The Complete Email PlatformBuilt for Scale
Send millions of emails, automate customer journeys, and grow your business with enterprise-grade infrastructure that just works.
Subscribers
24,521
+12%
Emails Sent
156,832
+8%
Open Rate
42.3%
+5%
Click Rate
18.7%
+3%
Email Performance
Trusted by thousands of growing businesses
Enterprise-grade email infrastructure that scales with your business
- API requests processed
- 2.5B+
- WordPress sites connected
- 15K+
- Pixel events tracked
- 100M+
- Inbox placement rate
- 99.5%
Everything you need
All-in-one email marketing platform
From simple newsletters to complex automation workflows, SendMailOS has all the tools you need to grow your business.
- Email Campaigns
- Create stunning emails with our drag-and-drop builder. A/B test subject lines, schedule sends, and track performance in real-time.
- Workflow Automation
- Build powerful customer journeys with our visual workflow builder. Triggers, conditions, delays, and multi-path routing.
- Subscriber Management
- Import, segment, and manage your audience with custom attributes, tags, and powerful filtering capabilities.
- Real-Time Analytics
- Track opens, clicks, bounces, and conversions. Understand your audience with device, location, and engagement insights.
- Developer API
- RESTful API with comprehensive documentation. Send transactional emails, manage subscribers, and trigger workflows programmatically.
- AI Copilot
- Generate compelling email content, subject lines, and A/B test variations with our AI-powered writing assistant.
- Custom Domains
- Send from your own domain with automated DKIM setup and DNS verification for maximum deliverability.
- Webhooks
- Receive real-time notifications for email events. Connect SendMailOS to your entire tech stack.
- Pixel Tracking
- Track website behavior and trigger automations based on page views, events, and user actions.
- Creator Pages
- Build beautiful landing pages to grow your email list. Custom handles and GDPR-compliant subscription forms.
- Unified Inbox
- Connect Gmail, Outlook, and IMAP accounts. Manage all your email conversations in one place.
- Agency Workspaces
- Manage multiple clients from one account. Separate domains, subscribers, and campaigns per workspace.
Email Campaigns
Create campaigns that convert
Design stunning emails with our intuitive builder. Test variations, optimize for deliverability, and track every metric that matters.
- Drag-and-Drop Builder
- Build beautiful, responsive emails without writing code. Choose from 100+ templates.
- A/B Testing
- Test subject lines, content, and send times with automatic winner selection.
- Smart Scheduling
- Schedule campaigns for optimal delivery based on subscriber engagement patterns.
- Health Scoring
- AI-powered content analysis ensures your emails reach the inbox.
- Rich Analytics
- Real-time opens, clicks, devices, locations, and engagement metrics.
Blocks
Welcome to SendMailOS
Your journey to better email starts now
Trigger
New Subscriber
Wait
5 minutes
Send Email
Welcome Email
Condition
Email Opened?
Yes
Send Follow-up
No
Resend Email
Visual Automation
Build powerful workflows without code
Create sophisticated customer journeys with our intuitive drag-and-drop workflow builder. React to customer behavior in real-time.
Trigger on any event
Take any action
AI Copilot
Write better emails with AI
Our AI copilot helps you create compelling email content faster. Generate subject lines, write copy, and remix existing content into engaging emails.
- Email Writing Assistant
- Generate compelling email copy, introductions, and calls-to-action in seconds.
- Subject Line Generator
- Create high-converting subject lines with AI-powered suggestions and A/B test ideas.
- Content Remix
- Transform any URL or content into email-ready copy. Perfect for newsletters.
- Chat Interface
- Refine your content through natural conversation. Iterate until it's perfect.
Write a welcome email for new subscribers to our SaaS platform
Here's a warm welcome email for your new subscribers:
Subject: Welcome aboard!
Hey [First Name],
We're thrilled to have you join us! You've just unlocked access to powerful tools that will transform how you work.
Here's what to do next:
• Complete your profile
• Explore the dashboard
• Send your first campaign
Developer API
Built for developers, by developers
Integrate email capabilities into your application with our comprehensive REST API. Send transactional emails, manage subscribers, and trigger workflows programmatically.
RESTful API
Simple, intuitive endpoints for all operations
API Keys
Scoped permissions and usage analytics
Webhooks
Real-time event notifications
Rate Limiting
Smart backoff with high limits
1// Send an email with the SendMailOS API2const response = await fetch('https://api.sendmailos.com/v1/send', {3 method: 'POST',4 headers: {5 'Authorization': 'Bearer YOUR_API_KEY',6 'Content-Type': 'application/json',7 },8 body: JSON.stringify({9 to: '[email protected]',10 subject: 'Welcome to our platform!',11 template: 'welcome-email',12 data: {13 name: 'John',14 company: 'Acme Inc'15 }16 })17});1819const { id, status } = await response.json();20console.log(`Email ${id} sent with status: ${status}`);Pixel Tracking for Behavior-Triggered Emails
Install our lightweight tracking pixel on your website and trigger automated email workflows based on user behavior. No coding required.
How it works
Install the pixel
Add a single line of JavaScript to your website. Works with any platform.
<script async src="https://sendmailos.com/pixel.global.js?id=YOUR_PIXEL_ID"></script>Automatic page tracking
The pixel automatically tracks page views, user sessions, and visitor behavior on your website.
Create automated workflows
Build visual workflows triggered by page views. Send the right email at the right time.
PIXEL TRIGGER
User adds item to cart
DELAY
Wait 1 hour
CONDITION
Did not complete purchase?
SEND EMAIL
Cart reminder + 10% discount
Track any event on your website
Page View
Track when users visit specific pages
Button Click
Capture button clicks and form submissions
Add to Cart
Track cart additions in e-commerce
Purchase
Monitor completed purchases
Sign Up
Track user registrations
Custom Events
Define any event you need
Trigger workflows automatically
User views pricing page 3 times
Send personalized demo offer email
Cart abandoned for 1 hour
Trigger abandoned cart recovery sequence
User purchases product
Start post-purchase nurture workflow
Integrations
Connect with your favorite tools
SendMailOS integrates seamlessly with the tools you already use. Native integrations, webhooks, and our REST API make it easy to connect everything.
Pricing
Start free, scale when ready
Start with our free plan and upgrade as you grow.
Ready to transform your email marketing?
Join thousands of businesses sending smarter emails with SendMailOS. Start your free trial today and see the difference.