Every day I delete 10-15 such accounts... 

Well that would screw over people like me that have legit emails with dots in it.

my.name.email@gmail.com (not my real email but what it is with my actual name) basically. I've had my email since at least 2006 if not earlier.

Problem is that my.name@ and m.yname@ - the same email for google, it does not use points in the name. But for the forum these are different emails.

compare red lined emails letter by letter

So the base suggestion, more accurately described, is to compare the emails "sans dots" before registration?

Morrigan, yep! Really not exactly correct formulated, sorry. 

Gmail ignores the . m.name and mnam.e go to the same inbox

https://support.google.com/mail/answer/7436150?hl=en

Edited October 31, 20204 yr by Aiwa

I think ALL periods are ignored in emails. Right?  If so then IPB should strio them first then compare. Not just a straight up select mysql search on the email field. 

That's a gmail-specific thing, although some other email providers do something similar. It would not be safe to blanket strip dots from emails, because that could open up security vulnerabilities relating to emails that do distinguish dots.

Think this is better left off to be dealt with by the spam service. If they changed that to strip the dots and plus signs and all other things that providers typically ignore, and then add a score on that stripped email address.

The spam service compares multiple factors - report the users as spammers and configure your site to hide or delete all content from users you flag as spammers. The numbers should dwindle over time.

I believe this plugin handles this:

It may just address the username+anythingyouwant@gmail.com variant though.

Yes, leave it to spam service. I get a lot of these too, Most of them don't even manage to verify their emails.

My application linked above by @Paul E. does indeed handle this. In addition to being able to block registrations from disposable e-mail addresses, it supports detecting e-mail aliases from GSuite / GMail using the dot (foobar@gmail.com / foo.bar@gmail.com) syntax, as well as the plus alias syntax (foo@gmail.com / foo+bar@gmail.com).

I foresaw this being a potential for abuse long ago and implemented these measures to protect against them before it became commonplace 😉