I've decided to try out multiboxing on US-Sargeras from EU, so I've set up a Starter Edition account, and upgraded with the $10 battlechest to Standard Edition.
I couldn't invite to group, or send out RAF, so I upgraded to MoP 10-day trial and was rewarded with the RAF icon in the Friends tab.

Now when I enter an email address and press Send I get the confirmation that the mail has been sent - but nothing appears at the recipient. Tried a couple of different mail accounts - started with the one linked to my battlenet, but no luck.

Anyone done this recently from a Starter Edition account?