plus 3,000 extra emails at $0.19 per 100, against $100 for the next plan up. The Nitrosend pricing page has the rates, and what email marketing actually costs compares the two models in detail.
The table prices MailerLite on Comfort, its cheapest paid plan, because Comfort includes automations, as Nitrosend's $20 plan does. Power is shown next to it for unlimited sending. Here is what that looks like for a list that sends two campaigns a month.
What each one costs
List prices, USD, September 25, 2026| Scenario | Nitrosend | MailerLite |
|---|---|---|
| 10,000 contacts, two campaigns a month (20,000 emails) | Pro, $20 a month (20,000 emails) | Comfort $89 a month, Power $129 |
| 50,000 contacts, two campaigns a month (100,000 emails) | Ultra, $100 a month (125,000 emails) | Comfort $319 a month, Power $389 |
| 100,000 contacts, two campaigns a month (200,000 emails) | Ultra plus 75,000 extra emails at $0.15 per 100, $212.50 a month | Comfort $439 a month, Power $489 |
| Add transactional email | Counted in the same allowance | A separate MailerSend account and plan |
Subscriber pricing behaves differently once an agent runs the list. MailerLite's pricing FAQ says a paid account that goes over its subscriber limit is moved up a tier and charged for it automatically, that any address active at any point in the billing cycle counts even if it is deleted later, and that a free account past 250 active subscribers has its campaigns and automations locked. MailerLite's MCP server includes import_subscribers_to_group, so an assistant asked to import a list can raise the bill on its own, and cleaning the list afterwards saves nothing until the next billing date. On Nitrosend, contacts are unlimited on every plan, an import never starts paid list validation, and validation itself starts from a dry-run quote that the agent must pass back, so the MCP tool refuses a validation run whose audience or price has changed since the quote.
A new Nitrosend account starts on a lower rolling 24-hour recipient limit that rises as it earns sending standing, so a large list does not all go out on day one.
Where MailerLite is the better pick
MailerLite takes two of the seven tests outright.
- The editors. Drag-and-drop, custom HTML and a simple editor, all on every plan, Free included. Its 1,113 reviews on G2 average 4.6 out of 5.
- The extras. 100+ integrations including Shopify, WooCommerce and Stripe, plus websites, landing pages, digital products and bookings in the same account. Nitrosend has five data integrations and five sending providers, and it is a small team.
MailerLite also has one of the stronger agent stories among dashboard tools. Its MCP server connects from the ChatGPT and Claude connector lists, and its tools include creating and scheduling campaigns and creating automations. The difference is what the agent has to work with. MailerLite's brand styles hold a logo, colors, fonts and links, while Nitrosend's Brand Kit also holds the brand's voice, read from the site at setup, and AI Memory keeps house style the agent reads before every draft. The AI email marketing guide shows what that workflow looks like.
Moving from MailerLite to Nitrosend
There is no MailerLite connector in Nitrosend, so a move runs through an export and the agent.
- Time it to the billing date. MailerLite's pricing FAQ says a downgrade waits for the current monthly or annual cycle to end, and a switch from annual to monthly waits until the annual plan expires, so a move lands best just before renewal.
- Subscribers. Export subscribers from MailerLite as CSV, with groups and fields, and import them in Contacts or through the imports API. Leave unsubscribed, bounced and junk subscribers out of the import file and add them as suppressions, because a Nitrosend CSV import subscribes the new contacts it creates.
- Automations. Describe each MailerLite automation to the agent and it rebuilds it as a flow. Flows stay drafts until approved, so check each one before it goes live.
- Sending. Verify the domain and ramp up. Google's sender guidelines say to "Increase sending volume slowly to avoid delivery problems", and the domain warm-up guide covers the steps.
- Transactional. If MailerSend sends the app's receipts today, they can move to the Nitrosend API on the same plan as the newsletter, with transactional and marketing kept on separate streams. The transactional email section explains the setup.
- Run both. Keep MailerLite's website and landing pages if you use them. Only the email has to move.
Which one to pick
Pick MailerLite if the person sending wants to build each newsletter by hand in a choice of editors, the business also needs a simple website or landing pages in the same tool, or the list stays under 250 subscribers and the free plan's 2,500 monthly emails are enough.
Pick Nitrosend if an agent should write, design and send the email from the assistant the team already uses, the brand's voice matters as much as its colors, the list is large relative to how often it is emailed, or receipts and newsletters belong on one plan and one API. The Nitrosend MCP server and the ChatGPT app are the two ways most teams start.
Nitrosend vs MailerLite FAQ
Yes, once the list is past a few hundred subscribers. MailerLite Comfort is $89 a month at 10,000 subscribers and $319 at 50,000, at monthly list prices. Nitrosend charges by emails sent: $20 a month for 20,000 and $100 for 125,000.
Yes. MailerLite's official MCP server connects to Claude and ChatGPT, and its tools include creating, scheduling and canceling campaigns and creating automations. Its pricing FAQ says MCP access on the Free plan is limited and does not include sending.
Add Nitrosend's MCP server, api.nitrosend.com/mcp, as a custom connector in Claude and sign in with OAuth. Point Brand Kit at your website, import your MailerLite CSV, then ask Claude for the email. It drafts the campaign, can send you a real test, and sends to the list only once the campaign is approved. The same steps work in ChatGPT, Cursor and Codex, and the Nitrosend MCP docs list each tool.
Not from MailerLite itself. Its pricing table points to MailerSend, a separate product with its own plans, for transactional email. Nitrosend sends transactional and marketing email from one plan.
It sends more each month, 2,500 emails against 500 after Nitrosend's first 8,000, but it stops at 250 subscribers, and past that limit campaigns and automations are locked until the account upgrades or removes subscribers. Nitrosend's Free plan has unlimited contacts and the full MCP, API and CLI.
Yes. Export them as CSV with their groups and fields and import them in Contacts, or have the agent run the import through the API.
Sending reputation belongs to the domain and does not move with the list. Verify the domain, send to the most engaged contacts first, and let the daily limit ramp. This review does not score deliverability, because neither product publishes a comparable inbox-placement number.