I have this one Swedish domain that I use for my link shortener and my Gitea instance. Since I have set up catch-all email aliases for all my domains, I also get all mails sent to these domains. But only with the Swedish domain it happens to me that I regularly receive business emails or Microsoft Teams invitations, which obviously are not addressed to me, but only end up in my inbox because someone seems to have made a typo.
Check who you send emails to! 😉