how to add forward one email to 3 mail box?

Did you try to make 3 forwarders ?

 

Simple but effective and the way to do it! :D

 

Sounds ok for a few recipients but what if there were lots more?

 

Same way, but maybe some one else could do that job for you

Or use a script

Cheers

 

In the "Add Forwarder" screen, just use a comma delimited list, like this:

david@email.com,lisa@email.com,john@email.com