The mobile app does not have a select-all because it doesn't actually have access to all the messages in the label. It doesn't know what "all" is. You'll need to use the web-interface to do bulk deletion.
Original PosterLila Morris marked this as an answer
The mobile app does not have a select-all because it doesn't actually have access to all the messages in the label. It doesn't know what "all" is. You'll need to use the web-interface to do bulk deletion.
Original PosterLila Morris marked this as an answer
The destktop version IS the web interface. But if you're using a mobile device, you probably get the mobile web version which does not have all the same features.