EmailEngine
EmailEngine is a self-hosted email API. It connects to any email account over IMAP/SMTP, the Gmail API or Microsoft Graph and exposes all of them through one REST API, with real-time webhooks for new, changed and deleted messages, bounces and sent mail. Developers use it to sync their users' mailboxes into their own product and send email on the users' behalf, without writing IMAP, MIME or OAuth2 code themselves. Built by Postal Systems, the team behind Nodemailer.
EmailEngine
EmailEngine is a self-hosted email API. It connects to any email account over IMAP/SMTP, the Gmail API or Microsoft Graph and exposes all of them through one REST API, with real-time webhooks for new, changed and deleted messages, bounces and sent mail. Developers use it to sync their users' mailboxes into their own product and send email on the users' behalf, without writing IMAP, MIME or OAuth2 code themselves. Built by Postal Systems, the team behind Nodemailer.
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234 active subscriptions
Andris Reinman976 followers on 𝕏
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One REST API and webhook stream for every email provider (IMAP/SMTP, Gmail, Outlook/Microsoft 365), running on your own servers so mailbox data never leaves your infrastructure.
Building two-way email integration is slow and fragile: IMAP connection handling, MIME parsing, OAuth2 token refresh and per-provider API differences take months to get right. EmailEngine handles all of it, so a team can add mailbox sync and sending to its product in days.
Audience
SaaS developers and engineering teams building email features (CRMs, helpdesks,
Pricing
$1,450 per year, unlimited instances and unlimited email accounts. 14-day free trial on every instance. Custom terms and perpetual licenses on reques
Team size
1 person
Funding
Bootstrapped
Domain Rating
emailengine.app
Ahrefs Domain Rating measures backlink profile strength on a 0 to 100 logarithmic scale.
Marketing channels
Market
Additional info
Self-hosted, ships as a single binary, Docker image or npm package. Source available on GitHub (postalsys/emailengine). Supports OAuth2 for Google and Microsoft, a hosted authentication form for onboarding accounts and bulk mailbox export. Made by the authors of Nodemailer and ImapFlow.
Screenshot
emailengine.appProduct updates
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