Nitrosend vs Mail Blaze.

Priced on sends, unlimited contacts, agent-native throughout, and your own transport.

TL;DR

Mail Blaze is a Cape Town email marketing platform that has been running since 2006, and it sells on human support and rand pricing. Every feature is on every plan, there's a person on the phone at any package size, and campaigns and transactional email share one bill. The price is banded on the size of your list, with a send allowance attached to each band. If that's the shape of your program, it's a straightforward buy.

Nitrosend is an AI-native email platform priced on sends, with contacts unlimited on every plan including Free. The difference is what an agent can reach: one command runs the whole stack, flows included, and BYO sending keys on Pro and above keep the transport where you want it. A workflow that only exists as a screen is one no agent can drive, whoever publishes a REST endpoint beside it. Mail Blaze's API reaches contacts, campaigns, templates, transactional sends, and reporting. The automations sit outside it.

Both products keep campaigns and transactional email on one bill, and ours exposes the whole of it through a single email API rather than an endpoint per object.

Pricing math

What you actually pay.

The two products aren't priced on the same thing. Mail Blaze bands its price on contacts held, with a send allowance of twelve times each band's ceiling, and we price on sends with contacts unlimited. So every row below names both a list size and a monthly volume, and you want the row closest to both.

Scenario	Nitrosend	Mail Blaze
Free tier	8,000 emails to start, then 500/mo forever. Unlimited contacts, full MCP, API, and CLI, no card	No free plan. A 14-day trial: 1,000 emails to a list of up to 500 subscribers
5,000 contacts, ~20,000 emails/mo	$20 Pro: 20,000 emails, 3 seats, BYO sending and AI keys	$43/mo on the 2,801 to 5,000 band, with 60,000 sends included
10,000 contacts, ~100,000 emails/mo	$100 Ultra: 125,000 emails, 5 brands, 10 seats	$63/mo on the 5,801 to 10,000 band, with 120,000 sends included
100,000 contacts, ~1M emails/mo	$300 Enterprise: 500K to 4M+ emails at a published price, with SSO and SAML	$397/mo on the 90,001 to 100,000 band, with 1,200,000 sends included

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

Migration

How to switch (or run both).

Mail Blaze keeps sending while you move, there's no lock-in contract, and the one thing that can be stranded is unused pay-as-you-go credit, which expires twelve months from purchase.

Add and verify your sending domain in Nitrosend. The DKIM and SPF records sit alongside Mail Blaze's, so both platforms send from the same domain for as long as the overlap lasts.
Export your lists and subscribers. Mail Blaze's API exposes lists, segments, and subscriber CRUD, so the export is a read rather than a support ticket. Import with nitro_import_contacts, and custom fields land on custom fields.
Move one low-stakes message type first. A receipt or a password reset through nitro_send_message, watched for a week before a campaign follows it.
Rebuild your automations as flows with nitro_compose_flow. This step is a read-and-rebuild rather than an export: Mail Blaze automations are built in the dashboard and have no documented API surface, so there's nothing to pull out and no file to hand over. Budget real time for it, screenshot every branch before you cancel, and rebuild the two or three flows that carry revenue before you touch the rest.
Decide what carries your reputation. BYO sending keys on Pro and above route mail through Amazon SES, Resend, Postmark, Mailgun, or SendGrid, and Mail Blaze's own pool isn't one of them. What travels with you is the domain and its authentication history.

Honest credit

What Mail Blaze does well.

Here's what Mail Blaze is genuinely good at.

Nothing is gated by tier: templates, automations, AI blocks, and support are all on every plan from day one, and on the trial too.
Human support at every package size, by phone, live chat, email, or Zoom, rather than a ticket queue somebody works through on Monday.
Support runs seven days a week, which is unusual anywhere near the bottom of a price ladder.
Campaigns and transactional email share one platform and one send allowance, so a small sender doesn't need a second vendor for receipts.
AI content tooling in the builder on every plan: an AI text block, an AI image block, and a spam score checker.
A REST API covering lists, subscribers, segments, templates, campaigns, transactional sends, and reporting, with an interactive request explorer to try it in.
Granular reporting through that API: campaign summaries, opens, clicks, bounces, and subscriber activity timelines, with export.
Rand billing and a Cape Town team that has worked one market since 2006, which is a real advantage for a South African sender.
Pay-as-you-go credits, valid for twelve months and carrying full access to the platform, for a sender who campaigns a few times a year.

What Nitrosend adds

Where we think we're better.

Unlimited contacts on every plan, including Free, so a list that grows without being mailed never moves the bill.
Mail Blaze bands its price on contacts held, so the bill moves when the list moves rather than when the sending does.
A free tier a sender can stay on: 8,000 emails to start, then 500 a month, forever, with no card.
MCP-first is an architecture, not an integration: every capability is an API endpoint and an MCP tool before it's a screen.
Automations sit outside Mail Blaze's documented API, so a flow gets built and changed in the dashboard rather than through the API.
BYO sending keys on Pro and above route your mail through Amazon SES, Resend, Postmark, Mailgun, or SendGrid, on the domain and IP you already warmed.
A published price from 500,000 to over 4,000,000 emails a month, where Mail Blaze's ladder ends at 250,000 contacts and turns into a demo booking.

Use case fit

When to pick which.

Pick Mail Blaze if

You want to be billed in rands by a team in your own time zone, and you'd rather have a person on the phone seven days a week than a ticket number. The pricing suits a small list that sends heavily, because a band covering 5,000 contacts carries 60,000 sends with it. It also suits an automation you build once and leave alone, or a handful of campaigns a year on pay-as-you-go credits.

Pick Nitrosend if

Your list is much larger than your send volume and you're tired of paying for addresses you don't mail. You want the platform to answer to an agent end to end, flows included, rather than up to the point the dashboard takes over. You want your own transport underneath a platform that can change, because BYO sending keys on Pro and above make the move reversible.

Where else to look

Teams weighing contact-banded pricing usually read the Mailchimp comparison and the Mailercloud writeup beside this one, and the MailerLite subscriber-priced breakdown if a built-in site builder is part of the requirement. The full provider comparison index lists the rest.

Mail Blaze vs Nitrosend - common questions.

Can Nitrosend replace Mail Blaze?

For the email program, yes. Campaigns, flows, segments, templates, contacts, and transactional sending are all here, and transactional isn't a separate product with a separate bill. What we don't replace is the local half: rand billing and a Cape Town support desk that answers the phone at any package size. If those are the reasons you bought Mail Blaze, they're real reasons to stay.

Is Nitrosend cheaper than Mail Blaze?

It depends which end of the ladder you're on, because the two are priced on different things: Mail Blaze bands on contacts held, and we price on sends with contacts unlimited. At 5,000 contacts it's $20 against $43. At 10,000 contacts and heavy sending it's $100 against $63, a rung Mail Blaze wins. At 100,000 contacts it's $300 against $397.

Does Mail Blaze have an API I can drive from an agent?

Mail Blaze publishes a REST API, authenticated with a public key in a header, covering lists, subscribers, segments, templates, campaigns, transactional sends, and reporting, with an interactive request explorer. Automations aren't in it, so the workflows that decide when mail goes out stay in the dashboard. Nitrosend's MCP surface reaches the automation layer too, so an agent can build and change a flow rather than hand it back to a dashboard.

Can I keep sending through Mail Blaze while I move?

On the domain, yes. Both platforms can authenticate against the same sending domain, so you can move one message type at a time and leave the rest where they are. On the transport, no. BYO sending keys cover Amazon SES, Resend, Postmark, Mailgun, and SendGrid, and Mail Blaze's own pool isn't one of them, so the pool you leave is a pool you stop using.

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.