Schedule recurring email sends. Pick a template, set recipients, define a cron expression, and walk away. The worker fires every 30 seconds.

Standard 5-field format. Presets for hourly, daily, weekly, monthly. Or write your own.
UTC, US/Eastern, US/Pacific, Europe/London, Asia/Tokyo, and more.
Pass key-value pairs that fill {{placeholders}} in the template at send time.
Disable a cron job without deleting it. Re-enable and it picks up where it left off.