Seventh Sense
PaidAI email send time optimization that delivers each subscriber email at their personal best open time
What is Seventh Sense?
Seventh Sense is a specialized email optimization tool that plugs into HubSpot and Marketo to automatically send each subscriber email at their personal best open time. Instead of blasting everyone at 9 AM Tuesday, Seventh Sense learns individual engagement patterns, one contact opens emails at 6:30 AM, another at 10 PM, and schedules delivery accordingly, spread over a configurable window. The tool also throttles sends to protect deliverability, avoiding the sudden spike that often triggers spam filters. Seventh Sense publishes a 7% to 100% email performance improvement, an average 44% increase in engaged audience in year one, and a 61% cut in send volume to non-engaged people. Unlike general email tools like Mailchimp AI that offer basic send-time optimization, Seventh Sense operates at the individual contact level using machine learning trained on billions of email interactions. Since our first review the product has grown well past send time into a four-part AI layer: Orchestration (cross-campaign frequency caps, blackout windows, and priority lanes that replace a campaign calendar), Send-Time Optimization, Audience Recycling (automatically resting contacts below an engagement-probability threshold you set, then bringing them back), and Insights (per-inbox-provider performance, audience health, and per-person engagement profiles surfaced inside the CRM record). A Recommendations advisor is in beta. The vendor now trades as Telepath Data, Inc. and reports 1,000+ HubSpot and Marketo customers, including SAP, Demandbase, Carahsoft, RocketReach, Greenpeace, and Databox, with 500M+ personalized emails orchestrated and scheduled each month. It is particularly valuable for B2B newsletter operators, publishers sending daily digests, and demand gen teams running nurture sequences. The HubSpot integration is native and transparent: Seventh Sense appears as a send option inside HubSpot normal workflow, so marketers do not learn a new interface. The Marketo integration works similarly inside Marketo Smart Campaigns, where Seventh Sense is an Adobe Exchange partner. Pricing is now public on both sides and priced per marketing contact, billed annually, stair-stepped in 5,000-contact increments: it starts at $80/month for HubSpot at 5,000 contacts and $450/month for Marketo at 50,000 leads, and runs to 500,000 on either platform before Enterprise takes over. Unlimited users, onboarding, training, and support are included, and there are no per-seat fees or mid-term overage charges.
Seventh Sense demo video
Watch Seventh Sense's official demo to see Seventh Sense in action before reading our full review.
Official video by Seventh Sense via YouTube, embedded for reference. ToolChase does not host or claim this video.
⚡ Quick Verdict
HubSpot and Marketo users running newsletters and nurture campaigns at 5k+ contacts
Lists below the 5,000-contact entry tier, or anyone on Pardot, Klaviyo, Eloqua, or another non-HubSpot/Marketo stack
HubSpot from $80/mo at 5,000 contacts · Marketo from $450/mo at 50,000 leads · Billed annually · No free plan
No, paid only; free trial, no credit card required
Four AI layers over HubSpot and Marketo: per-person send time, cross-campaign orchestration, audience recycling, and per-inbox-provider insights
Only integrates with HubSpot and Marketo, no Klaviyo, Mailchimp, or ActiveCampaign
Bottom line: Seventh Sense scores 4.3/5, the most reliable way to improve email performance without touching subject lines or creative, and in 2026 it is no longer just a send-time tool. Worth the $80/mo entry tier, billed annually, once you are sending to 5,000+ contacts on HubSpot or 50,000+ leads on Marketo.
Pricing
Pricing moved to a single public "Business" tier priced per marketing contact and billed annually, stair-stepped in 5,000-contact increments. Onboarding, training, support, and unlimited users are included at every level, with no per-seat fees and no mid-term overage charges.
HubSpot Business, from $80/month: The entry step covers 5,000 marketing contacts and includes all four AI capabilities (orchestration, send-time optimization, audience recycling, insights), unlimited sends, throttling, pause and resume, A/B and multivariate testing, and engagement profiles inside the HubSpot CRM record. The slider runs up to 500,000 contacts; use Seventh Sense's own calculator for the exact price at your list size.
Marketo Business, from $450/month: The Marketo track starts at 50,000 leads and also runs to 500,000, with native Smart Campaign flow steps and automatic API throttling.
Enterprise: Custom pricing from 150,000 HubSpot marketing contacts or 300,000 Marketo leads. Adds SSO, phone and 24x7 priority support, a dedicated customer success manager, custom MSA/DPA/SLA, and multi-portal or agency management.
Free trial: Free trial with no credit card required, full platform access, first insights within 24 hours. No free forever plan. Contracts are annual and can be cancelled before renewal; multi-year discounts are available on request.
Key Features
- Individual send-time optimization per contact
- Machine learning trained on billions of email interactions
- Native HubSpot integration inside existing workflows
- Native Marketo integration with Smart Campaigns
- Automatic send throttling to protect deliverability
- Cross-campaign orchestration with frequency caps, blackout windows, and priority lanes
- Audience Recycling that rests low-probability contacts and reactivates them automatically
- Per-inbox-provider reporting for Gmail, Google Workspace, Office 365, and others
- Contact-level engagement score surfaced inside the HubSpot CRM record
- Unlimited users with no per-seat fees
- AI Recommendations advisor (beta)
Pros & Cons
Pros
- Vendor-published 7% to 100% email performance improvement without changing creative
- Native integration means zero workflow changes
- Send throttling and audience recycling improve deliverability as a bonus
- Purpose-built for email, not a general AI tool
- Unlimited users, onboarding, training, and support included at every tier
Cons
- Only works with HubSpot and Marketo
- No free plan, and the $80/month entry tier is an annual commitment
- Smallest tier sold is 5,000 marketing contacts, 50,000 leads on Marketo
FAQ
Is Seventh Sense worth the $80/month minimum?
For HubSpot users sending to 5,000+ contacts weekly, yes. Seventh Sense publishes a 7% to 100% email performance improvement and an average 44% increase in engaged audience in year one, and at the low end of that range the subscription pays for itself quickly if your baseline revenue per open is anything meaningful. 5,000 marketing contacts is the smallest tier Seventh Sense sells, and below that individual send-time patterns do not have enough data to stabilize. Publishers, SaaS newsletters, and B2B nurture campaigns typically see the strongest ROI. Note that the subscription is annual, so the $80/month entry tier is a $960 first-year commitment.
Does Seventh Sense have a free plan?
No. Seventh Sense is paid-only, sold as an annual subscription priced per marketing contact and stair-stepped in 5,000-contact increments. As of August 2026 the published entry points are $80/month for HubSpot at 5,000 contacts and $450/month for Marketo at 50,000 leads, running up to 500,000 on either platform, with Enterprise quotes from 150,000 HubSpot contacts or 300,000 Marketo leads. A free trial with no credit card required is available so you can measure lift against your own baseline before committing; Seventh Sense no longer publishes a trial length. Unlimited users, onboarding, training, and support are included at every tier, and there are no per-seat fees.
Does Seventh Sense work with Mailchimp or Klaviyo?
No. Seventh Sense only integrates with HubSpot and Marketo. For Mailchimp users, Mailchimp built-in Send Time Optimization is the closest alternative. Klaviyo users can use Klaviyo Smart Send Time feature. Neither offers the contact-level individualization Seventh Sense provides, but both are free with the platform.
How much lift should I expect in open rates?
Seventh Sense publishes a range rather than a single number: 7% to 100% email performance improvement, an average 44% increase in engaged audience in year one, and a 61% reduction in send volume to non-engaged people. Its named customer case, ProAthlete Inc. on HubSpot, reports 11% email revenue growth year over year while sending 44% fewer emails. First insights land within 24 hours of connecting, and the model retrains daily. The lift is bigger for lists with geographically diverse subscribers (where a single send time cannot serve everyone) and smaller for lists concentrated in one time zone.
Does Seventh Sense hurt deliverability?
The opposite. Because Seventh Sense spreads sends over a configurable window (typically 24-72 hours), it avoids the sudden delivery spike that can trigger spam filters. Customers often report a deliverability improvement alongside the open-rate lift. The throttling is tunable per campaign if you need faster delivery for time-sensitive sends, and the Audience Recycling layer added since our first review automatically rests contacts whose predicted engagement falls below a threshold you set, which protects domain and IP reputation.
How does Seventh Sense compare to HubSpot built-in send time?
HubSpot built-in optimization sends all contacts at a single calculated best time for your list. Seventh Sense sends each contact at their personal best time, which is a meaningfully different approach. For lists under 1,000 contacts the difference is small; for lists over 10,000, the individual-level approach consistently outperforms.
Is Seventh Sense worth it for B2B companies?
Yes, B2B is a sweet spot. Business contacts have wildly different email habits (early risers, post-lunch checkers, end-of-day cleaners), and a one-size-fits-all send time misses a huge portion of the list. Seventh Sense shines in demand-gen nurture, event invitations, and thought-leadership newsletters.
📋 Good to know
About 5 minutes to install on HubSpot, about 20 on Marketo. Seventh Sense trains on your full engagement history rather than a recent window, and first insights and per-person profiles populate within 24 hours. Then toggle Seventh Sense as the send option in your normal campaign workflow.
SOC 2 Type II certified. GDPR and CCPA compliant. Engagement profiles surface inside the HubSpot CRM record and Marketo lead views; Seventh Sense acts as a scheduler rather than a sender, so your native reporting is unchanged. The vendor lists EU and regional data residency as coming in H2 2026.
The price steps automatically as your marketing contact count grows, in 5,000-contact increments. Move to Enterprise at 150,000 HubSpot contacts or 300,000 Marketo leads, or sooner if you need SSO, a dedicated CSM, or multi-portal management.
Very low. The interface mirrors HubSpot or Marketo, so existing users can start optimizing in minutes: the vendor quotes about a 5-minute HubSpot install and about 20 minutes on Marketo.
