Communication
Best Email APIs in 2026
- 01
MailerSend MailerSend suits developers and teams integrating transactional email through an API or SMTP relay.
From $7/mo Free plan Web · iOS · API9.0 Visit Specs - 02
Mailjet It suits marketing teams creating campaigns and developers sending or processing email through APIs.
From $9/mo Free plan Web · API8.8 Visit Specs - 03 turboSMTP
turboSMTP suits website and app operators sending transactional email, as well as teams running newsletters or campaigns.
From €14.95/mo Free plan Web · Windows · macOS · Linux8.7 Visit Specs - 04
EmailEngine It suits CRM, SaaS, and AI businesses, as well as teams with data-residency needs or many mailboxes.
From $120.83/mo Free trial Web · Windows · macOS · Linux8.6 Visit Specs - 05
Hyvor Relay From €30/mo Free plan Web · API · Self-hosted8.6 Visit Specs - 06
Postmark Postmark suits developers sending transactional or broadcast email from applications through API or SMTP.
From $5/mo Free plan Web · API8.6 Visit Specs - 07
CloudMailin CloudMailin suits developers who need inbound email routed to an application and transactional email delivery through an API or SMTP relay.
From $25/mo Free plan Web · API8.4 Visit Specs - 08
MailKite Server Free plan Web · API · Self-hosted8.4 Visit Specs - 09
Maileroo Maileroo suits developers and scaling businesses sending transactional or marketing email through SMTP or an API.
From $10/mo Free plan Web · API8.3 Visit Specs - 10
Resend Broadcasts From $20/mo Free plan Web · API8.3 Visit Specs - 11
Mailazy From $49/mo Free plan Web · API8.2 Visit Specs - 12
Mailtrap Email Sending From $15/mo Free plan Web · API8.2 Visit Specs - 13
Twilio SendGrid It suits teams that need email delivery through an API or SMTP and want delivery activity tracking and email validation.
From $19.95/mo Free plan API8.2 Visit Specs - 14 MailPace From $10/mo Free plan Web · API8.1 Visit Specs
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Elastic Email From $29/mo Free plan Web8.0 Visit Specs - 16
SocketLabs From $39.95/mo Free trial Web · API · Self-hosted8.0 Visit Specs - 17
e2a From $2/mo Web · API · Self-hosted7.9 Visit Specs - 18
SMTP2GO From $8.33/mo Free plan Web · API7.9 Visit Specs - 19
Amazon SES Free trial Web · API7.8 Visit Specs - 20
Emailit From $20/mo Web · API7.8 Visit Specs - 21
Posta Posta suits teams that want open-source email delivery on their own infrastructure.
Free plan Web · API · Self-hosted7.7 Visit Specs - 22
Netcore Email API Free plan API7.6 Visit Specs - 23
Plunk Free plan Web · API · Self-hosted7.6 Visit Specs - 24
Waypoint From $20/mo Free plan Web · API7.6 Visit Specs - 25 OpenSend From $10/mo Web · API · Self-hosted7.3 Visit Specs