Hi Hayze,
>>Is there a way to hide this time stamp so the recipient only sees what time they received it in their inbox?
Normally, recipients won’t know whether this email is delay delivered.
I checked this on my side. Recipient should only see ‘received time’ in their inbox. I also checked message header and the ‘Creation time’ is the date when Outlook sent out the email.
Please refer to my results:
1. I draft the email on 9:25 am and set to delivery on 9:30 am.
2. Outlook sent it out around 9:30 am.
3. In recipient’s Inbox, it shows the received time: 9:31am

4. I open the message header. We can only find the ‘sent out’ and ‘received time’.

Could I know where do you see the draft time? If you check message in your Outbox, you may see the ‘Sent Time’ is the draft time. But recipient won’t see this information.

If you have further concern, please feel free to post back.
Regards,
Perry
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