← all categories
Best Transactional Email tools
APIs agents call to send transactional email (receipts, magic links, alerts).
Ranked by cost · 100k emails+ verified agent-readiness · not yet benchmarked
Comparable cost for a standard workload — the objective axis. AI rank = price-blind quality opinion aggregated from multiple AI models (labeled, never mixed into the cost order). Click any column to sort. how it's scored →
↓ sorted by cost — cheapest for the standard workload first · click any header to re-sort · # = position in current sort
| # | Tool | 100k emails | AI rank | Free tier | SOC 2 | Docs | Maint. |
|---|---|---|---|---|---|---|---|
| 1 |  Amazon SES | ✗ | — | — | |||
| 2 |  Scaleway Transactional Email | — | — | — | |||
| 3 |  Elastic Email | — | — | active | |||
| 4 |  Mailtrap | — | — | ||||
| 5 |  Twilio SendGrid | ✗ | 4/5 | — | |||
| 6 |  Resend | 4/5 | — | ||||
| 7 |  SMTP2GO | 4/5 | — | ||||
| 8 |  MailerSend | — | — | — | |||
| 9 |  Mailchimp Transactional (Mandrill) | ✗ | — | — | |||
| 10 |  Brevo | — | — | — | |||
| 11 |  Mailgun | 4/5 | — | ||||
| 12 |  Mailjet | — | — | ||||
| 13 |  Postmark | — | — | — | |||
| 14 |  Bird Email (ex-SparkPost) | 4/5 | — | ||||
| 15 |  Zoho ZeptoMail | ✗ | — | — |