How do I change the sending email address of site system emails?
You can change the email address site system emails are sent from e.g.welcome email, password reset, as follows:
You can override this setting for individual emails by going to the System Emails section (below the Site Profile area above), and selecting an email that you want to change. Add the alternative email address in the 'From' field.
Select the Settings icon from the left hand navigation
Select the Site Profile section from the navigation on the left-hand side of the Settings area (the first option under the General category)
Change the Site Email Address, under Primary Domain/Email to what you require.
Click Save to commit your change.
NB. To use a domain email address to send emails via the site you must have an SPF record set up. You can read more about this here.