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Add extra features and styles to make Thunderbird your own.

Next Unread Thread (Mark All Read) 1.4

Adds a Thread button, marks current thread or conversation as read and moves to the next unread message

The developer of this add-on asks that you help support its continued development by making a small contribution.

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About this Add-on

Adds a Thread button, marks current thread or conversation as read and moves to the next unread message

ESMified the add-on.
Set minimum version to Thunderbird 115.0.
Set maximum version to Thunderbird 136.*.