Earlier quoted context omitted.
Wonder how common it is to leave the +xyz appendix on email addresses when renting/selling them, or if they’ve been regexing them out for years.
Regexing them out will break mail deliverability if the mail system doesn't do plus addressing. And you cannot know from a third party perspective if someone just likes putting plusses in their email address or if the plus is for plus addressing.
Interesting. Apply to Gmail even?
Not sure they’d let you register foo+1 at Gmail or force you to choose foo or foo1 and plus accordingly later