Seventh Sense
AI-powered email send time optimization for HubSpot and Marketo
About Seventh Sense
Seventh Sense is an AI-powered email delivery optimization platform built specifically for HubSpot and Marketo. It uses machine learning to analyze individual contact engagement patterns and automatically delivers emails at the optimal time for each recipient. Beyond send time optimization, it manages audience health by segmenting contacts based on engagement levels and helps marketers increase open rates, click-throughs, and overall email performance without changing their content strategy.
Pros & Cons
Pros
- Genuinely improves email open rates by 10-40% simply by optimizing send times - no content changes needed
- Native HubSpot and Marketo integrations mean zero disruption to existing marketing workflows
- Audience engagement scoring helps identify and suppress disengaged contacts before they hurt deliverability
- Set-and-forget optimization - once configured, it continuously learns and adapts without manual intervention
- Email throttling prevents inbox provider throttling and spam filtering during large sends
Cons
- Only works with HubSpot and Marketo - no support for Mailchimp, Klaviyo, ActiveCampaign, or other platforms
- Marketo pricing at $450/month is steep for smaller marketing teams
- Requires sufficient historical engagement data to build accurate optimization models
- Limited value for businesses with small email lists (under 5,000 contacts)
- Does not optimize email content, subject lines, or design - only delivery timing and audience
Key Features
Send Time Optimization
AI analyzes each contact's engagement history to deliver emails at the exact time they're most likely to open and click
Email Throttling
Spread email delivery across optimal windows to avoid overwhelming mail servers and improve deliverability
Audience Engagement Scoring
Automatically segment contacts by engagement level to target active subscribers and re-engage dormant ones
A/B Testing
Test different send time strategies with built-in A/B testing optimized for statistical significance
Contact Analytics
Deep analytics on individual contact behavior patterns, engagement trends, and optimal interaction windows
HubSpot Native Integration
Built directly into HubSpot's workflow - works with marketing emails, sequences, and automated campaigns
Marketo Integration
Native Marketo integration with engagement program support and smart campaign compatibility
Deliverability Management
Reduce bounce rates and spam complaints by only sending to engaged contacts at optimal times
Pricing
- Send time optimization
- Email throttling
- Engagement scoring
- A/B testing
- Contact analytics
- Annual billing
- All Business features
- Custom integrations
- Advanced analytics
- Dedicated support
- SLA guarantees
- Send time optimization
- Email throttling
- Engagement scoring
- Smart campaign support
- Annual billing
- All Business features
- Custom integrations
- Advanced analytics
- Dedicated support
- SLA guarantees
Best For
B2B Email Marketing
Optimize send times for business emails where recipients have varied work schedules and time zones
Newsletter Delivery
Improve newsletter open rates by delivering to each subscriber during their peak engagement window
Marketing Automation
Integrate with HubSpot or Marketo automated campaigns to optimize every touchpoint in a nurture sequence
Email List Health
Identify and suppress chronically disengaged contacts to protect sender reputation and deliverability
Enterprise Email Campaigns
Throttle large email sends across optimal delivery windows to avoid inbox provider rate limiting
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