Re: I've seen a definite uptick in these
"It's a shame a lot of regular sites view any email address containing the '+' as invalid."
I've recently tried to get Tinder to send a verification email, so it will notify my via email when things happen, instead of failing to notify me on my phone. It entirely failed to even attempt to send any emails to my own email server, which are not on any spam blacklist that I check regularly. Everyone else can send to that server fine. I tend to use individual addresses for individual sites / services, so this was to tinder@... They didn't say why it failed, just that it did. No attempts spotted in my logs. Perhaps I'll try this + trick, see what happens. Or create yet another throw away gmail account.