Dispatch real-time product notifications & security alerts with zero delay
Keep users engaged and informed with instant notifications for team invites, new comments, security warnings, and activity digests. High inbox placement guaranteed.
Drop into your application in under 60 seconds
Native typed interfaces with zero unnecessary dependencies. Built for standard fetch and modern edge runtimes.
import { SadaSend } from 'sadasend';
const sadasend = new SadaSend(process.env.SADASEND_API_KEY!);
export async function sendTeamInvite(invitedEmail: string, inviterName: string, teamName: string, inviteUrl: string) {
return await sadasend.emails.send({
from: 'notifications@yourdomain.com',
to: invitedEmail,
subject: `${inviterName} invited you to join ${teamName}`,
html: `
<p>Hi there,</p>
<p><strong>${inviterName}</strong> has invited you to collaborate in <strong>${teamName}</strong>.</p>
<p><a href="${inviteUrl}" style="background: #10b981; color: white; padding: 10px 20px; text-decoration: none; border-radius: 6px;">Accept Invitation</a></p>
`,
tags: ['team-invite', 'user-notification']
});
}Engineered for high deliverability and zero incident risk
Every layer from edge connection pooling to per-key rate limits is designed to keep critical transactional dispatches fast, reliable, and contained.
Instant Delivery Times
Deliver time-sensitive notifications like team invitations and security alerts in seconds, keeping team workflows fluid.
Per-Category Tagging
Tag notifications with metadata (e.g. security-alert, comment-mention, team-invite) to track analytics and delivery rates by channel.
Automatic Spam Trap Defense
Pre-flight syntax checking and suppressions protect your domain from emailing invalid addresses or known spam traps.
Scoped Keys for Microservices
Create restricted API credentials for individual microservices with recipient allowlists and velocity ceilings.
SadaSend vs Traditional SMTP Gateways
Standard SMTP relays lack granular category tagging, suppression tracking, and sub-second edge speeds. SadaSend modernizes your notification stack.
| Feature & Capability | SadaSend | Traditional SMTP Gateways |
|---|---|---|
| Average Edge Delivery Speed | < 2 seconds | 10 - 45 seconds |
| Per-Category Analytics & Tagging | ||
| Automatic Bounced Contact Suppression | ||
| Scoped API Keys with Allowlists |
Start with 3,000 emails every month at zero cost
No artificial paywalls on security. Unlike legacy providers that reserve recipient allowlists or dedicated IP pools for high enterprise tiers, every SadaSend account receives full safety controls from day one.
Everything you need to know about notification email API
Clear, transparent answers on deliverability, API authentication, and rate limits.
Related developer guides and architectural tutorials
Explore step-by-step production implementation blueprints, benchmarks, and protocols.
REST API Reference & Endpoints
Complete REST API reference for sending emails, managing API keys, tracking delivery events, and configuring recipient allowlists with low latency.
Official Client SDKs (TypeScript & Python)
Official zero-dependency client SDKs for SadaSend. TypeScript and Python packages are live on npm and PyPI with typed results and auto-idempotency.
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