Unitpost vs MailerSend

MailerSend is a transactional email, SMS and WhatsApp service from the team behind MailerLite, with newsletters left to MailerLite. Unitpost covers transactional and marketing email in one product with unlimited contacts on paid plans and a free tier of 5,000 emails a month. Across 8 compared capabilities, Unitpost leads on 4 and MailerSend leads on 1.

Comparing more than two? Best MailerSend alternatives in 2026, ranked with published weights.

Which should you choose?

Choose MailerSend if

You want US and Canada SMS or WhatsApp next to transactional email
Non-developers will build templates in a visual builder
Your volume fits the $7 Hobby plan

Choose Unitpost if

You want a free plan with more than 500 emails and no card
You want campaigns and transactional email in one product, not two
You want idempotency keys on every send
You want logs for longer than one day on the entry plans

What MailerSend does well

Stated plainly, because a comparison that pretends otherwise is not worth reading.

A cheap first paid plan: $7 a month for 5,000 emails
A hosted MCP server with OAuth on every plan
Inbound routing on every plan, free included
SMS in the US and Canada, and WhatsApp as an add-on
Drag-and-drop, HTML and rich-text template builders

Pricing and free tier

Unitpost: 5,000 emails/month, 200/day, no credit card; On paid plans your monthly price is a sending allowance you spend at your tier's rate, and it refreshes every month. Marketing and unlimited contacts are included rather than billed as add-ons.
MailerSend: 500 emails a month, one domain, one template and 100 API requests a day; a card is required; Priced by monthly email volume: Hobby is $7 a month for 5,000 emails, Starter $35 for 50,000.

MailerSend pricing and free-tier details last verified 2026-11. Providers change these often — check their pricing page before making a decision.

Feature comparison

Feature and pricing comparison between Unitpost and MailerSend
Capability	Unitpost	MailerSend
Free plan	5,000 emails/month, 200/day, no credit card	500 emails a month and 100 API requests a day, card required
Marketing email	Campaigns, segments and topics in the same product	A bulk send endpoint; newsletters go to MailerLite, a separate product
Idempotency keys on send	Idempotency-Key on sends, 24-hour dedupe window	Not in the email API
Activity retention	7 days on the free plan, 60 days on paid plans	1 day on Free and Hobby, 7 on Starter, 30 on Professional; an add-on extends it
SMS	On paid plans, in every country we offer	On Starter and above, US and Canada only
Inbound email	Receiving with a read API for messages and attachments	Inbound routing on every plan, forwarded as JSON or to an address
MCP server	Hosted, OAuth, every send through the sending gate	Hosted, OAuth, on every plan
Entry paid plan	$10 a month for 20,000 emails	$7 a month for 5,000 emails

How do I switch from MailerSend?

There is no one-key importer for MailerSend: export your contacts and suppressions, import them, verify your sending domain, and move one kind of mail at a time.

Read the docs

Frequently asked questions

Is Unitpost a MailerSend alternative?

Yes, for apps that want transactional and marketing email in one product, idempotent sends and a free plan without a card. MailerSend is a good fit for a small project on its $7 plan, or for US and Canada SMS and WhatsApp next to email.

Does MailerSend send newsletters?

It has a bulk send endpoint, but MailerSend recommends MailerLite, its sister product, for newsletters and campaigns. Unitpost sends both from one account and one contact list.

Switching from MailerSend?

Try it on the free tier first

5,000 emails a month free. Verify a domain, send a test, preview the migration.

Start for free Explore the docs