Issues: https://github.com/gitladen7/protonmail-webextension/issues Source code: https://github.com/gitladen7/protonmail-webextension General Settings: Fetch interval: Select how often the extension will check for new emails. Settings: Persist session: Check it to keep the sessions in browser memory. Persist session even if browser is closed: Check it to save the sessions to disk. WARNING: Your mailbox password will be written to your hard drive. Show unread count badge: A badge will show on the extension icon with the number of unread emails on the INBOX. Show notifications on new emails: If checked then the extension will show a notification when you receive an email. Enable peeking: If checked then you will be able to see a list of your inbox unread emails in the extension itself.