ICLOUD to Android

Hello CASEY2,

Thank you for reaching out to Apple Support Communities.

Let's verify your iCloud Mail settings using this guide:

"iCloud Mail server settings

• iCloud Mail uses the IMAP and SMTP standards supported by most modern email client apps. iCloud Mail does not support POP.
• If you set up an account using iCloud System Preferences or macOS Mail in 10.7.4 or later, you won't see these settings because they're automatically configured.
• Refer to your email client app's documentation for information about how to use these settings.

IMAP information for the incoming iCloud Mail server

• Server name: imap.mail.me.com
• SSL Required: Yes
• If you see an error message when using SSL, try using TLS instead.
• Port: 993
• Username: This is usually the name of your iCloud Mail email address (for example, johnappleseed, not johnappleseed@icloud.com). If your email client app can't connect to iCloud Mail using just the name of your email address, try using the full address.
• Password: Generate an app-specific password.

SMTP information for the outgoing iCloud Mail server

• Server name: smtp.mail.me.com
• SSL Required: Yes
• If you see an error message when using SSL, try using TLS or STARTTLS instead.
• Port: 587
• SMTP Authentication Required: Yes
• Username: Your full iCloud Mail email address (for example, johnappleseed@icloud.com, not johnappleseed)
• Password: Use the app-specific password that you generated when you set up the incoming mail server."

More details can be found here: iCloud Mail server settings for other email client apps

If the issue persists, can you provide a few more details? Does this happen with multiple networks? Are you able to access your iCloud Mail on any other devices? Also, when did you first notice this?

Cheers!