Validation needs to be imporved in email fields.

[neeraj3029]

I'm submitting a ... (check one with "x")

• [x] bug report
• [ ] feature request
• [ ] support request => Please do not submit support requests here, instead ask your query in our Gitter channel

Current behavior: Validation in email fields is a bit inefficient, currently it only cheks the presence of @ and text before and after it.

Expected behavior: Validation can improved, it should assure presence of . and extensions.

Steps to reproduce:

Open login field Other information:

System information:

Your operating system MacOS

Would you like to work on the issue? Yes