This is the third post in what accidentally became a trilogy about getting my Outlook add-in to work on mobile. Post one made the add-in visible on the phone. Post two made it functional by falling back to a Microsoft Graph call when getAsFileAsync wasn’t there. And in that second post I wrote …

I’ve spent years writing CSOM code, and I keep seeing the same performance sins in every codebase I review. Including my own older code, which is the humbling part. For a long time, slow CSOM was just annoying. Users waited, someone made coffee, life went on. Then I sat down with a client to …

I recently built an Outlook add-in. It archives emails and attachments to SharePoint, lets you attach cloud files while composing, the works. It ran great on desktop, great in Outlook on the web. Then I opened Outlook on my phone to test it there. The add-in was gone. Not broken. Not throwing …