'Outlook "Web Add-in" not appearing on Shared Mailbox, despite SupportsSharedFolders= True
we have this addin: https://appsource.microsoft.com/en-us/product/office/WA200000060 This one on the store is working as expected.
As we need to support sharedinbox, we modified the manifest and we added:
<SupportsSharedFolders>true</SupportsSharedFolders>
After the modification, we submited the manifest through the Exchange admin portal- integrated apps for all users
we assigned the following permission to the users:
- application Mail.Read
- Application Mail.ReadBasic
- Application Mail.ReadWrite
- Org Custom Apps
- Org Marketplace Apps this permissions were assigned to my personal user and to the shared mailbox
There are 2 ways to open the shared folder 1- Clicking on your user profile, and select "Open another mailbox" 2- Right-clicking on your Folders, and select "Add shared mailbox"
for option 1: if we open the shared inbox on the online access (OWA) we can see the addin but when you click on it, it does not perform any action, addin does not get triggered. for option 2: addin is not displayed when selecting an email
If we open the shared inbox on the Outlook application, the addin is not visible
we also tested having a dedicated license to the shared inbox but didnt affect the result
Solution 1:[1]
OWA supports add-ins in shared folders and does not support the same on shared mailboxes. Win32 outlook supports both.
Solution 2:[2]
Which version of Outlook was this, and do you / your user use Outlook online?
The capability to work on Shared Mailboxes / Folders, is limited to Outlook versions that support Requirement Set 1.8 (https://docs.microsoft.com/en-us/office/dev/add-ins/outlook/delegate-access?tabs=windows); which basically means Outlook must be Outlook 365 (see https://docs.microsoft.com/en-us/javascript/api/requirement-sets/outlook/outlook-api-requirement-sets?view=common-js-preview)
Solution 3:[3]
The Outlook Add-in team says that support for shared mailbox is not available, yet in this support document it says that OWS supports API requirement set 1.8 which if I understood correctly is the requirment for shared Mailbox:
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Jean-François Fabre |
| Solution 2 | Brendan May |
| Solution 3 | Brendan May |