Outlook.com'da e-posta gönderme, alma ve düzenleme
Hey there! Nice to meet you!
Based on your description and since you are unable to add your old email (provided that the email is already inactive and closed), just to confirm, is this email a Microsoft domain?
If yes, I'm afraid it is no longer possible to use it again. According to the official Microsoft website: https://support.microsoft.com/office/add-or-remove-an-email-alias-in-outlook-com-459b1989-356d-40fa-a689-8f285b13f1f2
"If you remove an alias (or deleted due to inactivity) that's an email address from a Microsoft domain (like @hotmail.com, @live.com, @outlook.com, or @msn.com), you're permanently deleting the alias and it can't be associated with any Microsoft account again. "
Thank you for your kindness and understanding! Please feel free to let me know if you need anything else.
Best regards,
Darhyl