I personally voted no, because i dont want to change my email, as i've got to many ppl on it and they all know me from that email.
But for other ppl who don't mind making a new account, you would have to make something so that you can copy you list of contacts from your previous email to the new sythe email, so that you can have all your friend again without having to add them one by one.
This would also help advertise sythe.org, as people will ask questions about it, once they see you have an email of it.
But for me its a no.