Contacting Twitter About a Deceased User
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Twitter clearly states that it will not give you access to a deceased user’s account regardless of your relationship to the user, but it will accept requests to deactivate the user’s account from either an immediate family member or a person authorized to act on the behalf of the estate.
To do this, Twitter needs you to provide the deceased person’s username, a copy of their death certificate, a copy of your government-issued ID and a signed statement with a list of additionally required information, which you can find at this Twitter support link.
To complete the request, you must send the documentation either by fax or mail so that Twitter can verify it and deactivate the account.
