PostStack is a European-hosted email API for transactional and marketing email — a GDPR-native alternative to Resend and Postmark.
Install this integration to automatically inject your PostStack API key as POSTSTACK_API_KEY into
the Vercel projects you select. No copy-paste, no leaked keys in .env files.
POSTSTACK_API_KEY to your selected Vercel projects automatically.fetch:import { PostStack } from '@poststack/sdk';
const ps = new PostStack(process.env.POSTSTACK_API_KEY);
await ps.emails.send({
from: 'hello@yourdomain.com',
to: 'user@example.com',
subject: 'Welcome',
html: '<p>Thanks for signing up</p>',
});
3. Verify a sending domain in your https://poststack.dev/dashboard/domains — DNS records can be
auto-pushed to Vercel-managed domains.
Rotate or revoke
The integration creates a dedicated, scoped API key. Revoke it any time from Dashboard → Settings →
Integrations → Vercel, or simply uninstall the integration — we'll clean up the env vars automatically.
Support
Email support@poststack.dev or visit https://poststack.dev/support.