Is there "select all" functionality in the GMail app? I've previously used the default Email app on my CyanogenMod 7 EVO because I had an Exchange account at work. However, I switched jobs recently and my new place just uses GMail corporate accounts (which I enjoy). Since I don't have the Exchange account anymore, I'd like to move over to the GMail app because I prefer the UI and whatnot, but I can't for the life of me find any kind of "Select All" functionality in it.

The Email app allows me to do this from the options menu (Menu-&gt;Select All selects everything in the current folder). In GMail I noticed that if I select one or more items, then "Deselect All" becomes available in the options menu, but not "Select All". I've also tried various forms of long-pressing on messages, accounts, and folders to no avail.

Is there any way to do this in the GMail app, or am I just stuck without it? I searched the issue tracker and didn't find anything relevant, which surprised me a bit, to be honest. Obviously I can do this from a computer if I need to empty a folder/label, but I'd kind of like to retain the functionality on my phone, too. Am I missing some non-obvious (or perhaps even obvious) menu item somewhere?
I'm not sure exactly how you use the select all feature, but I think an effective way to mitigate your need for this is to go crazy with filters, labels, and the priority inbox.

Having your Gmail account sort your E-mail into highly specific labels for you and carefully tagging everything as either "important" or "not important" will keep the number of E-mails you see at any one time to a reasonable amount most of the time.

There are a ton of great tips in this article from LifeHacker that I've used both on the web interface and on my Gmail app.

Oh, and submit a feature request to Google. ;-)