Use Case
Send verification emails with Postkit
Verify user email addresses at signup with a confirmation link or code. Postkit makes it a single API call with built-in retry safety.
Get Started FreeThe problem
Unverified emails mean bots, typos, and dead accounts. Your verification email needs to be reliable, fast, and resilient to double-submits on the signup form.
The Postkit solution
Send a verification email with Postkit's REST API. Use an idempotency key tied to the user ID so form double-submits never send two emails. Track delivery via webhooks.
verify-email.ts
await fetch("https://api.postkit.eu/v1/emails", {
method: "POST",
headers: {
Authorization: "Bearer pk_live_...",
"Content-Type": "application/json",
"Idempotency-Key": `verify-${userId}`,
},
body: JSON.stringify({
from: "noreply@yourapp.eu",
to: user.email,
subject: "Verify your email",
template_id: "tmpl_verify",
data: { name: user.name, verifyUrl },
}),
});Template example
Use a Handlebars template to keep your email content separate from your application code.
template.hbs
<h1>Verify your email, {{name}}</h1>
<p>Click below to confirm your address:</p>
<a href="{{verifyUrl}}">Verify email</a>