Sendersy + Tilda

# Tilda → your site → Site Settings → Forms → Custom webhook URL

# Tilda has no built-in secret store, so keep the API key
# in your own proxy endpoint (Cloudflare Worker or Next.js API route).

// A minimal proxy endpoint (Next.js / Vercel Edge).
// Paste this endpoint's URL into Tilda → Forms → Custom webhook URL.

export async function POST(req: Request) {
  const form = await req.formData()
  const email = String(form.get('Email') ?? form.get('email') ?? '')
  const name  = String(form.get('Name')  ?? form.get('name')  ?? '')

  if (!email) return new Response('Email required', { status: 400 })

  await fetch('https://api.sendersy.com/v1/emails', {
    method: 'POST',
    headers: {
      'Authorization': `Bearer ${process.env.SENDERSY_API_KEY}`,
      'Content-Type':  'application/json',
    },
    body: JSON.stringify({
      from:    'Tilda site <noreply@yourdomain.com>',
      to:      email,
      subject: 'Thanks for your submission!',
      html:    `<p>Hi ${name}! We received your form and will reply within a day.</p>`,
      tags:    [{ name: 'source', value: 'tilda' }],
    }),
  })

  // Tilda expects 200, otherwise the user sees an error.
  return new Response('OK')
}