Prompt
Should I use SMS for appointment reminders or email?
Latest observation
Oct 14, 2026
OpenAI APIWeb search: off
It depends on your goal, but for appointment reminders, SMS is usually better if you want the highest chance people will see it.
Quick comparison
SMS
- Pros: Very high open rate, usually read quickly, good for short reminders and same-day alerts
- Cons: More expensive, character limits, needs phone number consent
- Best for: Time-sensitive reminders, no-show reduction, short confirm/cancel messages
- Pros: Cheaper, can include more detail, links, attachments, directions, prep instructions
- Cons: Lower open rate, may be delayed or missed
- Best for: Full confirmation messages, detailed instructions, non-urgent reminders
Best practice
For most businesses, the best approach is:
- Email for the initial confirmation and detailed information
- SMS for the reminder closer to the appointment
Simple rule
- If the reminder is important and time-sensitive: use SMS
- If you need to send more details: use email
- If you want the best results: use both
If you want, I can help you choose based on your industry, budget, and how far in advance you send reminders.