On Combo, when you publish your schedule, if you have filled in an email address in the employees profile attached to the team (whether they are invited or not), then they will receive their shifts for the week by email.
The email indicates the location and schedule for the employee, their absences, scheduled shifts and break times.
Good to know : If you don't want your employees to receive their schedule by email, you can either leave their email address blank or uncheck the "Send schedule by email to employees" option when publishing your schedule.
What does the published schedule email look like for your employees ?