The latest entry in the official Google Mobile Blog start off by saying: Sometimes when I’m using Gmail on my phone, I delete a message by mistake or label it incorrectly. Google is obviously watching what we are doing because that is certainly something I do all too often. And, while using Google’s Gmail app for Android, I don’t know how many times I’ve muted an email instead of pressing “Mark unread” or the “More” button next to it.
In Google’s effort to move all of us off of native apps on to their web apps (think Chrome OS), you can undo “archive”, “delete”, “add or remove a label”, or move a messasge/conversation if you use Google’s Gmail mobile web interface (they call it a “mobile web app”).
This new Gmail mobile web app can be used with the web browsers on Android or iOS (iPhone, iPad, iPod touch) devices.