Head-to-head · SMTP Relay Services
Maileroo vs SendLayer
Maileroo leads on 1 check, SendLayer on 0, and 1 is even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreMaileroo · 8.3/10
- Free planonly Maileroo
- Most featuresSendLayer · 1 of 3
Maileroo scores higher on our rubric for smtp relay services: 8.3 against 8.1 out of 10; our editors rank them #5 and #6.
Maileroo offers free plan; SendLayer doesn't.
Maileroo is the better fit for developers wanting broad transactional-email coverage. SendLayer is the better fit for wordPress and commerce sites needing relay.
- Maileroo fits best
Developers wanting broad transactional-email coverage
- SendLayer fits best
WordPress and commerce sites needing relay
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Side by side
| Feature | Maileroo 8.3/10 Visit ↗ | SendLayer 8.1/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.3 | 8.1 |
| Ranking | #5 in SMTP Relay Services | #6 in SMTP Relay Services |
| Best for | Developers wanting broad transactional-email coverage | WordPress and commerce sites needing relay |
| Pricing model | Free plan + paid | Paid |
| Starting price | — | $5/mo |
| Free plan | ✓ (best) | — |
| Free trial | — | — |
| Deployment | Cloud | Cloud |
| Platforms | Web | Web |
| Support | Email, Live chat, Docs | Tickets, Docs |
| Compliance | GDPR, 2FA, SSO/SAML | GDPR, 2FA |
| Integrations | 3 integrations | 1,000+ integrations |
| Built for | Small business, Mid-market, Enterprise | Solo, Small business, Mid-market, Enterprise |
| Features Maileroo 0/3 · SendLayer 1/3 | ||
| Inbound email parsing | Not checked yet | Not checked yet |
| Event webhooks | Not checked yet | ✓ (best) |
| Subaccounts | Not checked yet | Not checked yet |
| Specs | ||
| Monthly send limit | Not checked yet | 1000 emails/mo |
| Dedicated IP option | Not checked yet | Not checked yet |
| Email log retention | Not checked yet | Not checked yet |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | 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 → |
SendLayer is a transactional email delivery service for websites, applications, developers, and businesses. It accepts outgoing messages through an email API or SMTP relay, then provides delivery logs, open and click tracking, bounce… Read the review → |
Strengths and trade-offs
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
SendLayer — where it wins
- Supports both API and SMTP relay delivery
- Includes logs, tracking, bounce, and suppression management
- Integrates with WordPress, commerce platforms, and frameworks
Where it doesn't
- The verified monthly sending limit starts at 1,000 emails
- There is no free plan
- Scale pricing is quote-based
- Maileroo8.3/10 · Free plan
A developer-focused SMTP and API service with inbound routing, webhooks, templates and analytics.
Visit MailerooFull verdict → - SendLayer8.1/10 · Paid
A focused relay service for website and application email, starting at $5 per month billed annually.
Visit SendLayerFull verdict →
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All SMTP relay services comparisons → · Full ranking →
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update





