Extracting emails with top level domains from a file

[Kelvin789]

I'm trying to extract only emails with top level domains from a file using a bash script. For example: test@email.com or test@email.uk would be picked up but test@email.co.u k would not be picked up. This is what I've tried to no avail:

rep -E -o '[a-zA-Z0-9._-]+@[a-zA-Z0-9_-]+\.[a-zA-Z0-9]{2,}' myfile.html

[SioSio]

grep -E "[-_a-zA-Z0-9\.+]+@[-a-zA-Z0-9\.]+" myfile.html