When I create an email and press /Ready to send/ in production I see the /Send/ button within the email and I can click on, Send/Send Now and I see a dialog box called /Published Segments/ where I can choose a segment to send the email to.
However when I l navigate to an email in Sandbox, and the email is in ready to send state, I do not see the same Send button, it does not display, so I am unable to send the email to a segment, see screenshot. I would like to know how to send an email from sandbox directly to a segment without creating a journey, which is the behaviour I can do in production?