The biggest problem is that E-mail demography tends to be broader than many of the other services.
Some of E-mail users are very conservative and specific about how they handle their E-mail. (Some of which are very risky behavior, which I actually tried to correct by explaining why that's bad idea, but ultmately given up...)
There are demography between novice and expert. Novices tend to not care about changes so much; some even won't notice changes, as long as features are somehow accessible. Experts may have some particular tastes, but they'd be quick to find solutions to change things around when they have to. But people in between tend to be very vocal about any changes and they can't (or not willing) to find and accept "solutions" -- they will be the first one to complain when UI elements like buttons shift around the screen. Unfortunately, as universal E-mail gets, a lot of E-mail users fall under category. (Though, in different ways, "experts" can be very particular about how they handle things can be very stubborn when there's no good reason presented to change -- but it's a bit different context.)
I can't even imagine how tough it will be to migrate some of people I know to anything other than what they are used to.
Some of E-mail users are very conservative and specific about how they handle their E-mail. (Some of which are very risky behavior, which I actually tried to correct by explaining why that's bad idea, but ultmately given up...)
There are demography between novice and expert. Novices tend to not care about changes so much; some even won't notice changes, as long as features are somehow accessible. Experts may have some particular tastes, but they'd be quick to find solutions to change things around when they have to. But people in between tend to be very vocal about any changes and they can't (or not willing) to find and accept "solutions" -- they will be the first one to complain when UI elements like buttons shift around the screen. Unfortunately, as universal E-mail gets, a lot of E-mail users fall under category. (Though, in different ways, "experts" can be very particular about how they handle things can be very stubborn when there's no good reason presented to change -- but it's a bit different context.)
I can't even imagine how tough it will be to migrate some of people I know to anything other than what they are used to.