SMTP2GO
Reliable SMTP relay with strong deliverability.
SMTP2GO is an underrated transactional service that focuses on doing one thing well: getting SMTP-relay email delivered. Independent tests rank its inbox placement near the top. Plans are simple and feature parity is similar across tiers.
Independent tests have repeatedly placed SMTP2GO at or near the top of inbox placement.
SMTP relay use cases where deliverability is the primary criterion.
- › Top-tier deliverability
- › Simple plan structure
- › No feature gating across paid tiers
- › Less brand awareness than SendGrid or Mailgun
- › Fewer ecosystem integrations
Features at a glance
| API | Yes |
| SMTP | Yes |
| SDKs | node, python, go, ruby, php |
| Webhooks | Yes |
| Templates | basic |
| React Email | No |
| Batch send | Yes |
| Scheduled send | No |
| Suppressions | Yes |
| Multi-tenant | Yes |
| Inbound parsing | Yes |
| Event stream | Yes |
| Idempotency keys | No |
| Dedicated IP | Yes |
Appears in rankings
Best transactional email APIs
Underrated. Independent tests place it near the top of inbox placement.
Best permanent free tiers
1,000/mo permanent, no daily cap.
Cheapest at scale (1M+/mo)
Tiered plans with full-feature parity at higher tiers.
Best deliverability
Repeatedly recognized for top inbox placement.
Best for high-volume senders
Underrated at scale; full-feature parity across tiers keeps the bill predictable.
Best AWS SES alternatives
Closest to SES on pricing predictability, with deliverability and a real dashboard.