Using PHP or JSON encoded array to pull in specific email address for template

Hello,

We give golf lessons. We want to be able to send our customers emails or texts with things to do/work on before their next lesson. We are just building a site for customers to book & pay for lessons – we’re using Bookly Pro with several add-ons. Bookly has many built in notifications. We’re trying to use one, named “Follow-up message in the same day after appointment”, which requires cron setup, to send individualized “takeaways” from the lessons, including things like things worked on in the lesson, exercises to do, things to practice, etc. We can easily customize the template for each lesson but we need to be able to send out the customized template only to that customer.

I installed WP Crontrol and got to the Add Event page, which is as far as my knowledge gets me. I don’t know how to code PHP or JSON encoded array.

What I’m wondering is if either PHP or JSON can be set up in such a way that we customize the template, change something in the code to pull in the email address for that customer, use “send now”, then repeat for all the follow ups we need to send that day?

If that is possible, how do I get the code written?

Thanks.

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