[TomMasz]

I was going to say the exact same thing. The only thing you might be able to count on is GMail, and I'm not sure even it won't go away someday.

[bfivyvysj]

Fastmail if you like shiny. If you use a client anyway just purelymail.

[coffeefirst]

I would have said the same about search, but, well…

[pisipisipisi]

I can replace everything, except google earth / streetview.