mbourne1 wrote:I've just done a quick test, and it appears
...
So... just tell whoever you gave the word.me-at-spamgourmet.com address to that they can now use word.me-at-9ox.com. If you used the address to subscribe to a mailing list, web forum, or whatever, just change your registered address at that site (but in that case, you're unlikely to be saving anyone any typing).
When you want to create a SG address to put on the "To:" field of an email, and you already have a SG address with say spamgourmet.com ending, SG will not let you create a SG address with say 9ox.net ending.
So, it's not a question of telling someone to use this or that SG address: it's an inability to send email with the shorter SG address as the address of the sender.