Review for ThunderBirthDay by Toni Teuer
Rated 4 out of 5 stars
Nice tool! Unfortunately you can only extract birthdays from either a single address book or all address books into one calendar. Would be great if you could also extract from X selected address books into a single calendar.
This review is for a previous version of the add-on (0.3.3).To create your own collections, you must have a Mozilla Add-ons account.