Head-to-head · SMTP Relay Services
Postmark vs Maileroo
Postmark leads on 0 checks, Maileroo on 0, and 1 is even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scorePostmark · 8.2/10
- Free planboth
Postmark scores higher on our rubric for smtp relay services: 8.2 against 6.7 out of 10; our editors rank them #2 and #7.
Postmark is the better fit for transactional teams needing streams and templates. Maileroo is the better fit for developers wanting broad transactional-email coverage.
- Postmark fits best
Transactional teams needing streams and templates
- Maileroo fits best
Developers wanting broad transactional-email coverage
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Side by side
| Feature | Postmark 8.2/10 Visit ↗ | Maileroo 6.7/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.2 | 6.7 |
| Ranking | #2 in SMTP Relay Services | #7 in SMTP Relay Services |
| Best for | Transactional teams needing streams and templates | Developers wanting broad transactional-email coverage |
| Pricing model | Free plan + paid | Free plan + paid |
| Starting price | $15/mo | Not published |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Cloud | Cloud |
| Platforms | Web | Web |
| Support | Live chat, Docs | Email, Live chat, Docs |
| Compliance | GDPR, 2FA | GDPR, 2FA, SSO/SAML |
| Integrations | 12 integrations | 3 integrations |
| Built for | Solo, Small business, Mid-market, Enterprise | Small business, Mid-market, Enterprise |
| Features Postmark 0/3 · Maileroo 0/3 | ||
| Inbound email parsing | Not published | Not published |
| Event webhooks | Not published | Not published |
| Subaccounts | Not published | Not published |
| Specs | ||
| Monthly send limit | 10000 emails/mo | Not published |
| Dedicated IP option | Not published | Not published |
| Email log retention | Not published | Not published |
| Our review | ||
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| Our verdict | Postmark is an email delivery service for application teams sending transactional and broadcast messages through REST APIs or SMTP. It supports application email, individual or batch messages, reusable HTML and plain-text templates,… Read the review → |
Maileroo is an email delivery platform for developers, startups, agencies and enterprises. It supports transactional, bulk and scheduled email through a RESTful API or SMTP relay, while inbound email routing connects incoming messages to… Read the review → |
Strengths and trade-offs
Postmark — where it wins
- Separate transactional and broadcast message streams
- Inbound parsing with JSON webhooks and delivery events
- Reusable templates with previews, variables, and test sends
Where it doesn't
- Free plan allows only 100 emails per month
- Listed paid plans include 10,000 emails per month
- Dedicated IPs are limited to eligible high-volume customers
Maileroo — where it wins
- Free tier includes outbound and inbound email allowances
- Supports SMTP, REST delivery, webhooks and inbound routing
- Integrates with PHP, Laravel, Node.js, Python, Go, .NET and Java
Where it doesn't
- Free Plan is limited to 3,000 outbound emails monthly
- Paid SMTP plan provides 25,000 emails per month
- Dedicated IP options are aimed at higher-volume sending
- Postmark8.2/10 · Free plan · paid from $15/mo
A focused SMTP and API service for transactional email, streams, templates, and events.
Visit PostmarkFull verdict → - Maileroo6.7/10 · Free plan
A developer-focused SMTP and API service with inbound routing, webhooks, templates and analytics.
Visit MailerooFull verdict →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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