All documents sent from Zomentum are sent via firstname.lastname@example.org. Single email address verification allows you to send documents from an email address of your choice. Once verified, all the documents you send from Zomentum will be sent via this email. In case multiple email addresses are verified, you will have an option to select the ‘from address’ before sending the email.
Using the above-mentioned process, the email will still be routed through Zomentum's mail server, and hence the end client will see a tag saying sent via amazonses.com, something similar to the below image.