Hey,
I build a task tracker and I want to send an email nonfiction to each team member that one of his tasks has been completed ( without enter each name the "to" automation field ) .
Thanks.
Hi @Elio-6b3d, happy to help! 
To send an email to a user that completed a task, in the "To" field of a notify automation, you would enter =[Name of Column of Assignee Contact]
This is how it would look:
In the Team Task Tracker template, I added an automation that will send an email when the "Status" column is changed to "Completed":
I then called the column that has the contact info for the assignee in the "To" field. In the template, this is stored in the "Name" column of the "Assignee" rowlink:
To further simplify, you could also make the "Assignee" column directly a contact format and enter the user's contact there. The formula would then just be "=[Assignee]":
Hope this helps! Let us know if you have any other questions. 
