We're not an entire webmail service (just mail scheduling), but the Momentomail ( http://www.kymalabs.com) signup process was so short we were getting complaints that people didn't know what was happening.

1. Click login 2. If you have a google account hit "allow" 3. Done.

There's something to be said about keeping to user's expectations about common processes. Due to simply not needing it at this point in our product, our process is still "weird" compared to a normal signup process, but seems to have a much higher success rate in getting people to work through the process.

Hopefully opera will iterate a little and resolve this.