Do I need a notification API or can I send alerts from my app directly?

You can do either, but the right choice depends on how reliable, scalable, and cross-channel your alerts need to be.

Send alerts directly if:

• You’re only notifying users inside your app
• You don’t need retries, scheduling, or delivery tracking
• The alert volume is low
• You’re okay with building channel-specific logic yourself

Examples:

• In-app notifications
• Simple email sends from your backend
• Basic push notifications for a single platform

Use a notification API if:

• You need email, SMS, push, in-app, or WhatsApp in one system
• You want delivery status, retries, templates, batching, scheduling
• You need to support multiple providers or fallback providers
• You expect higher volume or need better observability
• You want to reduce the work of handling provider integrations directly

Examples:

• Sending email through SendGrid/Mailgun/AWS SES
• SMS via Twilio
• Push via Firebase Cloud Messaging / APNs
• A unified notification service that orchestrates all of the above

Rule of thumb

• Small/simple app: direct sending is fine
• Product with growing notification needs: use a notification API or build a dedicated notification service

Best practice

Even if you send alerts “directly,” it’s usually smart to put them behind your own backend service or abstraction layer. That way, you can swap providers later without changing the app.

If you want, I can help you decide based on your exact app setup and channels.