[menaerus]

Sure, the advantages of async communication are obvious but the crucial difference is that in that case vendor has to store your data somewhere in the data center. Reusing that data for unsolicited purposes is what many people will have a concern with.

[indeyets]

But logs are stored on IRC as well. It’s not a part of standard protocol, but a lot of ir c-servers can do that automatically and there are boys which do that not to mention personal archives. The difference is that end-users don’t have easy access to this logs. And on discord they do (because it is a part of protocol)

[cmiller1]

How about a secure async chat where the vendor simply stores a list of message IDs, and then the client requests if anyone has a copy of any message you haven't received yet from the other users in chat when you log on

[menaerus]

Such vendor would have a hard time finding a business model since plenty of chat-services are already existing on the market and all of them have access to the data of their users in one way or another. Thus I don't know what other type of leverage they would be able to pull off to sustain their business.