Gotchas – Microsoft Graph/Outlook REST API throttling, best practices

In recent times, I was working with this customer where they make Graph API calls, Say, GET https://graph.microsoft.com/v1.0/users/YYY@XXX.onmicrosoft.com/mailFolders/inbox/messages?$skip=0&$top=30&$select=bodypreview,categories,conversationid,from,hasattachments,id,isdraft,isread,lastmodifieddatetime,parentfolderid,receiveddatetime,replyto,sender,sentdatetime,subject,torecipients and few other GET (read operations of mail folders/single item handles specifically) and few POST/PATCH calls. They noticed, once the throttling threshold is exceeded, Microsoft Graph limits any further requests from that client for a period of…


Outlook 2010: Migrating CDO based application to Outlook Object Model(OOM) library

Recently one of my developer customer migrated from Outlook 2003 to 2010. He tried running the custom application (uses CDO & Outlook 2003) in Outlook 2010. It throws the error “ActiveX component can’t create object”.  Using the following test sample, I can reproduce the exact issue at my end: As you know, Microsoft Outlook 2010…

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