Mail setup: How to set how often Mail checks for new messages If you have multiple email accounts, you can repeat the process to see them all in the Mail app. Click the checkmark next to each app you'd like to use with this account.If you have an email address with a domain other than what's provided (like a school or work email address that's not based in any of the big providers), click Other Mail Account. Click an email provider based on what type of email account you have.The first step to using the Mail app for Mac is to set up your email account to start receiving email in the Mail app. Mail setup: How to set up an email account
