Simple, modern, lightweight & fast web-based email client.
Mobile booting with ~138 KB download (using Brotli) and up to 99% performance grade by Lighthouse.
This is a fork of the much appreciated RainLoop, but with massive changes to be compatible with (mobile) browsers of 2020 and newer.
Checkout the source, releases and wiki at GitHub
Demo's
SnappyMail and RainLoop
Lighthouse
Here's the mobile performance comparison of the two demo's on this server (with Apache deflate off).
Here's the mobile performance comparison of a large mailbox on a different server (with Apache deflate on).
Taken with a 200Mb/s connection on a moderate Intel I5 PC.
You may do your own tests in the Chrome/Chromium developer tools.