Office 365 Send email with multiple attachments

Hi All,

I have created a workflow to send emails with multiple attachments using Office 365 scope. The below is to attach all the excel files located in a folder.

Now the problem is if the attachment is 100-1400 KB the email sends but when the attachment is above 5-6 MB it gives the below error.

“Microsoft Office 365 Scope: Code: ErrorIrresolvableConflict
Message: The send or update operation could not be performed because the change key passed in the request does not match the current change key for the item.”

I can only use Office 365 scope as per company policy. Any help on this or another way around is appreciated.


There is an attachment size limit on office 365 activities…

As a workaround…you can upload the files to shareoint and send the link in email

As an alternative you can try the http request directly


Hi @Debasis_Nayak
In Send Outlook mail actions, use the Attach files property to add more filepaths.

Kaviyarasu N

Can you please explain more about this or attach a sample how to do it using Office 365 scope.