'Can I Access Outlook Add-Ins Through Outlook.Application in my Code?
I'm using Outlook.Application to send emails from my C# code.
I have this Voltage Encryption Add-In which allows you to "Send Secure" a message rather than the normal Send.
Can I use this Send Secure in my code? Is there some way to access add-ins?
I can loop through Microsoft.Office.Core.COMAddIns and see that it is there but cannot really do anything with these Add-Ins. Just see basic info about them.
There is an interface exposed by the VoltageAdddIn dll which has the "SendSecureButtonClicked(object ribbonControl)" method. Maybe I can use this somehow?
Solution 1:[1]
If the addin designer did not explicitly give you that ability, you can't. You can access COM addins through the Application.COMAddins collection (you can play with it in OutlookSpy - I am its author - click Application button, select COMAddins property, click Browse, go to the IEnumVariant tab)
If addin decides to expose its objects for external consumption, COMAddin.Object property will be != null.
Sources
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Source: Stack Overflow
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