said by PX Eliezer70:
When a small upstart is bought by a larger and more established company (which Opera is by now) things usually suffer.
I've been a paying member of Fastmail since 2004... I have been nothing but thrilled with their service.. I have my domain name attached to my account, which is why Im a paying member -- but that gives me a lot of flexibility with WebDAV, instant photo album sites, as well as the ability to host my actual www address with Hostway while my sub-sites sit with Fastmail.
Granted, I am using it for much more than email -- but, I have not noticed a single difference since Opera bought them, other than the Opera logo on their webmail page, which I rarely use.
FWIW -- Opera purchased Fastmail in April 2010... It didn't "just" happen.