Inngest vs Trigger.dev

import { Inngest } from 'inngest';

const inngest = new Inngest({ id: 'my-app' });

// Define a background function
export const sendWelcomeEmail = inngest.createFunction(
  { id: 'send-welcome-email' },
  { event: 'user/signup' },
  async ({ event, step }) => {
    // Step 1: send email
    await step.run('send-email', () =>
      sendEmail(event.data.email, 'Welcome!')
    );

    // Step 2: wait 3 days, then send follow-up
    await step.sleep('wait-3-days', '3 days');
    await step.run('send-followup', () =>
      sendEmail(event.data.email, 'How are you finding things?')
    );
  }
);

import { task } from '@trigger.dev/sdk/v3';

export const sendWelcomeEmail = task({
  id: 'send-welcome-email',
  retry: { maxAttempts: 3, minTimeoutInMs: 1000, factor: 2 },
  run: async (payload: { userId: string; email: string }) => {
    const user = await db.users.findUnique({ where: { id: payload.userId } });
    await resend.emails.send({
      from: 'hello@myapp.com',
      to: payload.email,
      subject: 'Welcome!',
      html: `<p>Welcome, ${user.name}!</p>`,
    });
    return { sent: true };
  },
});

// Trigger from anywhere:
await sendWelcomeEmail.trigger({ userId: '123', email: 'alice@example.com' });