Ah ok thanks. I always use IMAP so never noticed this new(?) feature

These mail consolidation services is just another vector for your email passwords to get stolen - whether maliciously or unintentionally.

It should be reasonably secure. It does use SSL to connect to Gmail, and the connection between your phone and Nokia Messaging is encrypted as well

It is secure, but kureyon is right about number of possible attack vectors.

Now instead of someone targeting
- your device
- the connection between your device and the tower
- your service provider
- the connection between the tower and the Google server
- Google

They can target
- your device
- the connection between your device and the tower
- your service provider
- the connection between the tower and the Nokia server
- Nokia
- the connection between Nokia's server to Google's server
- Google

Granted the likelihood is unlikely.

this is okay :

http://talk.maemo.org/showpost.php?p=722457&postcount=3

Man in the middle attack on SSL in real time is extremely hard to pull off.. that's the whole point of using SSL that all that anyone who hacks the connection between the tower and your phone, your service provider and the tower and google server would see is an encrypted stream of data, as the encryption is happening between Google and your phone in the application layer. So while it might increase the attack vectors, it is unlikely to make any change in the security of your overall connection. It is much more likely that someone hacks your computer, installs a keylogger and steals your password.

My point was more that the number of possible attack vectors do increase. Though from a security standpoint your right, it's not much to worry about due to things like SSL.

It's also extremely unlikely that someone does social engineering on Nokia or Google to get your password. I think they'd have much higher targets if someone could pull something like that off.