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ranking

Best deliverability

Ranked on independent inbox-placement tests over the past two years.

criteria

  1. 01

    Postmark

    Transactional

    Consistently in the top tier across independent tests.
  2. 02

    SMTP2GO

    Transactional

    Repeatedly recognized for top inbox placement.
  3. 03

    Mailtrap

    Transactional Testing

    Strong recent results.
  4. 04

    Amazon SES

    Transactional

    Strong at scale once warmed and configured. Reputation rides on AWS regional pools.
  5. 05

    SendGrid

    Transactional Marketing

    Solid but variable across the shared-IP pool.
  6. 06

    Mailgun

    Transactional

    Good, with reputation tooling on higher tiers.
How rankings are produced →