Cannot send mail the sender address was invalid iphone 13

Frustrating!

The error "Cannot send mail, the sender address was invalid" on an iPhone 13 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. Try sending an email from a different device or app to verify if the issue is specific to your iPhone.
  2. Verify your email account settings: Go to Settings > [your email account] > Account, and check if your email account settings are correct. Make sure your username, password, and server settings are accurate.
  3. Check your email account status: Ensure that your email account is active and not suspended or blocked. You can check your email provider's website or contact their support team to verify.
  4. Reset your email account password: If you've recently changed your email account password, try resetting it to the original password or a new one. This might resolve any authentication issues.
  5. Check for email account issues: If you're using a third-party email client like Microsoft Outlook or Gmail, try checking their servers for any issues. You can do this by visiting their website or contacting their support team.
  6. Disable and re-enable your email account: Go to Settings > [your email account] > Account, and toggle off the switch next to "Account". Wait for a few seconds and then toggle it back on. This might resolve any connectivity issues.
  7. Clear email cache and data: Go to Settings > [your email account] > Storage & iCloud Usage > Manage Storage > Email, and clear the cache and data. This might help resolve any issues with your email client.
  8. Check for iOS updates: Ensure that your iPhone is running the latest version of iOS. Go to Settings > General > Software Update to check for updates.
  9. Reset network settings: Go to Settings > General > Reset, and tap "Reset network settings". This will reset your network settings to their default values, which might resolve any connectivity issues.
  10. Contact your email provider's support: If none of the above steps resolve the issue, contact 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 "Cannot send mail, the sender address was invalid" error on your iPhone 13.