Yes, you can send out emails from your own domain by integrating with Sendgrid, Klaviyo, Omnisend, Mailchimp or Mailgun. To integrate you must be on the Growth plan or above.  

For Klaviyo Integration:

Follow this step-by-step guide to set up your emails. If you go with this option, all Emails must be created in Klaviyo.

For Omnisend Integration:

Follow this step-by-step guide to set up your emails. If you go with this option, all Emails must be created in Omnisend.

For Sendgrid Integration:

Follow this step-by-step guide to set up your emails.

For Mailchimp Integration:

Follow this step-by-step guide to set up your emails.

For MailGun Integration:

Follow this step-by-step guide to set up your emails.