Sending multiple attachments from a One Drive folder to an external mailbox using a Power Automate flow can be very easy using a few steps (actions).
Trigger
For the demo purposes, I will use a manual trigger.
Actions
At the next, I will Initialize an array variable where the attachments will be stored.
The next action will list the files in the One Drive folder.
Using the Apply to each action, I will get the file contents of all the files in the folder, then I will compose the content and name of the file(s) into JSON and append the output to an array variable.
Finally, add the Attachments array to the Outlook attachments as the image below depicts and send the email to a Gmail mailbox.
