Hi @Anonymous
Thank you for posting.
Based on your description, you couldn’t get email details from shared mailbox using ‘get emails (V3)’. If I misunderstood, please kindly let me know.
I tested from my end and it works fine.
Please make sure you do have email with attachments existing in this shared mailbox. My flow is quite simple:


One more thing I noticed is in ‘original mailbox address’ box, there is an entire email address listed from your end. However, when we input email address, the system will pop up a selection to let us choose this account. If the system couldn’t find this account and verify, please change another shared mailbox account to test again.

Hope the content above may help you.
Thanks
Anna