...

Launch one of your Google apps.   Setup is the same for both of them.

At the sign-in page, Choose "Google", and enter your email address at swarthmore.edu.

...

On the next page, enter your Swarthmore username and password.

Choose your method for Duo authentication.

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That's it!   You are done.

Built-in Apple Mail and Calendar

The second option for mail and calendar are the built-in iOS apps.     This solution works with Google, but doesn't integrate as well with search features or multiple shared calendars in Google.

Step By Step Instructions (Apple Mail and Calendar)

1. Open Settings and scroll down to "Mail, Contacts, Calendars".
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2. Select "Add Account".
3. Choose the Google option to add your account.
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4. Sign in.
5. Enter your Swarthmore email address.
6. Leave the password field blank.
7. Click Sign In.
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8. You will be redirected to login.swarthmore.edu.
9. Enter your Swarthmore username and password.
10. Click "Login".
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11. Allow iOS to access your email, calendar, and contacts. After you click "Allow", your Swarthmore mail will show up in the Mail app and your Swarthmore calendar will show up in the Calendar app.

   Your email and/or calendar will start syncing to your iOS apps.