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About this Add-on
The add-on developed by the email marketing provider is based on the “List-Unsubscribe” email header that is already being implemented by Google Mail and Windows Live Hotmail to offer this kind of user-friendly unsubscribe procedure to their customers.
The email marketing expert supports a centralised unsubscribe function which allows recipients to cancel their subscriptions in the user interface of the email program - without having to search for the unsubscribe link within the newsletter.
In addition to supporting this centralised unsubscribe procedure in the webmail programs Windows Live Hotmail and Google Mail, Inxmail has gone one step further. The "Unsubscribe from mailing lists" add-on also makes fair email marketing available for the email client Mozilla Thunderbird.
As requirement for this add-on the newsletter mailer must be support this function by adding the following header to their mail: List-Unsubscribe: <mailto:email@example.com?subject=XXXX>.
This add-on is an open source project on github. Feel free to contribute.