I mainly use XMPP for chats, but can reach some people via Telegram only. Unfortunately, Telegram on Android eats too much battery and I wanted to get rid of it - but still be able to communicate with the people there.
This week I finally setup a Telegram bridge for my Prosody XMPP server, and used slidgram for that.
With it, Telegram accounts appear in my XMPP contacts list (roster) like normal people - they only have special JID like 123456789@xmpp-slidgram.cweiske.de.
There is an in-built help system that I can talk to by messaging xmpp-slidgram.cweiske.de for registration, searching people and groups.
Up to now it works flawlessly, and the phone runs longer. Slidge supports avatar images, unencrypted messages and images. Stickers are transferred as .webm files.
But I heard that every now and then I will have to re-authenticate on a desktop Telegram installation.
