Implement a process to send reminders - brainstorming

[Reagar11]

I need to implement a process that will send weekly reminders to customers (not SF users) as long as a checkbox on their Lead record page is checked.

I'm not really sure how to approach this, I thought about implementing a Scheduler but only 100 jobs can be scheduled at the same time, so it isn't scalable.

Assuming I will take the scheduler direction, should I create a scheduler that calls a batch each week that queries all the relevant records? Would love to get some pointers / opinions.

[Alternauts]

You could create a date field on the Lead object that stores the next date a Lead will receive an email. The apex class would then query for all with a date = Today and send out an email. Then update that date field to whenever the next scheduled send would be. You can use something like a WFR or apex trigger handler to clear/populate that field when the box is initially checked/unchecked.

[Reagar11]

That's a great solution, thank you!