Maileroo vs Postmark (2026): which should you pick?

Pick Maileroo if

• Fits if you want to send and receive mail through one account
• Works for developers who want test inboxes next to their sending

Look elsewhere if

• Skip it if you need a dedicated IP below $72 a month, as lower plans use shared IPs
• Tight if you stay free, with inbound capped at 1,000 and test emails at 100 a month
• Watch out: prices on the page are monthly and no yearly option is shown
• Watch out: Maileroo Verify is separate, at $0.03 per successful check plus the channel fee

Pick Postmark if

• Fits if you want password resets kept on a separate stream from your newsletters
• Works for apps that need to look back at exactly what an email said weeks later

Look elsewhere if

• Pricey if you send 50,000 emails a month, at $55 with no yearly discount
• Skip it if you want a free plan to run a small app on, as it's 100 emails a month with no tier until 10,000
• Tight if you're on Basic, with 4 users, 5 sending domains and no inbound email
• Not for you if you want a dedicated IP below 300,000 emails a month, and each one is $50 a month on Pro or higher
• Watch out: DMARC reports are an add-on from $14 a month per domain

Maileroo

• A dedicated IP starts at the Pro plan ($72 a month); lower plans send from shared IPs.
• Prices on the page are monthly; no yearly billing option is shown.
• The free plan caps inbound email at 1,000 a month and test emails at 100.
• Maileroo Verify, a separate one-time-code service, costs $0.03 per successful verification plus the channel fee, billed from a prepaid balance.

Postmark

• There is no tier between the free 100 emails a month and the 10,000-email paid plans.
• Billing is monthly only; the FAQ says annual plans are not offered yet.
• Basic has no inbound email processing and caps users at 4 and sending domains at 5.
• Dedicated IPs start at $50 a month per IP, need Pro or higher and 300,000 emails a month or more.

Maileroo

SMTP relay and REST API

Send through SMTP credentials or the REST API, with official SDKs, dynamic templates and streams. Both are available on every plan.

Inbound routing

Receive mail with expression rules, catch-all and regex matching, forwarders and parsed JSON webhooks. Inbound volume is capped by plan.

Email testing

Test emails go to SMTP sinks and inboxes, with client previews in light and dark, spam scoring and authentication checks. The monthly test allowance grows with the plan.

Delivery handling

Automatic IP warmup, bounce and complaint classification, suppression lists, and SPF, DKIM and DMARC enforcement come with every plan.

Event tracking

Track delivery, opens, clicks and bounces, with an event timeline per message that can be filtered by domain, tag or recipient.

Postmark

Email API and SMTP

Send through a REST API with official SDKs or through SMTP, with batch sending, a sandbox mode and migration guides from other providers.

Message streams

Transactional and bulk or broadcast email run on separate sending infrastructure, so marketing sends do not affect password resets and receipts.

Inbound email processing

Pro and Platform turn incoming email into a JSON object and post it to a webhook URL your app handles.

Templates

Responsive templates for welcome emails, password resets and receipts, with a template editor and import tool.

Message history and analytics

45 days of full message content by default, adjustable from 7 to 365 days, with bounce details, open and link tracking and a stats API.

DMARC monitoring

DMARC Digests reports show authentication problems and who is sending with your domain, sold as an add-on from $14 a month per domain.

Maileroo

• Free$0

  3,000 outbound and 1,000 inbound emails a month, 2 sending domains, 100 test emails and 5 test inboxes.

• Basic$10

  per month for 25,000 outbound emails

  25,000 inbound emails, unlimited sending domains, 1,000 test emails and Trigger Actions.

• Starter$15

  per month for 50,000 outbound emails

  50,000 inbound emails, unlimited sending domains and 5,000 test emails.

• Premium$30

  per month for 100,000 outbound emails

  100,000 inbound emails, unlimited sending domains and 10,000 test emails.

• Pro$72

  per month for 250,000 outbound emails

  Adds one dedicated IP. 250,000 inbound emails and 25,000 test emails. An Ultimate step at $140 a month covers 500,000 outbound emails.

• Enterprise$250

  per month for 1,000,000 outbound emails

  One dedicated IP, 1,000,000 inbound emails and 125,000 test emails. Higher volumes are handled through the Contact Us link.

Postmark

• Free$0

  100 emails a month, never expires; extra emails cannot be bought on this plan.

• Basic$15

  per month for 10,000 emails

  5 sending domains, 4 users, 45 days of history, no inbound email. Extra emails $1.80 per 1,000; $55 a month at 50,000 emails.

• Pro$16.50

  per month for 10,000 emails

  10 domains, 6 users, inbound email, retention up to 365 days. Extra emails $1.30 per 1,000; $60.50 a month at 50,000 emails.

• Platform$18

  per month for 10,000 emails

  Unlimited domains, servers, streams and users, with inbound email. Extra emails $1.20 per 1,000; $66 a month at 50,000 emails.

• High volumeCustom

  Custom pricing for large senders, arranged through sales.

Maileroo

No public discounts listed.

Postmark

• Startups

  $75 credit for bootstrapped companies

  Companies that have launched, are charging for their product and have taken no outside investment can ask support for $75 of account credit.