Hi Piyush,
It is not possible to change the email address of the trailhead account. In this case, I suggest you to create a new trailhead account with the required email address. By using merge process , you can merge badges to the new account.
Please find the suggested solution below:
Create a new trailhead account with your personal E-mail address.
Merge the old account with the above newly created account. Here is how to do that –Trailhead Self-Service Account Merge.
Thanks
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This reply was modified 6 years, 8 months ago by
Laveena.