Nitrosend vs Emailchaser.

Campaigns, flows, and transactional in one platform, unlimited contacts, agent-driven.

TL;DR

Emailchaser is cold email software. It finds leads on LinkedIn Sales Navigator, double-verifies their addresses, and sends sequences from the Google Workspace or Microsoft 365 mailboxes you connect, rotating across them and ramping each new one up. Email accounts and team seats are unlimited at every rung, starting at $23 a month. If your job is cold outbound, it does that job, and this page isn't going to argue otherwise.

Nitrosend is an AI-native email platform, built for the email that starts once a prospect answers. Every capability is an email API endpoint and an MCP tool before it's a screen, and that covers campaigns, flows, segments, and transactional sends, with unlimited contacts on every plan including Free. Where it runs out is the outbound itself. A team whose whole email program is cold sequencing wants Emailchaser, and plenty of teams end up running both: Emailchaser to get the reply, Nitrosend for every send after it. Teams shopping the lifecycle side too usually read the EmailOctopus comparison, the Emarsys one, and the Encharge one beside this, and the full comparison index holds the rest.

Pricing math

What you actually pay.

The two ladders meter different things. Emailchaser bills on emails sent, active contacts held, and lead credits used, with all three stepping together at each rung, while mailboxes and seats sit outside the meter entirely. Nitrosend bills on emails, and contacts are unlimited. Both columns are monthly in USD, before Emailchaser's 20% annual discount.

Scenario	Nitrosend	Emailchaser
Getting started	Free: 8,000 emails to start, then 500/mo forever. Unlimited contacts, full MCP, API, and CLI	7-day free trial on every plan. Three paid rungs and no permanently free plan
Entry paid rung	$20 Pro: 20,000 emails, unlimited contacts, 3 seats, BYO sending and AI keys	$23 Starter: 5,000 emails, 1,000 active contacts, 1,500 lead credits, unlimited mailboxes and seats
125,000 emails/mo	$100 Ultra: 125,000 emails, unlimited contacts, 5 brands, 10 seats	$47 Pro: 125,000 emails, 25,000 active contacts, 5,000 lead credits, unlimited mailboxes and seats
500,000 emails/mo	$300 Enterprise: 500K to 4M+ emails at a published price, with SSO and SAML	$179 Max: 500,000 emails, 100,000 active contacts, 10,000 lead credits, private Slack support

Prices accurate as of August 2026. Check vendor sites for current rates.

Migration

How to switch (or run both).

Nothing here is a cutover. Emailchaser keeps running the outbound while Nitrosend takes the email that starts after a reply, and for most teams that overlap is permanent.

Add and verify your sending domain in Nitrosend. DKIM and SPF records sit alongside whatever authentication your outbound mailboxes already use, so both can send from the same domain through the overlap.
Leave the cold outbound exactly where it is. Emailchaser keeps the sequences, the inbox rotation, the ramp-up, and the Master Inbox, and for most teams that half of the program never moves at all.
Move the prospects who replied. Import them with nitro_import_contacts, where email, first and last name, and custom properties map across. Emailchaser's API and webhooks are on every plan, so the export is programmatic at any rung.
Build the sequence that starts after the reply as a flow with nitro_compose_flow: onboarding, nurture, product notifications, and the transactional mail that goes with them. It usually doesn't exist yet as one object, because that isn't what a cold outbound tool is for.
Decide what carries the sending. BYO sending keys on Pro and above route mail through Amazon SES, Resend, Postmark, Mailgun, or SendGrid on a domain you already warmed, which is what makes the decision reversible. Your outbound mailboxes stay yours and stay where they are.

Honest credit

What Emailchaser does well.

Picking a tool is about fit. Here's what Emailchaser is genuinely good at.

Unlimited connected email accounts on every plan, including the $23 entry rung, which is the product's whole pitch.
Unlimited team seats on every plan, so the size of the team never moves the bill.
A first-party MCP server that lets Claude Code, Cursor, or any compatible client run campaigns, leads, sender accounts, and webhooks in plain English.
API access and webhooks on every plan rather than starting partway up the ladder.
Double email verification through two independent providers before a send, which is a real answer to bounce rates.
Warm-up is optional and off by default, switched on per mailbox, which is a deliberate deliverability stance rather than a missing feature.
Automatic ramp-up raises a new mailbox's daily volume gradually.
Inbox rotation spreads a campaign across every connected account.
Lead Finder pulls prospects with verified emails straight from LinkedIn Sales Navigator, so a campaign doesn't need a list built somewhere else first.
Domains and configured Google Workspace mailboxes can be bought inside the product and delivered in 24 to 48 hours, which removes the DNS setup step.
A Master Inbox and a built-in sales CRM collect replies from every connected account in one place.
A/B testing across up to 26 subject and body variants per step, with AI spintax varying the copy so repeated sends don't look identical.

What Nitrosend adds

Where we think we're better.

Campaigns, flows, segments, and transactional sends in one platform, for the email that starts once a prospect has answered.
Unlimited contacts on every plan, including Free, so a list that grows without being mailed never moves the bill.
MCP-first is an architecture, not an integration: every capability is an API endpoint and an MCP tool before it's a screen.
The MCP reaches campaigns, flows, contacts, templates, and segments, which is the whole platform rather than a read-only slice of it.
Deliverability, billing, tests, and approvals are tools too, and they're the four that usually stop an automation dead.
Deliverability sits in the same MCP surface as the sending, so it answers to the same agent.
Transactional sends deliberately stay on REST and the SDK, because a send that has to be fast shouldn't wait on a tool call.
A clean REST API sits alongside the MCP, so nobody is forced through an agent to get work done.
Contact enrichment and verification status live on the contact record, so a list gets cleaned where it lives.
BYO sending keys on Pro and above route mail through Amazon SES, Resend, Postmark, Mailgun, or SendGrid, on a domain you already warmed.

Use case fit

When to pick which.

Pick Emailchaser if

Your email goes to people who have never heard of you. You want the leads found on LinkedIn Sales Navigator and double-verified in the same tool that sends them, sequences rotating across mailboxes you connect, and ramp-up behind every new one. You're adding mailboxes and teammates constantly and don't want either to move the price, or you run outbound for clients across separate workspaces. None of those is a close call.

Pick Nitrosend if

Your email goes to people who already know you, and you want campaigns, flows, and transactional sends in one place. You want the whole platform drivable by the agent you already run, down to deliverability, billing, and approvals. You're tired of a contact count moving your bill, or you want the transport to stay yours while the platform above it changes. The sharpest case is a team already running outbound somewhere with nowhere sensible for everything after the reply.

Emailchaser vs Nitrosend - common questions.

Can Nitrosend replace Emailchaser for cold outreach?

No. Nitrosend is sender-side: it doesn't connect your mailboxes, rotate sends across them, find or verify leads, or watch for replies, and cold outbound needs all four. What it does replace is everything after the reply, which is where onboarding, nurture, product notifications, and transactional mail live. Plenty of teams run the two side by side.

What does Emailchaser actually cost?

Three paid rungs, billed monthly. Starter is $23 for 5,000 emails a month and 1,000 active contacts, Pro is $47 for 125,000 emails and 25,000 active contacts, and Max is $179 for 500,000 emails and 100,000 active contacts. Email accounts and team seats are unlimited at every rung, and annual billing takes 20% off. Lead credits are metered separately.

Does Emailchaser or Nitrosend have a free plan?

Nitrosend has one. The Free plan sends 8,000 emails to start and 500 a month after that, with unlimited contacts and the full MCP, API, and CLI. Emailchaser runs a 7-day free trial on every plan rather than a free tier, so trying it means picking a rung first and cancelling if it isn't the fit.

Can I run either one through an AI agent?

Yes, both. Emailchaser ships a real MCP server, and an agent can launch or pause a campaign through it without anyone opening a dashboard. The difference is build order rather than the length of the object list. Bolt an agent onto a product designed for people clicking buttons and it reaches whatever somebody chose to expose, which on a cold outreach tool is the outbound. Nitrosend was built the other way around: every capability is an API endpoint and an MCP tool before it's a screen, so the agent gets the platform rather than a slice of it, including deliverability, billing, and approvals.

Start with the free tier.

8,000 emails to start, then 500 a month, unlimited contacts, full MCP, API and CLI access. No credit card.