Inngest Has a Free Event-Driven Functions Platform — Build Workflows with Steps, Retries, and Delays

Why Inngest?

Inngest runs reliable functions triggered by events. Multi-step workflows with automatic retries, delays, and fan-out — no queues to manage.

npm install inngest

Define a Function

import { inngest } from './client'

export const processSignup = inngest.createFunction(
  { id: 'process-signup' },
  { event: 'user/signup' },
  async ({ event, step }) => {
    // Step 1: Send welcome email
    await step.run('send-welcome', async () => {
      await sendEmail(event.data.email, 'Welcome!')
    })

    // Step 2: Wait 1 day
    await step.sleep('wait-1-day', '1d')

    // Step 3: Send onboarding email
    await step.run('send-onboarding', async () => {
      await sendEmail(event.data.email, 'Getting started guide')
    })

    // Step 4: Wait 3 days
    await step.sleep('wait-3-days', '3d')

    // Step 5: Check engagement
    const isActive = await step.run('check-engagement', async () => {
      return await checkUserActivity(event.data.userId)
    })

    if (!isActive) {
      await step.run('send-re-engage', async () => {
        await sendEmail(event.data.email, 'We miss you!')
      })
    }
  }
)

Trigger Events

import { inngest } from './client'

await inngest.send({
  name: 'user/signup',
  data: { userId: '123', email: '[e-mail]' },
})

Inngest vs Temporal vs Trigger.dev

Feature	Inngest	Temporal	Trigger.dev
Steps	Built-in	Activities	Tasks
Delays	step.sleep	Timer	wait
Events	Native	Manual	Triggers
Self-host	Yes	Yes	Yes
Complexity	Low	High	Low

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