Got some questions about /me endpoint What are the possible reasons as to why mail will be undefined? What can be done to get a value in the mail property? If it cannot be filled, what is a viable alternative? I've checked userPrincipalName and it looks like an email, but I've noticed that for some users, it does not match the mail property which means it's not a reliable alternative. Is this correct? Thanks.

Simply put, not every user object within Azure AD has an email address. null is a valid value for the mail property. And userPrincipalName is a different thing altogether, not necessarily related to the mail property.

/me endpoint sometimes has blank 'mail' property

Leo B 6

Got some questions about /me endpoint

What are the possible reasons as to why mail will be undefined?
What can be done to get a value in the mail property?
If it cannot be filled, what is a viable alternative?
I've checked userPrincipalName and it looks like an email, but I've noticed that for some users, it does not match the mail property which means it's not a reliable alternative. Is this correct?

Thanks.

Zehui Yao_MSFT 5,871 Reputation points

2022-12-06T08:25:17.547+00:00

Hi @Leo B , have you set values in the user interface of AD portal?
Leo B 6 Reputation points

2022-12-06T23:52:56.033+00:00

Thank you. If I want users to have the mail value, can I then just ask them to do this? Is there another way to update their mail values or is it only editable within Azure AD? Thanks!
Zehui Yao_MSFT 5,871 Reputation points

2022-12-07T02:52:20.287+00:00

Hi, you can also use microsoft graph api update user endpoint to edit user mail values.
Zehui Yao_MSFT 5,871 Reputation points

2022-12-12T07:18:41.817+00:00

Hi @Leo B , did the above reply help you?

1 answer

Vasil Michev 112K Reputation points MVP

2022-12-06T06:49:26.18+00:00

Simply put, not every user object within Azure AD has an email address. null is a valid value for the mail property. And userPrincipalName is a different thing altogether, not necessarily related to the mail property.
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1 person found this answer helpful.
Leo B 6 Reputation points

2022-12-06T23:51:31.007+00:00

Thank you for the clarification. Is the mail value updateable only via the Azure AD (the process mentioned by @Zehui Yao_MSFT ) or is it editable somewhere else? The system I'm working on processes many users so I'm not sure if they have access to their Azure AD, if I end up suggesting they update their mail values there.

Zehui Yao_MSFT 5,871 Reputation points

2022-12-31T06:54:39.883+00:00

Hi @Vasil Michev , Happy holidays! Do you have any more suggestions on this issue? Thank you so much for your assistance.
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