You can write/use script that deletes all your messages I haven't used this myself, but maybe this? https://gist.github.com/victornpb/135f5b346dea4decfc8f63ad

You can write/use script that deletes all your messages I haven't used this myself, but maybe this? https://gist.github.com/victornpb/135f5b346dea4decfc8f63ad7d9cc182 https://gist.github.com/victornpb/135f5b346dea4decfc8f63ad7d...