By default, all emails sent from your Gratavid Account will be sent via "firstname.lastname@example.org".
If you want to send Gratavid emails from your own email address or domain (ie - email@example.com ), then reach out to firstname.lastname@example.org to set this up. There is a cost associated with this feature.
Not only will you be able to send from your domain, but you will be able to select the entire email address to send from for each note under email settings. Note: this option is only available if you have setup your own domain.