How to set "send-as" permissions on a created email box

[oliwa66]

Hi, i'd like to know if the graph api provides any endpoint to set the permissions for a newly created azure ad user to allow "send-as" permissions.

the user has an email box and when i go into portal.microsoft.com/#users, click on the user, then e-mail, then "send-as" permissions (in german this is "Senden als"-Berechtigungen, i translated it by myself to english so maybe its a bit different), then i can add a permission.

I would like to automate that process and add one of those permissions, but i cant find an endpoint for it. anyone an idea?

[#2]

No, no Graph API support for delegating Send As permissions, nor any other Exchange admin action for that matter. Use PowerShell.

[#3]

what a pity, do i have to use powershell also when i want to change e.g. the calendar of a user so it shows calender weeks, changing language and time, share a calendar etc.?
if possible, i'd like to get rid of powershell for some reasons (because of incompatibility issues version 5 vs 7, my application is python and i dont like executing .ps1 files, etc.)

[#4]

"Owner" actions can (mostly) be performed via the Graph API, but delegating Send As is considered an admin operation, and there is zero support for such in the Graph currently :\

[#5]

is it still an owner-action when i do that as admin for a user account, e.g. change the calendar to display weeks different, set timezone, language etc.?
if there is a graph api endpoint that i can access with my admin creds and change that for the user, would be great

[#6]

Have you looked at https://learn.microsoft.com/en-us/graph/api/user-update-mailboxsettings?view=graph-rest-1.0&tabs=htt...

[#7]

@Vasil Michev 

Yes, i found some things i can configure, but e.g. the start day of the week was not there 

[#8]

@Vasil Michev i tested it with:

Set-MailboxCalendarFolder -PublishEnabled $true -Identity email address removed for privacy reasons:\Calendar -DetailLevel FullDetails -Confirm:$false

Unfortunately i get an error that the policy blocks anonymous sharing, which is of course also not what i want. I assume somehow i have to again use the "Default" user to share access to the calendar company wide. Can you give me a hint how to achieve that?

[#9]

Publishing is generally intended for external sharing, if you want to share a Calendar company-wide, adjust the permissions on the Default principal entry.

Set-MailboxFolderPermission -Identity user:\Calendar -User Default -AccessRights LimitedDetails