Check the Trash, Deleted Items, or Bin folder
Restore the email from the deleted folder
Use the email provider’s recovery or “recover deleted items” option
Search archived folders and all mail folders
Check if the email was moved by a filter or rule
Restore from a backup if one exists
Contact your email provider’s support team
Check connected devices for a synced copy
Use account recovery tools if the account was compromised
Ask the sender to resend the email