Talking to customers · Independent · 24 Oct 2026

flectar/mail

Built from the ground up for speed. Flectar Mail delivers native performance, instant startup, and as little as 80 MB of RAM.

← Talking to customers

In simple English

Flectar Mail is an app for your emails, calendars, and contacts. It opens instantly and uses very little memory on your computer or phone. It keeps your data local and works even when you are offline. It runs on Windows, macOS, Linux, Android, and iOS. It is free to use, but still in early development so some features are unfinished.

What it is

Flectar Mail is a native email, calendar, and contacts client written entirely in the Rust programming language (a system-level language known for speed and safety). It renders HTML messages using its own native engine rather than an embedded web browser.

What it is good for

Solo builders who want a fast, low-memory email client that brings together multiple accounts, calendars, and contacts without relying on a heavy web browser.

Stars1.6k
LicenceAGPL-3.0
Latestv0.1.0-alpha.7 (2026-10-08)checked 24 Oct 2026
Last code change2026-10-24
Written inRust
Setup effort
3 / 5
Payoff
4 / 5
Good
  • Uses as little as 80 megabytes of RAM.
  • Stores your mail and calendar locally for offline use.
  • Connects to standard IMAP, POP3, JMAP, CalDAV, and CardDAV accounts.
Watch for
  • Requires technical knowledge to compile from source or troubleshoot early release bugs.
  • HTML email rendering is experimental and complex messages may look broken.
  • Google and Microsoft OAuth sign-in require manual setup or sponsored verification.
Replaces

Thunderbird or web-based email clients

Works well with

GnuPG

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Install
cargo run --bin flectar-mail

Independent: reviewed for Repo Radar outside the daily editions. Every independent repository

On Stack Radar: Productivity & Collaboration › Email & Team Communication › Email Clients.

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