Have you tried @npub1tm99...xn72 yet? I've had some success with it as a nostr based Telegram replacement.
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Haven't; downloading now
Feel free to DM to test and check out their git to learn about how it's transmitting your messages 
GitHub
0xchat⚡️
Secure Chat Built on Nostr. 0xchat⚡️ has 13 repositories available. Follow their code on GitHub.
I just installed 0xchat a few days ago, but I can't find my communities created in satellite.earth or my public chat created in Amethyst.