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Your email,delivered at Posthaste

Why I'm building Posthaste

I wanted a mail client that treated my mail as mine: kept on my machine, in an open format, behind an interface I could build on. I wanted email to be fast, easy, integrated into my workflows. Nothing like this existed, and so Posthaste puts a documented API in front of lean, optimised runtime; comes as configurable distributed modules for power users who want to host their runtime remotely; and is fully OSS;

Posthaste is the best client I've ever used. I hope the same will be the case for you.

Best, Theo

https://theor.net

A look inside

Posthaste inbox showing a threaded conversation with nested replies — Threaded conversation view

Posthaste reading pane with an open email thread — Reading a thread

Posthaste compose window with a draft reply — Compose

Posthaste command palette open over the inbox — Command palette

Run Posthaste on your own server

Self-host the backend and join runtime nodes across machines — distributed, TLS-ready, and one command away.

Wizard guide →

OSS Statement

Posthaste is free. Posthaste is fully local, and doesn't store any data or telemetry. Posthaste forever will be open to the public to fork, modify and use.