Review for FileLink Provider for Box by Tomas Adamec
Rated 2 out of 5 stars
Unreliable. Often reports "unable to upload", need to restart Thunderbird. But for larger files, sometimes even that doesn't help and it simply refuses to upload. Sometimes it also says "unable to upload", doesn't create a link, but when I look in Box, the file is uploaded. Thus: unreliable.
To create your own collections, you must have a Mozilla Add-ons account.