$/transactional-email-api providers ↗
← Email on Acid
alternatives

Email on Acid alternatives

Providers that compete with Email on Acid on at least one of: Testing

Email previews and pre-deployment QA across 90+ clients.

closest matches

  1. 01

    Mailpit

    Testing

    Modern local SMTP catcher.

    Free, MIT-licensed · Free
  2. 02

    Parcel

    Testing Templates

    Code-first email editor with live previews across major clients.

    Free tier for individuals with limited preview seats · Team plans listed on the public pricing page
  3. 03

    Mailtrap

    Transactional Testing

    Originally a staging inbox, now a sender too.

    4,000/mo (sending), free testing tier · $15/mo for 10,000 sending
  4. 04

    Ethereal Email

    Testing

    Throwaway SMTP accounts on demand.

    Free · Free
  5. 05

    MailSlurp

    Testing Inbound

    Programmable inboxes for testing, inbound workflows, and email automation.

    No permanent free plan listed on the current public pricing page · $19.99/mo Starter
  6. 06

    Litmus

    Testing

    Email client previews and pre-send QA across 100+ inbox environments.

    7-day free trial; no permanent free tier on the main paid plans · Basic plan listed on the public pricing page; exact figure varies by region and is sales-driven on higher tiers
  7. 07

    MailCatcher

    Testing

    Tiny Ruby-based local SMTP catcher.

    Free, MIT-licensed · Free
  8. 08

    MailDev

    Testing

    Node-based local SMTP catcher.

    Free · Free
All provider alternatives →