The #1 Email Marketing platform for B2B

SMASHSEND is the #1 Email Marketing Platform for B2B SaaS companies that helps you increase your activation and revenue with AI and B2B enrichment

Get Started β€” It's free

Marta garcia
Alexander Guy Head of Marketing & Growth at Zerion
Alexander Guy Head of Marketing & Growth at Zerion
Marta

3,000+ businesses trust us

Masthead Demo

Onboard, retain, and monetize 24/7 with Automations

Turn key moments in your product into revenue. No complex setup.

Welcome & Onboarding: turn signups into activated users with step-by-step nudges.

Expansion & upsells: trigger emails on usage milestones, new features, and price tiers.

Billing & payments: recover failed payments and expired cards automatically.

Churn win‑backs: re‑engage cancellations with targeted offers and feedback loops.

Connect in minutes, with your your fav SaaS tools:

StripeStripeStripeStripe

Watch

Email Automations demo

World-class AI Email Editorthat prints money

Create stunning email campaigns that gets delivered and prints money

Works on every email client and device

Supercharged with GPT-5, Claude & Gemini

Doc-like editor for maximum productivity

Watch

Email Automations demo

Smart Shortcuts

Boost your productivity with intelligent shortcuts.

@variables/blocks

AI Completion

Let AI help you write compelling emails faster than ever.

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Conditional Blocks

Display dynamic content based on user behavior and properties.

Fully Responsive

Perfect rendering on every email client and device, guaranteed.

Personalization

Use merge tags and dynamic fields to create unique experiences.

Transactional Ready

Send automated emails triggered by user actions and events.

All you need to grow your ARR.
It replaces 5 tools in one.

Launch powerful campaigns that convert

Create, automate, and optimize email marketing campaigns that drive real results.

AI-powered subject lines that boost open rates by 40%

Smart segmentation based on behavior and engagement

Automated drip campaigns and follow-up sequences

Real-time analytics with actionable insights

98%
Delivery Rate
3.2x
Higher CTR
Campaign Builder

Know your customers with a powerful CRM

Unlimited custom properties and segments

Enrichment built-in: company size, industry, location

Real-time activity timeline and email history

Integrates with your stack via API and webhooks

Manage contacts, understand behavior and personalize at scale. With SMASHSEND CRM you can get instant context to trigger campaigns confidently.

CRM Demo

Say goodbye to spam folders

SMASHSEND offers unparalleled deliverability.

Dedicated IP pools for reputational control

Auto-warmup algorithm to build sender reputation

Automatic compliance: SPF, DKIM, and DMARC

Expert onboarding to maximize inbox placement

Deliverability

Automate your entire customer journey

Set up powerful workflows that run 24/7 to onboard, engage, and retain customers automatically.

Welcome sequences that turn signups into power users

Revenue recovery for failed payments and expired cards

Time-based triggers for trials, renewals, and milestones

Win-back campaigns to re-engage inactive users

87%
Activation Rate
24%
Churn Reduction
Connects with:StripePostHogZapierSlack
Automation Builder

Ship blazing-fast transactional emails

Developer-friendly API with 99.99% uptime and sub-second delivery

Lightning fast: Average delivery time under 2 seconds globally

Enterprise-grade: Built-in retry logic, webhooks, and detailed logs

Templates & variables: Dynamic content with Handlebars syntax

Multi-region: Automatic failover across AWS, GCP, and Azure

2B+
Emails Sent
99.99%
Uptime SLA
<2s
Avg Delivery
Ready-to-use SDKs
Node.js / TypeScript
npm install @smashsend/node
Python
pip install smashsend
REST API
Direct HTTP with any language
// Send batch emails efficiently (up to 1000 per request)
const response = await fetch('https://api.smashsend.com/v1/email/batch', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY'
  },
  body: JSON.stringify({
    messages: [
      {
        to: 'alice@example.com',
        templateId: 'password_reset',
        variables: { resetToken: 'abc123' }
      },
      {
        to: 'bob@example.com',
        templateId: 'invoice',
        variables: { amount: '$99.00', dueDate: '2024-02-01' }
      }
    ]
  })
});
// Send a simple transactional email
const response = await fetch('https://api.smashsend.com/v1/email/send', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY'
  },
  body: JSON.stringify({
    to: 'customer@example.com',
    subject: 'Your order has shipped! πŸ“¦',
    html: '<h1>Great news!</h1><p>Your order #12345 is on its way.</p>',
    from: 'orders@yourcompany.com'
  })
});
// Use a pre-built template with variables
const response = await fetch('https://api.smashsend.com/v1/email/send', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY'
  },
  body: JSON.stringify({
    to: 'user@example.com',
    templateId: 'welcome_email',
    variables: {
      firstName: 'Alice',
      accountType: 'Premium',
      trialDays: 14
    },
    attachments: [
      {
        filename: 'invoice.pdf',
        content: 'base64_encoded_content'
      }
    ]
  })
});
// Send batch emails efficiently (up to 1000 per request)
const response = await fetch('https://api.smashsend.com/v1/email/batch', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY'
  },
  body: JSON.stringify({
    messages: [
      {
        to: 'alice@example.com',
        templateId: 'password_reset',
        variables: { resetToken: 'abc123' }
      },
      {
        to: 'bob@example.com',
        templateId: 'invoice',
        variables: { amount: '$99.00', dueDate: '2024-02-01' }
      }
    ]
  })
});
// Send a simple transactional email
const response = await fetch('https://api.smashsend.com/v1/email/send', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Authorization': 'Bearer YOUR_API_KEY'
  },
  body: JSON.stringify({
    to: 'customer@example.com',
    subject: 'Your order has shipped! πŸ“¦',
    html: '<h1>Great news!</h1><p>Your order #12345 is on its way.</p>',
    from: 'orders@yourcompany.com'
  })
});

Loved by thousands of great busines owners

Join the growing community of businesses that trust SMASHSEND email marketing to power their email campaigns

Mariani
Verified Purchaser
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Highly successful hyper-personalized email

Very promising tool with innovative solutions to maximize email delivery and opening. The hyper-personalization technology is at a very high level, and with AI integration, you can do amazing things.

Customer since: Apr 2020
Michael
Verified Purchaser
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Freaking Awesome!

We've been looking to migrate away from Mailchimp which felt really "old school" and stale. The Zoo Tools email editor was really easy and quick. Highly recommend this to anyone that wants a high powered, modern solution.

Customer since: Dec 2024
Raul
Verified Purchaser
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Clean, modern interface

Email editor focused on clean design with essential functionality within reach. The dev team takes great care in their rollout process. Customer support is quick and responsive.

Customer since: Nov 2024
Kedelen
Verified Purchaser
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Finally something different and better

A reasonable price with a generous amount of contacts. When you can get it for a lifetime deal, that's a deal. Having a nice easy to use interface is a bonus!

Customer since: Mar 2023
David Martinez
Verified Purchaser
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Great product & Support

The product is exceptionally clear, intuitive, and highly user-friendly. The team showcases outstanding efficiency, transparency, and integrity at every stage.

Customer since: Nov 2020
Josh
Verified Purchaser
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Looking forward to new updates

Impressed with the speed and efficiency of the team. Support helped me set up my custom domain quickly. Loving the Notion-like email editor. The platform is solid and loads super fast.

Customer since: Nov 2024

The email editor is incredibly easy to use, and the analytics are extremely helpful for improving campaign performance. Highly recommended!

Start Sending Smarter Emails Today

Join the thousands who are already seeing results with SMASHSEND email marketing today!