Fair, just saying i havent had issues with sites, might be europe specific.
If you are bored or a nagging ass like me, you could remind those websites that the rfc (which is the standard for email) expicitly allows plus in emails and they need to allow that.
ChairmanMeow@programming.dev 2 months ago
RFCs aren’t really law you know. They can deviate, it just means less compatibility.