TomThomson (8/27/2014)

---

GilaMonster (8/27/2014)

---

sqldriver (8/27/2014)

---

GilaMonster (8/27/2014)

---

sqldriver (8/27/2014)

---

I used to use this. Not perfect by any stretch but got most of the junk out.

Does it flag this as invalid?

MyAccount+SSC@Gmail.com

http://gmailblog.blogspot.com/2008/03/2-hidden-ways-to-get-more-from-your.html

It does.

Which is why I point people at that linked blog post on this topic, as what is allowed is much broader than most regex statements allow. That, and the fact that I get tired of having valid emails rejected. I still sometimes get told my .za.net email is invalid (since za is usually a top-level domain)

And I sometimes get my .org.uk address rejected because .org is usually a top level domain. More often I get sites I'm providing an address to asking if I really mean .org.uk, not just .org - and in fact both work, so it isn't really a problem.

Ages ago I saw the same problem for .ac.uk, but I think that was people trying to use the new address format before the agreed date. It didn't affect my address, because I was tom@oxprg until I was actually required to change to tom@prg.ox.ac.uk - and in fact I don't think anyone at prg was ever bitten. But I remember someone somewere else (someone at bath.ac.uk I think) being caught out when trying to jump the gun.

edit: I also had addresses full of "!" and/or "%" back in the days before the shiny new email address RFC - in fact I suspect I was tom%oxprg rather that tom@oxprg, it was a long time ago and I don't really remember.