Sending Email with Send-MgUserMail (Microsoft Graph PowerShell)
A practical guide to using Send-MgUserMail for sending emails with attachments via Microsoft Graph PowerShell.
Exchange Online
Using Send-MgUserMessage to Send Email (with Attachments)
A complete example of using Send-MgUserMessage with HTML body and file attachments via the Microsoft Graph PowerShell module.
Querying msExchDelegateListLink in Exchange Online with PowerShell
The msExchDelegateListLink attribute isn’t exposed in Exchange Online cmdlets, but you can query it via AutoDiscover using SOAP and PowerShell.
Microsoft Office 365: A "Tales From The Trenches" Roundtable Webcast
A free interactive roundtable webcast with Planet Technologies and Microsoft experts discussing Office 365 migration challenges and best practices.