About this Add-on
The user choose the tag protecting messages and if he will be asked for deletion or if the messages are definitely undeletable (with a warning when trying or not).
To create your own collections, you must have a Mozilla Add-ons account.
Some add-ons ask for permission to perform certain functions. Since you’re in control of your Firefox, the choice to grant or deny these requests is yours.
Please note this add-on uses legacy technology, which gives it access to all browser functions and data without requesting your permission.