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SENDMAILOS CAMPAIGNS
Build and send campaigns that actually convert
Drag-and-Drop Builder
Build beautiful, responsive emails without writing a single line of code. Choose from 100+ templates.
A/B Testing
Test subject lines, content, and send times with automatic winner selection to maximize every send.
Smart Scheduling
Schedule campaigns for optimal delivery based on your subscriber engagement patterns.
Health Scoring
AI-powered content analysis ensures your emails reach the inbox every time — not the spam folder.
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SENDMAILOS FEATURES
Powerful tools built for high-performing email campaigns
Email Campaigns
- ✓Drag-and-drop editor
- ✓100+ responsive templates
- ✓Performance tracking
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Satisfied Customers
Trusted by thousands of businesses sending smarter campaigns
SendMailOS delivers enterprise-grade email infrastructure with a 99.5% inbox placement rate — built for businesses that can't afford to miss the inbox.
24K+
Active Users
Growing +12% month over month
Open Rate
Industry-leading performance
80%
Average open rate
Emails sent
Reliable high-volume delivery.
1.5M+
Monthly sends
Inbox Placement
★★★★★
(5.0/5.0)
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