The Best 25 SMTP Logic Alternatives

  • Mailgun

    Mailgun is email automation for developers. Use our REST APIs to effortlessly send, receive and track email from your website or application.

    Freemium Web

  • Pepipost

    Pepipost is the speedy transactional email delivery service that provides reliable Inboxing in less than a second — all with a very disruptive pricing model. Only pay for unopened emails. The rest is on us.

    Free Web

  • Sendgrid

    Scalable email delivery for transactional email SendGrid transparently handles DKIM, SPF, ISP rate limits, content inspection, bounces, and spam reports to help users achieve higher deliverability.

    Freemium Web

  • Shiftmail

    Cloud Email Analytics. Professional deep dive email analytics software made solely to measure and analyse email engagement. Stop getting binned, start connecting, get converting.

    Commercial Web

  • Postmark

    Postmark removes the headaches of delivering and parsing transactional email for webapps with minimal setup time and zero maintenance. Send API and SMTP interface.

    Commercial Web

  • JangoSMTP

    JangoSMTP lets you send transactional emails via SMTP or API. It's the first transactional email service to offer open and click tracking. Pricing is based on...

    Freemium Mac OS X Windows iPhone iPad Web

  • Lob

    Printing and Mailing for Developers Lob enables you to seamlessly print and mail documents, postcards, checksand more via an API. Integrate easily into your web or...

    Commercial

  • mailmark

    Send emails and know when they were opened. Keep detaile email logs to who they were sent and when. A memo system to help organizations notify thier members.

    Freemium Web

  • Sparkpost

    The most performant email delivery service—whether your app or website sends hundreds, or billions, of messages.

    Commercial Windows

  • outMail

    outMail providing a secure and trusted email relay (also known as SMTP Smart Host or mail proxy) outMail by Prolateral is an independent SMTP service provider...

    Commercial Mac OS X Windows Linux Android Windows Mobile

  • Sendwithus

    A simple API and Dashboard to manage and optimize emails sent by your application to your customers. Email is a powerful part of your customer experience. Your...

    Freemium Web

  • AuthSMTP

    AuthSMTP is the outgoing SMTP email service for your e-commerce website, mailing list or email application on most current computers and mobile devices.

    Commercial Web

  • CritSend

    CritSend's full SMTP relay service and API ensures inbox delivery for your transactional mails. Never worry about email compliance, deliverability, IP reputation or...

    Commercial Web