Element for Android doesn’t support searching in encrypted channels and I think you can’t use E2EE in the browser at all(?), plus basically every other client has even more drawbacks when it comes to E2EE.
My team recently tried RocketChat, but E2EE is obviously an afterthought for that project as it has even more limitations than non-Element Matrix clients (no searching, no pinning, no file upload, no edit, etc.). Plus Jitsi integration seems to be buggy right now (at least on my Windows installation).
What else is out there that’s not on my radar? Is Matrix with Element really the best option right now? Is there no project that puts E2EE above all else?
Edit: Should be self-hostable and (FL)OSS.
Again, the web client, or any client, can’t have search or message history that works at 100% until it has downloaded your user history, decrypted, and indexed it.
I’ve not had any issue sending and receiving encrypted messages in the web UI, nor accessing message history once I give it some time to catch up on decrypting it.
Syphon is in alpha, and thereby extremely basic, last I checked.
I think you’ll have to just try it and see what state it is in, my issues with it were UI related and subjective, but otherwise I recall it being fine.
Doesn’t change anything from the fact that the Android client simply doesn’t have implemented that feature.