Developer reply by H.Ogi
Rated 5 out of 5 stars
With 0.9.26 I am not able to send an email any more! Using 0.9.25 everything is fine!
Update: working fine again with 0.9.27! Tnx!
Your post is recoverd. Now debugging.
[update 2013/05/11]
Fixed in v0.9.27b1. It is available at my homepage.
To create your own collections, you must have a Mozilla Add-ons account.