The email address you used to send outgoing emails from Systeme io doesn’t need to be the domain you pointed to Systeme io.
For example, you have a domain name xyz.com pointed to Systeme io, and you wish to use [email protected]
That’s possible. you just need to go to the navigation menu Settings – Mailing settings and add the new domain for authentication. You may add more so that you can use multiple sender emails.
(note that you can authenticate multiple domains and use the domain emails you have authenticated to send out emails from your Systeme io)
Once you have done that, you can start using the email (that you already have) by inputting the email address as “Sender email address”