Issue Summary

Receive email notifications only from actions you marked on your Account Settings page and block any mandatory e-mails as stated here. 

Steps to Reproduce

Select which notifications you receive when ‘watching’ a card, list, or board.

Expected Results

Find an option to mark and block unavoidable emails, which is mentioned here.

Actual Results

There is no option to opt out of receiving mandatory emails.

Current Workarounds

Try setting up a filter in your email (like Gmail's filter feature) to categorize Trello notification emails. This way, you can manage them separately without receiving constant alerts.