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Transactional email services

Alternatives to turboSMTP

turboSMTP handles cloud SMTP relay and API delivery for transactional messages and newsletters. Its dashboard combines campaign design with real-time click and open tracking, bounce, spam, and unsubscribe management. Smart routing, custom tracking domains, pre-send email validation, delivery webhooks, templates, dedicated IPs, and a WordPress SMTP plugin extend that core service. Android, iOS, web, and API access cover several deployment paths. A free plan allows 200 emails per day for the first six months; Basic starts at €14.95 per month for 15,000 emails, with larger plans available.

  1. 01 Postmark

    Postmark suits developers sending transactional or broadcast email from applications through API or SMTP.

    From $5/mo Free plan Web · API
    9.2 Visit Specs
  2. 02 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 API
    9.1 Visit Specs
  3. 03 EmailSuccess

    It is aimed at organizations running enterprise email gateways or high-volume SMTP servers that need control over outbound delivery.

    From €333.33/mo Free plan Web · Windows · macOS · API
    9.1 Visit Specs
  4. 04 Mailchimp Transactional (formerly Mandrill)
    From $10/mo Free trial Web
    8.8 Visit Specs
  5. 05 Nuntly

    Nuntly suits developers who want to handle outbound and inbound transactional email, replies, and delivery visibility through an API.

    From €10/mo Free plan Web · API
    8.8 Visit Specs
  6. 06 ReachMail

    ReachMail suits organizations looking for campaign tools and transactional email delivery in one service.

    From $8/mo Free plan Web · iOS · Android · API
    8.8 Visit Specs
  7. 07 Mailchimp
    From $13/mo Free plan Web · iOS · Android · API
    8.8 Visit Specs
  8. 08 Posthawk
    From $20/mo Free plan Self-hosted
    8.7 Visit Specs
  9. 09 Reloop

    It suits teams building transactional email workflows that want API or SMTP delivery, inbound routing, or self-hosting.

    From $10/mo Free plan Self-hosted
    8.7 Visit Specs
  10. 10 SocketLabs
    From $39.95/mo Free trial Web · API · Self-hosted
    8.6 Visit Specs
  11. 11 Infobip Email API
    Free trial Web · API
    8.5 Visit Specs
  12. 12 Twilio Email API
    From $19.95/mo Free plan Web · API
    8.5 Visit Specs
  13. 13 Hyvor Relay
    From €30/mo Free plan Web · API · Self-hosted
    8.5 Visit Specs
  14. 14 MailerSend

    MailerSend suits developers and teams integrating transactional email through an API or SMTP relay.

    From $7/mo Free plan Web · iOS · API
    8.5 Visit Specs
  15. 15 Twilio Segment
    From $120/mo Free plan Web · iOS · Android · API
    8.5 Visit Specs
  16. 16 Maileroo

    Maileroo suits developers and scaling businesses sending transactional or marketing email through SMTP or an API.

    From $10/mo Free plan Web · API
    8.4 Visit Specs
  17. 17 Sendwithus
    From $149/mo Web · API
    8.4 Visit Specs
  18. 18 Resend Broadcasts
    From $20/mo Free plan Web · API
    8.3 Visit Specs
  19. 19 Netcore Email API

    Netcore describes this service for mid-market and enterprise B2C brands in sectors such as ecommerce, retail, BFSI, media, travel, edtech, and D2C.

    Free plan Web · API
    8.2 Visit Specs
  20. 20 Aritic Mail
    From $9/mo Free trial Web · API
    8.2 Visit Specs
  21. 21 Mailmark
    From $10/mo Free trial Web · API · Self-hosted
    8.2 Visit Specs
  22. 22 Plunk
    Free plan Web · API · Self-hosted
    8.1 Visit Specs
  23. 23 Retarus Transactional Email

    The service is aimed at software vendors, platform businesses, large enterprises, and highly regulated industries that send transactional email from business applications.

    Free trial Web · API
    8.1 Visit Specs
  24. 24 QQueue
    Free plan Web · API · Self-hosted
    8.1 Visit Specs
  25. 25 Posta

    Posta suits teams that want open-source email delivery on their own infrastructure.

    Free plan Web · API · Self-hosted
    8.0 Visit Specs
  26. 26 Pombo
    From $29/mo Free plan Web · API
    8.0 Visit Specs
  27. 27 MailsSetu
    From ₹399/mo Free plan Web · API
    7.8 Visit Specs
  28. 28 SMTP2GO
    From $8.33/mo Free plan Web · API
    7.8 Visit Specs
  29. 29 JangoSMTP
    Free trial Web · API
    7.6 Visit Specs
  30. 30 JangoMail
    Free trial Web · API
    7.6 Visit Specs

Choosing instead of turboSMTP

An alternative may suit you better if you need customer-data management, a permanent small free tier, inbound routing, marketing automation, on-premises delivery, or a different platform mix. Compare each service’s sending method, volume allowance, trial or free-plan duration, integrations, tracking, and authentication controls. Also consider the trade-off: a focused email API, campaign platform, data system, or self-hosted gateway may offer a capability turboSMTP lacks while omitting parts of its combined transactional and marketing toolkit.

turboSMTP, head to head