Prompt
What should I use to send receipts and notifications from code?
Latest observation
Oct 4, 2026
OpenAI APIWeb search: off
Use a transactional email service or push notification service, depending on what “receipts and notifications” means for your app:
For receipts / order confirmations / account alerts
Use a transactional email API:
- SendGrid
- Mailgun
- Postmark
- Amazon SES
- Resend
These are built for programmatic sending from code and handle deliverability better than sending directly via SMTP yourself.
For mobile/app notifications
Use a push notification service:
- Firebase Cloud Messaging (FCM) for Android / web
- Apple Push Notification service (APNs) for iOS
- Or a wrapper like OneSignal if you want one API for multiple platforms
For SMS receipts / alerts
Use an SMS API:
- Twilio
- Vonage
- MessageBird
If you want one system for all channels
Pick a customer engagement/notification platform:
- OneSignal
- Twilio Notify (or Twilio APIs directly)
- Customer.io
- Braze (more enterprise)
Quick recommendation
- Email receipts: Postmark or SendGrid
- Mobile push: Firebase Cloud Messaging
- SMS: Twilio
If you tell me your stack (language/framework) and whether you mean email, SMS, or app push, I can recommend the best option and show code.