Rust SMTP

Open-source Rust projects categorized as SMTP

Top 10 Rust SMTP Projects

  1. mail-server

    Secure & Modern All-in-One Mail Server (IMAP, JMAP, POP3, SMTP)

    Project mention: Revolutionizing Email: Stalwart Mail Server - Secure, Modern, and Easy to Use | dev.to | 2025-03-04

    View the Project on GitHub

  2. CodeRabbit

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  3. himalaya

    CLI to manage emails

    Project mention: Ask HN: Is there a dev friendly alternative to Gmail, Outlook, etc.? | news.ycombinator.com | 2025-03-07

    https://github.com/pimalaya/himalaya has some, but not all, of your requirements

  4. lettre

    a mailer library for Rust

  5. core

    Chatmail Rust Core library, used by Android/iOS/desktop apps, bindings and bots 📧 (by chatmail)

  6. kumomta

    The first Open-Source high-performance MTA developed from the ground-up for high-volume email sending environments.

  7. mail-send

    E-mail delivery library for Rust with DKIM support

  8. erooster

    A mail suite written in rust meant to be easy to use.

  9. SaaSHub

    SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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  10. mailfred

    Expose services through the email infrastructure

  11. paperboy

    🗞 Paperboy is a CLI tool that delivers new posts from your favorite sites by email. (by eduardostuart)

  12. pyrustify

    A Python package written in Rust for email verification without sending any emails.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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Rust SMTP related posts

  • Q3 2023 update - Notifications

    4 projects | dev.to | 17 Oct 2023
  • Announcing mailfred 0.1, a library to offer services through the email infrastructure processing emails as requests & responses.

    3 projects | /r/rust | 10 Jul 2023
  • Mailtutan is an SMTP server s written in Rust for test and development environments.

    3 projects | /r/rust | 7 Jun 2023
  • Looking for help in GPL project

    2 projects | /r/rust | 31 May 2023
  • Sending emails with lettre

    1 project | /r/rust | 22 Mar 2023
  • vSMTP 2.2 release

    1 project | /r/rust | 21 Mar 2023
  • Announcement: SMTP Server in Rust with DMARC, DANE, MTA-STS, Sieve, OTEL support

    8 projects | /r/selfhosted | 2 Mar 2023
  • A note from our sponsor - SaaSHub
    www.saashub.com | 26 Mar 2025
    SaaSHub helps you find the best software and product alternatives Learn more →

Index

What are some of the best open-source SMTP projects in Rust? This list will help you:

# Project Stars
1 mail-server 6,920
2 himalaya 4,672
3 lettre 1,976
4 core 720
5 kumomta 309
6 mail-send 224
7 erooster 55
8 mailfred 30
9 paperboy 18
10 pyrustify 17

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