Simple email verify?

Need to know a quick way of doing a basic verify of an email thats inputed via a custom page. By basic I mean checking for an "@" and also a ".". Any other checks would be great.

Thanks,

!include wordfind.nsh
!insertmacro WordFind2x

# email address in $0
${WordFind2x} "$0" "@" "." "E+1" $1
IfErrors badformat
...
badformat:
...