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CloseReview for Mailbox Alert by Philoppe
Rated 5 out of 5 stars
Great addon. Many thanks. Iv've used it for many years. But sometimes, from few new versions, alerts disappear and I must restart Thunderbird for they come back.
This review is for a previous version of the add-on (0.27). This user has other reviews of this add-on.To create your own collections, you must have a Mozilla Add-ons account.