I also had this problem. I tried 3 small (<1k user) instances and never got a signup email from any of them. Almost began to wonder if Gmail was just blackhole filtering all of them.
It’s more a problem of aggressive spam filtering- “big name” email domains will automatically ignore traffic from every email server thats not part of a known proven white-list, ostensibly to stop spammers from spinning up new domains every few minutes to keep sending mails. So any small service, including a self hosted option for email, often gets conveniently blackholed by the monopoly and are not usable.
I also had this problem. I tried 3 small (<1k user) instances and never got a signup email from any of them. Almost began to wonder if Gmail was just blackhole filtering all of them.
I signed up on a smaller instance, and it took them like two weeks to confirm my account. But it does work now.
They might be? Federation isn’t great for all of the big boys.
It’s more a problem of aggressive spam filtering- “big name” email domains will automatically ignore traffic from every email server thats not part of a known proven white-list, ostensibly to stop spammers from spinning up new domains every few minutes to keep sending mails. So any small service, including a self hosted option for email, often gets conveniently blackholed by the monopoly and are not usable.