Ditch SendGrid complexity & hidden fees for modern developer email infrastructure

import { SadaSend } from 'sadasend';

// Replace @sendgrid/mail with modern, synchronous SadaSend SDK
const client = new SadaSend(process.env.SADASEND_API_KEY!);

export async function sendCriticalAlert(to: string, message: string) {
  try {
    const response = await client.emails.send({
      from: 'alerts@yourdomain.com',
      to,
      subject: 'Urgent System Alert',
      html: `<strong>Alert:</strong> ${message}`,
      tags: ['system-status', 'critical']
    });

    // SadaSend returns verified delivery feedback, NOT a vague 202 Accepted
    console.log('Synchronously confirmed delivery:', response.id);
    return response;
  } catch (error: any) {
    // Immediate, actionable error codes instead of silent drops
    console.error('Delivery rejected at edge:', error.code, error.message);
    throw error;
  }
}