I'm trying to create an online course with a series of email reminders to watch new lessons, each week. The idea is that someone makes a purchase on my squarespace site, they immediately receive a welcome email, then automatically, each week following they receive a new email with new content. I've been using Mailchimp for email marketing, but it looks to me that it doesn't integrate in this way (only passing info via newsletter signup or form block). Can Squarespace send up to six, automated emails in one series, and would anyone recommend this? I can't find the information anywhere.