Help Locate Past Email Contact

I need to reconnect with a woman named Cristina that I used to correspond with on email from an old account I no longer control. My main objective is to reach the right support channels and present the strongest possible case so I can either recover the original inbox or at least retrieve the conversation thread.

Here is what I already have to work with: her email address, several of the exact subject lines we exchanged, and the rough dates of each message. What I am missing is the know-how and the wording to approach the relevant support teams efficiently.

If you understand how major email providers handle account-recovery and data-request tickets, I would like you to:

• Design a clear, step-by-step plan that tells me which support portals or escalation paths to follow.

• Draft the actual messages or forms I should submit, making sure the details I hold (address, subjects, dates) are positioned for maximum effect.

• Offer practical guidance on safeguarding any newly recovered data and preventing future lockouts.

The job is finished once I have a concise action plan and ready-to-send support requests that give me the best possible chance of finding Cristina or recovering our email history.