ExtendIMAPFilters 1.0.1
by thunderpec
This addon extends filtering to read messages downloaded during an IMAP synchronization (bug 308148)
About this Add-on
This functionality, introduced in Thunderbird 45, is bounded to a new hidden preference, mail.imap.filter_on_new, introduced to solve bug 308148.
The addon enables the preference at its installation and disables it on uninstalling, by resetting the preference value at its default (false).