It is already usable as an alternative Gmail interface with a set of unique features:<p><pre><code>  - internal lightweight tabs
  - linking few threads together
  - composing emails with Markdown
</code></pre>
Backend. Python3. Main JSON-RPC server and WebSocket server for push notifications (with help of Werkzeug, psycopg2, aiohttp, lxml).<p>Frontend. ES6. Single-page application based on vuejs. Also it used less as CSS preprocessor and browserify for bundling up all dependencies.<p>Public demo: <a href="http:&#x2F;&#x2F;mail.pusto.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;mail.pusto.org&#x2F;</a><p>Short demo video: <a href="https:&#x2F;&#x2F;vimeo.com&#x2F;145416826" rel="nofollow">https:&#x2F;&#x2F;vimeo.com&#x2F;145416826</a><p>Github page: <a href="https:&#x2F;&#x2F;github.com&#x2F;naspeh&#x2F;mailur&#x2F;" rel="nofollow">https:&#x2F;&#x2F;github.com&#x2F;naspeh&#x2F;mailur&#x2F;</a><p>Discuss on reddit: <a href="https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;linux&#x2F;comments&#x2F;3t07mv&#x2F;mailur_the_future_open_source_replacement_for&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.reddit.com&#x2F;r&#x2F;linux&#x2F;comments&#x2F;3t07mv&#x2F;mailur_the_fu...</a>