SendGrid Inbound Parse
Alternative for Modern Devs

// SendGrid webhook handler
app.post('/sendgrid-webhook', (req, res) => {
  // Parse form data manually
  const email = {
    from: req.body.from,
    to: req.body.to,
    subject: req.body.subject,
    text: req.body.text,
    html: req.body.html
  }
  
  // Handle attachments manually
  const attachmentCount = parseInt(
    req.body.attachment_info || '0'
  )
  
  const attachments = []
  for (let i = 1; i <= attachmentCount; i++) {
    if (req.files[`attachment${i}`]) {
      // Manual file processing...
    }
  }
  
  // No type safety, manual parsing
  console.log('Subject:', email.subject)
  res.status(200).send('OK')
})

// inbound webhook handler (TypeScript)
app.post('/inbound-webhook', (req, res) => {
  const { email }: InboundWebhookPayload = req.body
  
  // Fully typed, structured data
  const parsedEmail = email.parsedData
  
  // Type-safe access to all fields
  console.log('From:', parsedEmail.from.address)
  console.log('Subject:', parsedEmail.subject)
  console.log('Text:', parsedEmail.textBody)
  console.log('HTML:', parsedEmail.htmlBody)
  
  // Attachments already processed
  parsedEmail.attachments.forEach(attachment => {
    console.log('File:', attachment.filename)
    console.log('Size:', attachment.size)
    console.log('Type:', attachment.contentType)
  })
  
  // IntelliSense works perfectly
  res.status(200).json({ success: true })
})