Cannot send mail the sender address was invalid ios 15

The frustration of not being able to send mail!

The error "The sender address was invalid" on iOS 15 can occur due to various reasons. Here are some troubleshooting steps to help you resolve the issue:

  1. Check your email address: Ensure that your email address is correct and valid. Double-check the address for any typos or incorrect characters.
  2. Verify your email account settings: Go to Settings > [your email account] > Account > Advanced. Make sure that the "Sender Address" is set to your actual email address.
  3. Check your email account password: Ensure that your email account password is correct and up-to-date. If you've recently changed your password, try updating it in your iOS device's settings.
  4. Disable and re-enable your email account: Go to Settings > [your email account] > Account > toggle off "Mail" and then toggle it back on. This may reset your email account settings.
  5. Check for email account issues: If you're using a third-party email service, check their website or app for any known issues or maintenance notifications.
  6. Reset your email account on your iOS device: Go to Settings > [your email account] > Account > Reset. This will reset your email account settings to their default values.
  7. Check for conflicts with other email accounts: If you have multiple email accounts set up on your iOS device, try removing or disabling other accounts to see if it resolves the issue.
  8. Update your iOS device: Ensure that your iOS device is running the latest version. Sometimes, updating your device can resolve issues like this.
  9. Try sending a test email: Send a test email to yourself or a trusted contact to see if the issue is specific to a particular recipient or email content.
  10. Contact your email provider: If none of the above steps resolve the issue, reach out to your email provider's support team for further assistance. They may be able to help you troubleshoot the issue or provide additional guidance.

By following these steps, you should be able to resolve the "The sender address was invalid" error on your iOS 15 device and start sending emails again.