Write better emails with the power of AI
Email Writing Assistant
Generate compelling email copy, introductions, and calls-to-action in seconds. Stop staring at a blank page — just describe what you need and the AI writes it.
Subject Line Generator
Create high-converting subject lines with AI-powered suggestions and ready-to-use A/B test ideas. More opens start with the right first impression.
Content Remix
Paste any URL or existing content and the AI transforms it into email-ready copy. Turn blog posts, landing pages, or product descriptions into newsletters instantly.
Chat Interface
Refine your email content through natural conversation. Ask for a shorter version, a different tone, or a stronger CTA — iterate until it's exactly right.
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AI-POWERED TOOLS
Every AI tool you need to write emails that actually perform
Best seller
AI Email Writing
- ✓Full email generation
- ✓Introductions & CTAs
- ✓Tone & style control
Subject Line A/B Testing
- ✓AI subject line suggestions
- ✓A/B test variations
- ✓Automatic winner selection
Content Remix Engine
- ✓URL-to-email conversion
- ✓Newsletter-ready output
- ✓ Instant content repurposing
Seamless Integration
- ✓Built into the email editor
- ✓Works with all campaign types
- ✓Direct send from AI output
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TRUSTED BY THOUSANDS
Teams that use the AI Copilot spend less time writing, get better results
The SendMailOS AI Copilot is built into every account — from the free plan up. No extra tools, no extra cost. Just faster, better email content from day one.
24K+
Active Users
Growing +12% month over month
Average Open Rate
AI-optimized subject lines
43%
+5% growth month over month
Emails Delivered
Reliable high-volume delivery
156K+
Monthly sends
Inbox Placement Rate
★★★★★
99.5%
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