Office365 Outlook REST API Does Not Return All Messages

Question

I am using Office365 and trying to get message count in Mail Folders with the following Powershell command:

( Invoke-RestMethod -Method get -Uri ("https://outlook.office365.com/api/beta/me//Messages/") -Credential $UserCredential ).Count

Mailbox I am using has 598 messages total however the command above will return only 10

If I take another approach and use the following command I would get 266 messages:

Invoke-RestMethod -Method get -Uri ("https://outlook.office365.com/api/beta/me//Messages/`$count") -Credential $UserCredential

Is there any way to get all the messages recursively in Office365 using REST API and if so, what I am doing wrong?

Kind regards

Yuriy

Answer 1

API me/messages will not return all the messages at one time, the default length is 10.

To get all the messages, you can use $top and $skip .

For example: me/Messages?$top=20 will get the top 20 messages, me/Messages?$skip=20&$top=20 will get the next 20 messages.