Email API
that developers love

Send transactional emails via REST API. SDKs for 10 languages, real-time webhooks, and email validation — integrate in under an hour.

Get started free Documentation

$composer require sendkit/sendkit-laravel

// .env
MAIL_MAILER=sendkit
SENDKIT_API_KEY=sk_your_api_key

// Use Laravel mail as usual — no changes needed:
Mail::to('[email protected]')
    ->send(new WelcomeEmail());

From first API call to production in minutes

Clean endpoints, typed SDKs, and clear docs. Everything you need to send and track transactional emails from your app or AI agent.

REST API

Clean, well-documented REST API for sending emails, managing contacts, and querying analytics. JSON request and response format.

SMTP relay

Standard SMTP relay with TLS encryption. Drop-in replacement for any SMTP provider. Just update your credentials.

Webhooks

Real-time webhook notifications for delivery, opens, clicks, bounces, complaints, and unsubscribes.

Official SDKs

First-party SDKs for 10 languages: Laravel, Node.js, Python, PHP, Ruby, Go, .NET, Java, Elixir, and Rust. Install from your package manager and start sending in minutes.

Authentication

API key authentication with scoped permissions. DKIM, SPF, and DMARC setup for your sending domains.

Delivery analytics

Query delivery status, open rates, click rates, and bounce data via the API. Build custom dashboards and reports.

Built for production workloads

99.9% uptime SLA, signed webhooks, and rate limiting with automatic retries. Infrastructure you can depend on.

Template API

Create, manage, and render email templates via the API. Use Handlebars syntax for dynamic content and variables.

Batch sending

Send to multiple recipients in a single API call. Each recipient gets a personalized version of the email.

Inbound email

Parse incoming emails with inbound routing. Forward replies and incoming messages to your app via webhook.

Webhook signing

All webhooks are signed with HMAC-SHA256. Verify the signature to ensure events are authentic.

Rate limiting

Generous rate limits with clear headers. Automatic retry with exponential backoff in all SDKs.

99.9% uptime SLA

Enterprise-grade infrastructure with redundancy across multiple regions. Status page and incident notifications.

Trusted by teams that depend on email

See how developers, marketers, and product teams use SendKit to send emails that reach the inbox.

We switched to SendKit for our transactional emails and saw deliverability jump from 94% to 99.2%. The API is clean, the docs are great, and we were integrated in under an hour.

Sarah Chen

CTO at Launchpad

SendKit's SMTP relay was the easiest migration we've done. We just swapped the credentials and everything worked. The real-time webhooks for bounce handling saved us weeks of work.

Marcus Rodriguez

Founder at Stackflow

The campaign builder is surprisingly powerful for a developer-focused tool. We run our entire newsletter and drip sequences through SendKit now. The analytics are exactly what we needed.

Emily Park

Head of Growth at Metric

What sold us was the pricing transparency. No per-contact fees, no surprise charges. We send 500K transactional emails a month and the cost is predictable every single time.

James Okafor

Lead Engineer at Paystream

We needed both transactional and marketing email in one platform. SendKit handles our password resets, order confirmations, AND our weekly newsletter. One dashboard, one bill, zero headaches.

Ana Soares

Co-founder at Buildkit

The automation workflows are a game-changer. We set up onboarding sequences that trigger based on user events via the API. Our activation rate improved 40% in the first month.

David Kim

DevOps at CloudBase