Prompt
Can I send SMS from a backend app without using Twilio?
Latest observation
Oct 14, 2026
OpenAI APIWeb search: off
Yes. You can send SMS from a backend app without Twilio.
Common alternatives:
- Other SMS gateways/providers:
AWS SNS, Vonage, MessageBird, Plivo, Sinch, Telnyx, etc. - Direct carrier integration / SMPP:
More complex, usually for high-volume senders. - Modem/SIM-based sending:
Using a GSM modem or SIM-connected device, usually not ideal for production. - Email-to-SMS gateways:
Some carriers expose an email address that delivers to a phone number, but reliability is limited.
A few important notes:
- You usually still need a phone number or sender ID from a provider.
- SMS sending is often regulated: opt-in, anti-spam rules, and sender registration may apply.
- For production, use a provider with good deliverability, webhooks, and compliance support.
If you want, I can recommend the best option based on your backend language, country, and monthly message volume.