Email sent from CRM Sales Order screen not showing in Email tab

Email sent from CRM Sales Order screen not showing in Email tab

When I choose a Sales Order, click on the Send Mail button and send an email, the targeted recipient gets the email with attachment as expected. I also see the email in the Emails section of the Sales Order. However, when I click on the Emails tab in Zoho and take a look at my Sent mail folder, I don't see this email.

Is this as expected? I would hope not since I'd want to be able to pull up the email from either the Sales Order screen or my Zoho mailbox.

Note that the mail account I am using is not Zohomail but a POP3 account. Sending emails from the Zoho email screen results in the sent email showing up in the Sent folder.

Thanks,
Senthil