Email Domain Datalist Helper

What if someone signs up for your web app and they type in their email address as [email protected]? They don't notice, they never get their confirmation email, they never can log in again, the "forgot password" feature doesn't work, and there is a lot of frustration and finger pointing.

Can't we help with that?

I had a really basic idea to suggest common email domains with a <datalist> suggestion dropdown. Essentially like this:

Datalists like that can be attached …

Email Domain Datalist Helper is a post from CSS-Tricks