My Outlook add-in has a handful of user preferences: which tab to open by default, language, a “don’t show this tip again” flag. Small stuff. A single JSON blob. So where do you put it? localStorage is per-device, per-browser, and mobile WebViews evict it whenever they feel like …

In my last post I showed how declaring a low Mailbox requirement set in the manifest got my Outlook add-in to show up on mobile. Great. Button’s there, task pane opens, everything looks alive. Then the user taps “Archive to SharePoint” and the whole feature stands on one API: …

The Problem: When Parallel Programming Backfires If you’ve ever optimized your C# API calls with parallel programming, you might know this story. Your client wants faster performance. You run multiple API requests in parallel. Locally, everything flies — especially late at night when traffic is low. …