Hi dantonitowin,
Since you remember only part of the email address, please try Microsoft’s Forgotten username lookup first. Enter the recovery phone number or alternate email address that may have been linked to the account, then complete the security-code verification. Microsoft should then display a masked hint of the associated username.
For more information, please visit Find a forgotten Microsoft account username
If that does not identify the account, check any email inboxes you still have access to for Microsoft or Minecraft purchase receipts, security messages, or account notifications. These may show which email address was used.
Knowing the gamertag can be useful when providing account details, but the gamertag alone normally will not reveal the full Microsoft account email. Please also avoid posting the gamertag, partial email, phone number, or other account details publicly.
I hope this helps you locate the correct account. Thank you so much for your understanding.
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