Yahoo Mail

Dear Yahoo Support,

My name is John Smith, and I am writing to request confirmation of my recent account upgrade. I recently upgraded my Yahoo account: jsmith@yahoo.com to the premium plan and wanted to ensure that the upgrade has been successfully processed. 

Please confirm the account upgrade and provide any relevant details or instructions regarding the new features and benefits that come with the premium plan.

Thank you for your attention to this matter.

Sincerely,