Amazon WorkMail also supports Microsoft Exchange ActiveSync for iOS devices. Follow these steps to connect your account:
On your iOS device, go to Settings.
Scroll down and select Mail.
Choose Accounts > Add Account > Microsoft Exchange.
On iOS 11 and later, enter your WorkMail email address and a description. Select Next and log in by entering your password.
On versions prior to iOS 11, enter your WorkMail email, password, and a description for the account, then select Next.
If automatic setup fails, you will be prompted to manually enter the server information, such as the Exchange server name and the AWS endpoint for your region.
Endpoints by Region:
U.S. West (Oregon): mobile.mail.us-west-2.awsapps.com
U.S. East (Northern Virginia): mobile.mail.us-east-1.awsapps.com
Europe (Ireland): mobile.mail.eu-west-1.awsapps.com