Configuring the Bridge to work with Apple Mail can be done in a few steps, outlined below:
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2. Install Profile
7. Mailbox Behaviors
To configure the bridge with Apple Mail, enter your ProtonMail credentials into the bridge and click on the Configure Apple Mail button at the bottom left of the bridge account settings screen.
This should prompt your System Preferences to open and you will be prompted to Install "ProtonMail" as a profile. Press Continue here.
You may be prompted to accept our SSL certificate. Click Continue to proceed.
Enter an account description and a full name with which to identify your account. Press Install once these fields have been entered.
Open the Apple Mail application. Your newly created account will be present in the sidebar, and your ProtonMail emails will begin downloading.
Apple Mail requires configuring your draft settings manually. Click the Mail menu (top of the screen) and select Preferences.
Choose the Accounts menu at the top and then your ProtonMail account on the left. Next, click the Mailbox Behaviors sub menu.
Go to Mail -> Preferences -> Accounts -> [Account] -> Drafts Mailbox.
For the Drafts Mailbox option, choose Drafts (On My Mac). Note: Drafts are saved on your local device only. If you create a draft in Apple Mail on your laptop it will only be saved and accessible on that device.
If you would like to disable your client spam filters and rely soley on your ProtonMail spam filters make sure junk mail filtering is unchecked.
However, keeping your client’s spam filters enabled will offer the advantage of additional spam filtering that is able to utilize the text of all of your messages and will add detected spam senders to your ProtonMail blacklist.
Note: In separate addresses mode every IMAP account that you set up with the Bridge is address-specific, and will only be able to send/receive emails from the address it is set up with. You can add any number of addresses to Apple Mail but wait for one address to download before adding another.
Success! Apple Mail is now ready to use the Bridge!