Seventh Sense is an AI-driven email marketing optimization platform designed specifically for HubSpot and Marketo users. It uses machine learning to analyze each contact's historical engagement patterns and determines the optimal send time and frequency for every individual in your database. Rather than blasting emails to your entire list at once, Seventh Sense staggers delivery so each recipient receives messages when they are most likely to engage. This approach increases open rates, click-through rates, and overall deliverability while reducing unsubscribes and spam complaints. The platform also offers email throttling, send time personalization, and engagement-based segmentation. It is best suited for B2B marketing teams, demand generation professionals, and enterprise organizations that rely heavily on email as a revenue channel and want to maximize ROI from their existing email infrastructure.

Pros

1. Truly personalized send times for each individual contact using AI analysis
2. Deep native integrations with HubSpot and Marketo for seamless workflow adoption
3. Improves email deliverability and sender reputation by distributing sends over time

Cons

1. Only works with HubSpot and Marketo — no support for other email platforms
2. Requires a substantial volume of historical engagement data to be effective
3. Pricing can be expensive for smaller teams or organizations with modest email lists

Best For

• B2B marketing teams using HubSpot or Marketo for email campaigns
• Demand generation professionals looking to improve email open and click rates
• Enterprise organizations seeking to optimize email deliverability at scale
• Sales and marketing alignment teams aiming to increase engagement with nurture sequences
• Email marketers experiencing declining engagement or high unsubscribe rates

Pricing

HubSpot plans start at $64/mo for Business tier (5,000 contacts); Marketo plans start at $360/mo for Business tier (50,000 leads). Custom Enterprise pricing available.