Everything worth knowing, nothing that isn't.
Why schedule
Timing drives engagement and compliance: reminders land before an appointment, marketing arrives in business hours, and quiet-hours rules are respected. Blasting everyone at your own local time wastes a global audience. See /answers/sms-marketing-best-practices.
Make it timezone-aware
Schedule against each recipient's local time so a 10am send is 10am everywhere, and never send during local quiet hours — a regulatory and courtesy requirement in many markets. See /answers/sms-compliance-checklist.
Scheduling at scale
Large scheduled campaigns still need throughput planning and DLR monitoring, since the whole volume may release at once. See /answers/how-to-scale-sms-throughput.