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Head-to-head · SMTP Relay Services

Maileroo vs SendLayer

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score Maileroo #5 in SMTP Relay Services 8.3/10 Free plan Free plan✓ 0 of 3 features Visit Maileroo
SendLayer #6 in SMTP Relay Services 8.1/10 Paid ✓ 1 of 3 features Visit 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

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

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
  • 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
  • Supports both API and SMTP relay delivery
  • Includes logs, tracking, bounce, and suppression management
  • Integrates with WordPress, commerce platforms, and frameworks
Cons
  • 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
  • The verified monthly sending limit starts at 1,000 emails
  • There is no free plan
  • Scale pricing is quote-based
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 →
  1. MailerooSMTP Relay Services 8.3Free plan
  2. SendLayerSMTP Relay Services 8.1Paid

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 →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update