User:Weeklyd3/scripts/resetwatchlist

This is a tool that resets the notification flags for all pages on your watchlist. Because sometimes watchlist e-mails contain this: There will be no other notifications in case of further activity unless you visit this page while logged in. You could also reset the notification flags for all your watched pages on your watchlist. ...you will not get notifications unless you visit the page. There is also no link to reset all the notification flags.

Workaround
This script gets all the pages on your watchlist, and visits every one while logged in. This resets all notification flags.