In theory, if you subscribe to all music which you possess, you can use the "Edits for your subscriptions" notification emails as TODOs which tell you to update the tags of the files with Picard.

However, with the current implementation, the notification mails will NOT contain the list of affected subscriptions.
Instead, it will link to the "Edits for subscribed entities" page of MusicBrainz. This list will only contain the edits while they are not accepted yet. After they have been accepted, they are gone.

And Picard won't tag the releases with not-accepted edits so as soon as you get the E-Mail you cannot update your tags with Picard yet, and as soon as Picard would apply the edits, they are not visible in the "Edits for subscribed entities" page anymore.

The solution is to list the affected subscriptions in the notification E-Mail so one can keep the mail and update his files as soon as the edits are accepted.