Who Sent Emails on a Subject (I am responsible for) to my manager who left Company?

Question

I need help to find out who, on my behalf, sent email to my manager during my leave of absence. My manager is unavailable because he has now left company.

Without Login Credential of Manager who left Company, but with following criterion:

1. Mailbox owner is previously my manager (as per Outlook Organization)
2. Known Email Subject
3. Known Month of Email Sent

Is it possible to get email address of sender(s)?

Without login credentials of Manager who left company, is it possible to know the Senders of Emails (on certain Subject) to him/her?

BACKGROUND

Every month, I submit Report combining content of emails from other Departments by:

1. eMail as attachment to my manager
2. share attachment in above step 1 to a network location.

During my leave of absence, I received emails from other Departments but from my history of missing email, I am uncertain if there are subsequent emails to combine into a Submittal.

On the other hand, within my department, someone else did step 1 on my behalf but did not update me by any means (no email nor Team).

I am now faced with Step 2 without its attachment. I need help to contact the Senders of Report to my manager to get the attachment.

Answer 1

Hi @Sunny Wong ，

Without login credentials of Manager who left company, is it possible to know the Senders of Emails (on certain Subject) to him/her?

Not possible from the Outlook client side as an end-user, but it's possible from the administrator side if your mailbox is hosted on either Exchange server or Exchange Online.

So if you cannot find out the sender by other means, such as asking within your team, you can contact your email administrator for further assistance and, if necessary, provide them with the information below:

-Sample command for On-premises Exchange server like Exchange 2019:

Get-TransportService|Get-MessageTrackingLog -MessageSubject "ReportTest" -Start "12/01/2023 1:00AM" -End "12/13/2023 5:00PM " |select timestamp,sender,recipients,messagesubject |sort-object Timestamp

-Sample command for Exchange Online:
(Require connection to Exchange Online PowerShell beforehand.)

Get-MessageTrace -StartDate (Get-Date).AddDays(-10) -EndDate (Get-Date) | Where {$_.Subject -eq "ReportTest"}

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