Is it possible to create an Outlook 365 add-in that monitors when the user selects an e-mail message and performs actions on the selected e-mail message? (I need to develop a custom add-in that, for example, displays notification when the user selects an e-mail message that contains external links and removes these external links from the e-mail message.) If it is possible, could you please tell me which technologies (Outlook Rest API? Outlook Web Add-in? Microsoft Flow custom action?) I can use to implement this functionality? (I can easily implement this functionality, using VSTO, for desktop Outlook, but I am new to Office 365 development.) Thank you.
1 Answers
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Doing something when the user selects the message isn't currently possible. The closest you could get is with a web add-in: the add-in's buttons would light up when the message is selected. However, in order for the add-in to do anything, the user would need to click the button.
You could potentially achieve the same result by listening for notifications on the user's mailbox, and as new mail arrives, processing and removing those links using the REST API.
