How To Add Custom Filters In ProtonMail

ProtonMail can be configured to auto-block senders based on their email addresses or depending on the message content and attachments. This can be done by using the Filters feature. To access it, click on SETTINGS. Then select Filters. Blocking based on just the sender’s email: To directly block a specific sender, you can blacklist that specific email address. To do that, scroll down to the Spam...