I have just moved to Sweden for my new job and phoned the people at fastchat to get my account billed in Euros. Apparently they are not able to bill in Euros yet and said that i can continue to use it for free until they do.
This is not stated on their website but said if people from outside of the UK want to use their service they have to phone customer services for a free account rather than signing up through the site.
Get your free messages whilst they get their billing system up and running.