I setup my email account (imap/smtp) with tls and found it to be quite laggy, which I found irritating (but usable, just had to be patient).
I need to be able to ssh to my server, and being paranoid I can only do that through a vpn tunnel (openvpn).
I installed it from extras-devel and found it to be painless, just copied my config from my laptop across installed it into /etc/openvpn and to my surprise it worked first time, and I haven't had any battery drain or stability problems (any way I can help push this into extras?)

But then I thought as seen as it was so easy to setup, no stability issues and no noticeable drain on the battery, I'd keep it on and change my email to use the local address and not use tls for encryption.

Email application is now virtually instant response, so I'd recommend anyone to try this method if they can.
I'm not sure whether it's the tls in modest being crappy, or whether using openvpn with compression is making the difference - and pumping my username/password on the internet in plain text to see which one it is, isn't my idea of fun.