18.3
Mailchimp is an email marketing service with web, iOS, and Android access.
Free planAndroidiOSWeb
Best Transactional Email Software in 2026
Transactional email software handles messages sent in response to activity in an application or service. Compare delivery methods and template options, and consider how event webhooks and delivery log retention fit your operational needs. A dedicated IP option may be relevant to your sending setup; monthly send limits, free-plan availability, and paid-from pricing help frame capacity and cost. Mailchimp, Nuntly, and…
28.2
turboSMTP is a cloud SMTP service for sending email messages and newsletters, with statistical analysis for individual and aggregate messages.
Free planAndroidiOSWeb
38.1
ReachMail provides email marketing and transactional email delivery through web and API access.
Free planAndroidiOSWeb
- 4
MailerSend
MailerSend delivers transactional email through an email API and SMTP relay.
Free planiOSWebAPI7.8From $7 a month - 5
EmailSuccess
Free planWebAPImacOSSelf-hosted7.7From €4,000 a year - 6
Postmark
Postmark delivers and tracks application email as an alternative to SMTP or Sendmail.
Free planWebAPI7.6Free plan - 7
Nuntly
Nuntly is a developer-focused email platform for sending and receiving transactional email, replying to messages, and tracking delivery through one REST API.
Free planWebAPI7.4From €10 a month - 8
Twilio SendGrid
Twilio SendGrid Email API is a cloud-based email delivery service for sending messages without maintaining customer-owned email servers.
Free planAPI7.2From $19.95 a month - 9
Resend Broadcasts
Resend Broadcasts lets users send email campaigns to existing contacts through a visual editor or API.
Free planWebAPI7.1From $20 a month - 10
Reloop
Reloop is an email delivery platform for transactional and programmatic workflows, available as hosted plans or for self-hosting.
Free planSelf-hosted7.0From $10 a month - 11
Hyvor Relay
Hyvor Relay is an email API for developers that can be used through its hosted service or self-hosted.
Free planWebAPISelf-hosted6.9From €30 a month - 12
Maileroo
Maileroo provides SMTP relay and Email API services for transactional and marketing email, with inbound routing and email testing tools.
Free planWebAPI6.9From $10 a month - 13
Pombo
Pombo is an email platform for marketing, lifecycle, and transactional email that teams can operate with AI agents.
Free planWebAPI6.9From $29 a month - 14
Posthawk
Posthawk is an email delivery service for transactional, marketing, inbound, scheduled, newsletter, and broadcast messages.
Free planSelf-hosted6.9From $20 a month - 15
SMTP2GO
SMTP2GO provides SMTP and API email delivery for businesses and individual senders, with real-time reporting on deliveries, bounces, opens, clicks,…
Free planWebAPI6.9From $100 a year - 16
Twilio Email API
Free planWebAPI6.9From $19.95 a month - 17
Waypoint
Waypoint is an email API for engineers paired with a visual template builder for product teams.
Free planWebAPI6.9From $20 a month - 18
MailsSetu
MailsSetu is a developer-first transactional email API and SMTP platform for production messaging.
Free planWebAPI6.8From ₹399 a month - 19
Sendwithus
Sendwithus helps teams create, personalize, test, and manage transactional email without deploying code.
WebAPI6.8From $149 a month - 20
6.7From $10 a month - 21
SocketLabs
WebAPISelf-hosted6.6From $39.95 a month - 22
Mailmark
WebAPISelf-hosted6.5From $10 a month - 23
Aritic Mail
WebAPI6.4$9 one-time - 24
Infobip Email API
WebAPI6.4 - 25
Plunk
Free planWebAPISelf-hosted6.4Free plan