Gmail is fantastic for mailing list subscriptions– subscribe to your favorite lists, filter them with labels, and you can both participate at your leisure and have a ready, personal archive when you need one that groups the vast majority of conversations properly.

Until now, the only thing that has been missing in this scenario is the ability to mark all unread messages in a label as being read. For instance, my PHP-Lists folder has more than 10,000 unread messages. The only way to mark past messages read was screen by screen– which takes a while even at 100 messages per clip.

No longer… now when you “select all” while viewing a label’s contents you will get a second option to select all conversation in the folder:

Gmail Select All Conversations

The last piece of the puzzle is in place.