With the plugin chrome you can create a task ctrl+q and attaching an email from gmail.
How can I attach the email when I'm editing a task ?
thanks in advance.
unfortunately that's not possible right now. You can edit any task that's linking to an email, though. To do so, add an email as a task and then simply click on it outside of the linked text area or choose the "Edit task" option from the gear icon menu. You can add additional text before or after the link.