Since I already use Gandi for domains I decided to quickly try their Gandi Mail offering.
In general I'd like to reduce my use of social networks. In most cases I don't think I really need them and just waste time using them but I think that good replacements might make the transition simpler
Similar to Twitter but federated. I'm currently using the mastodon.social instance.
I don't plan to close my twitter account yet so I'm using MTC to cross-post my toots to Twitter, but not the other way around.
Mattermost seems like a good alternative for Slack
I'm adding these since they seem to run on renewable energy