Best Transactional Email Services in 2026 · page 2
- 26
Mailmark
WebAPISelf-hosted6.8From $10 a month - 27
MailsSetu
MailsSetu is a developer-first transactional email API and SMTP platform for production messaging.
Free planWebAPI6.8From ₹399 a month - 28
Retarus Transactional Email
Retarus Transactional Email sends high volumes of transactional emails from business applications through Retarus Enterprise Cloud.
WebAPI6.7 - 29
Posta
Posta is a self-hosted email delivery platform for sending and receiving email through an HTTP API.
Free planWebAPISelf-hosted6.7Free plan - 30
QQueue
QQueue is a self-hosted email system that sends campaign, transactional, and manual messages through one SMTP-based pipeline.
Free planWebAPISelf-hosted6.7Free plan - 31
SendLayer
Web6.5From $5 a month - 32
Sidemail
Web6.4From $2 a month - 33
JangoMail
WebAPI6.3 - 34
JangoSMTP
WebAPI6.2 - 35
Emailit
WebAPI6.2From $20 a month - 36
Twilio Email API
Twilio Email API lets teams add transactional email to applications and cross-channel workflows through the Twilio Console.
Free planWebAPI6.2Free plan - 37
ZeptoMail
ZeptoMail, now Zoho CPaaS, is a paid email service built exclusively for transactional messages such as verification codes and password resets.
Free planWebAPI6.2Free plan - 38
6.1 - 39
ClrStream
WebAPI5.9 - 40
Amazon SES
WebAPI5.9 - 41
Sarv Transactional Email
WebAPI5.9