Email domains that have multiple names

Do you know if there are any email domains, which have a similar issue as gmail, where email addresses can show up as gmail or googlemail?

I've been looking all over the internet for examples, but I'm unable to locate any...

Thanks

J

Hi there,

I think there are multiple examples, and they depend on the multiple domains a company has for redirecting to same website or ip address. For example: If there is a company name Alpha Beta Charlie and they have website www.alphabetacharlie.com

then, someone@abc.com - might be given to users and
someone@alphabetacharlie.com - might be given to employees as exchange mail.

Thanks,