There is a lot more involved in sending an email than people realize. You have to write the copy, find graphics (if needed), come up with a catchy subject line, format the email, select the right target audience (this can be a real pain depending on the software used), and finally schedule it for the appropriate time and day.
On average, this process takes two to three hours per email. Most PMC’s only have one marketer managing five to ten properties. That’s a lot of emails for a marketer to be responsible for on top of the rest of their marketing initiatives.