I use Austici because users can have 5 alias addresses, you can delete one and create a new alias, but has a limit 5.
Nobody has my true address, my main address, 100% everyone I email or give out my address are all different aliases. If one alias gets too much spam I delete and make a different one so spam doesn't reach my inbox.
I've been using SimpleX for at least 6 months as a full replacement for both Session and Briar and I have gotten a few people over SimpleX.
Now I only use Signal and SimpleX exclusively, nothing else to talk with people.