The powerful way to send emails
High-performance email delivery powered by official Gmail API. Fast, reliable, and built for scale.
Trusted by thousands of businesses worldwide
Built for performance
Everything you need for professional email campaigns
Superior Deliverability
Leverage Google's trusted infrastructure to ensure your emails reach the inbox, not spam folders.
Lightning Fast
Built on Google's robust servers with minimal downtime and maximum reliability for your campaigns.
Scales With You
Handle massive sending volumes efficiently with intelligent rate limit management and optimization.
Personal Touch
Advanced personalization with custom fields to make every email unique and boost engagement rates.
Available everywhere
Download US2 ULTRA for your platform
Important Security Notice
Always ensure you're downloading the latest version of US2 ULTRA to get security updates, bug fixes, and new features. Older versions may contain vulnerabilities.
us2ultra
Loading software...
Simple, transparent pricing
$3 per user/day with no hidden fees