TYPO3 Core

It would be nice to have an email-evaluation for
['columns'][fieldname]['config'] / TYPE: "input"
fields (configurable via TCA).

Suggestion: expand the 'eval' key with the keyword email.
The evaluation could be done serverside (e.g. t3lib_div::validEmail()) or clientside (like the ...case "_EMAIL"... in t3lib/jsfunc.validateform.js). Best would be twice

If typo3 would have this possibility it should be no problem to check
the email fields everywhere in the backend like
- user record edit screen
- email address of the admin in the Setup

(issue imported from #M1717)