Hi @Bulent Unal , this unfortunately cannot be done with the UI, but it can be done with the graph API. In order to do this with the graph API, you can do something like this:
PATCH: https://graph.microsoft.com/v1.0/users/{UUID}
{
"identities": [
{
"signInType": "emailAddress",
"issuer": "xxxx.onmicrosoft.com",
"issuerAssignedId": "{new email address}"
}
]
}
I hope this helps. Please let me know if you have any questions.
If this answer helped you, please mark it as "verified" so other users may reference it.
Thank you,
James