I do printing and want to add correspondance to a task that is created.
Unfortunately, you can't attach an email to an existing task, but you can create a task from an email. To do so, simply forward the message to the unique email address of one of your Todoist projects. The subject of the message will become the task name and the content of the email - a task note.
For detailed instructions please enter a project, and choose "Email tasks to this project" from the "Tasks actions" gear icon at the top of the list.
Alternatively, you can use our browser or email client plugins which will allow you to add a link to a message, however this method will not add the content of the message to the task.