Rated 4 out of 5 stars

Excellent :)
One suggestion: create a new task (and link it to a mail) by drag&dropping a piece of the mail's body from the message pane to the task pane (and putting by default that selected text in the task description, and the title of the mail in the task title).
Also, when using the right menu entry "Link to a new task" on a message where some text has already been selected, do the same as above.
Would easily allow to create multiple tasks from a single global email...
Thanks :)

This review is for a previous version of the add-on (1.3).  This user has other reviews of this add-on.