Transactional Link Shortener — Built to Never Break

Works with the email and SMS infrastructure you already use

Linkly sits between your sending infrastructure and your users. Generate a short link via the API, pass the result into your existing provider's send call. No protocol changes, no provider migration.

Don't see your provider? Linkly works with any system that can make an HTTPS request — see the URL shortener API.

import sgMail from "@sendgrid/mail";
import crypto from "crypto";

sgMail.setApiKey(process.env.SENDGRID_API_KEY);

async function sendMagicLink(user) {
  // 1. Mint a one-time auth token (your existing auth system)
  const token = crypto.randomBytes(32).toString("hex");
  await saveTokenForUser(user.id, token, { expiresInMinutes: 15 });

  // 2. Shorten the auth URL via Linkly — branded, on your auth domain
  const authUrl = `https://yourapp.com/auth/verify?token=${token}`;
  const link = await fetch(
    `https://app.linklyhq.com/api/v1/link?api_key=${process.env.LINKLY_API_KEY}`,
    {
      method: "POST",
      headers: { "Content-Type": "application/json" },
      body: JSON.stringify({
        workspace_id: process.env.LINKLY_WORKSPACE_ID,
        url: authUrl,
        name: `magic-${user.id}-${Date.now()}`,
        domain: "auth.yourapp.com",
      }),
    },
  ).then(r => r.json());

  // 3. Send the email — short branded link in the body
  await sgMail.send({
    to: user.email,
    from: "auth@yourapp.com",
    subject: "Sign in to YourApp",
    text: `Tap to sign in (link expires in 15 minutes):\n\n${link.full_url}`,
  });
}

For multi-language examples, the OpenAPI spec, and the full API reference, see the URL Shortener API.

Built for procurement, security, and legal review

Real commitments, documented for the buyers who need them.

Status: status.linklyhq.com · Compliance details: GDPR

Transactional link shortener — frequently asked questions

What's a transactional link shortener?

A short-link service built for links that have to work reliably, every time — magic links, password resets, order confirmations, appointment reminders. The distinguishing features are link permanence (no expiry, no breakage on plan changes), an uptime SLA on the redirect path, and brand-domain trust signals that get the link past inbox filters.

How is this different from Linkly for SMS marketing?

Same underlying product, different audience and emphasis. The SMS marketing use case optimises for click-through rate on promotional sends. The transactional use case optimises for reliability and permanence on mission-critical sends. Most teams use Linkly for both, but the buying decision is usually driven by one or the other.

Do Linkly short links expire?

No. Every link Linkly creates is permanent by default. There is no TTL, no auto-deletion, and no expiry option built into the link itself. If you need an expiring or scheduled link, enforce expiry on your auth token or destination — not on the Linkly short link.

What happens if I exceed my plan's click limit on a transactional send?

Links keep redirecting. Linkly does not break in-the-wild links if you exceed your plan limits — you're notified by email and prompted to upgrade, but the redirect path stays live. This matters most for password-reset and order-confirmation sends, where a broken link costs you the user.

What's Linkly's uptime SLA on the redirect path?

99.9% measured on the redirect path (the critical surface for transactional links). Status page at status.linklyhq.com shows historical uptime. Enterprise plans include a contractual SLA with defined service credits.

Can I shorten magic links and password-reset links via API?

Yes. Use Linkly's REST API to generate a branded short link from your auth URL before sending. Bulk-create up to 1,000 links per request, full OpenAPI 3.0 spec. See the URL Shortener API page for full code samples in six languages.

Will branded short links improve email deliverability for transactional sends?

Generally yes. Email inbox filters increasingly flag generic shorteners (bit.ly, tinyurl.com) on transactional sends because phishing campaigns abuse them at scale. Branded short links on a domain that matches your sending domain read as legitimate. SMS deliverability follows a similar pattern — US carriers' filtering rules favour branded short domains over generic shorteners.

Does Linkly support GDPR-compliant transactional sends?

Yes. Linkly is GDPR-compliant by default. A Data Processing Addendum is available for all paid customers. EU data residency is available on Enterprise plans. Webhook payloads can be configured to exclude personally identifiable information for stricter compliance needs — useful for healthcare and financial-services use cases.

Can I integrate Linkly with SendGrid, Postmark, Mailgun, or Twilio?

Yes. Linkly sits in front of any email or SMS provider — generate a branded short link via Linkly's REST API, then pass the result into your provider's send call. No provider migration required. Works alongside SendGrid, Postmark, Mailgun, AWS SES, Twilio, Bandwidth, Sinch, and any system that can make an HTTPS request.

What does Linkly's status page show?

Real-time and historical uptime metrics for the redirect path, the API, and the dashboard. Subscribe to status updates by email or RSS. Status page lives at status.linklyhq.com.