June 20, 2013, 1:14 PM — Here's how you can select multiple conversations in Gmail for Android.
There are two ways to do this:
1. Long press on the conversation you want to select.
2. Press on each contact image.
Either way will let you select multiple messages all at once. This can be useful if you need to mark messages read, delete them or archive them in Gmail.
Read more: Pocketables