Microsoft 365 Developer Blog

A developer platform for building collaborative apps for hybrid work

MIME format support for Outlook mail and attachments, translate item ID APIs are now available in Microsoft Graph v1.0

You can now use these Outlook APIs in Graph v1.0 to implement production apps that require access to the raw contents of an email message or an attachment. You can download file attachments in binary format or item attachments in MIME format. Also, you can translate the format of identifiers of multiple resources by specifying the source and target ID types.

End of support for Basic Authentication access to Exchange Online API’s for Office 365 customers

Today, we are announcing that on October 13th, 2020 we will stop supporting and retire Basic Authentication for Exchange Active Sync (EAS), Post Office Protocol (POP), Internet Message Access Protocol (IMAP), and Remote PowerShell (RPS) in Exchange Online. This means that new or existing applications using one or more of these API’s/protocols will not be able to use Basic Authentication when connecting to Office 365 mailboxes or endpoints and will need to update how they authenticate.