You aren’t required to provide a notification/reset email address, but we strongly encourage you to. Once you’ve started using Proton Mail, we’ll use your alternate email address to communicate with you under the following circumstances:
- To communicate with you in the event that you can’t log in to Proton Mail
- To help you if you’ve forgotten your Login or Mailbox password
- To notify you that you have a new message in your Proton Mail account
Learn how to change your notification/reset email address(new window).