Login to apple mail on android
How do I login my icloud account on android device?
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To use an Android mail app with iCloud email you will need to turn on two-factor authentication for your Apple ID if you haven't already and you will need to use an app-specific password instead of your normal Apple ID password. See information in Two-factor authentication for Apple ID - Apple Support and Using app-specific passwords - Apple Support
The following also may help: Mail server settings for iCloud email clients - Apple Support
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https://www.androidcentral.com/how-set-your-icloud-email-account-android