The Endurance Group

What The Endurance Group does

The Endurance Group is a privately held, bootstrapped B2B growth execution firm headquartered in Portland, Maine, that has operated continuously since approximately 2000. The company sells professional services and AI-enabled tooling through three intertwined offerings: embedded sales execution (acting as the client's outsourced sales function), growth systems and operations (CRM, workflow, and process build-out), and applied AI implementation. It is a certified HubSpot Partner and serves clients primarily in B2B technology and SaaS, professional services and advisory firms, franchise and multi-location brands, PE-backed growth businesses, educational institutions and non-profits, and international companies entering the US market. Pricing is structured around an hour bank model at $150/hour, multi-year auto-renewing service subscriptions, and an application-only free 5-hour AI pilot for franchisors.

The Endurance Group's core proprietary products are Ernest, a configurable AI sales assistant that analyzes CRM data, generates personalized outreach, and crafts sales and marketing strategy, and Commonality, an AI relationship mapping tool that identifies shared connections between a client's team and target prospects to drive higher meeting conversion. These are complemented by a franchise-specific AI suite (AI Receptionist for inbound lead qualification, AI-powered onboarding integrated with DocuSign and HubSpot, AI sentiment prediction for ad creative, AI helpdesk bot, and an NPS feedback bot), a DMARC/email deliverability audit service, social capital analysis, and a US market entry service line. The technology stack is built on top of third-party AI and automation platforms — CustomGPT.ai, HubSpot Breeze, Zapier, Make, and DocuSign — with proprietary value added through domain configuration, prompt design, and the social capital methodology.

The company monetizes primarily through services hours, implementation projects, and subscription-style service banks, with no disclosed external funding, no public revenue, and a small core team of approximately 8–11 people led by founder and President Jim Sullivan, with second-generation leadership from Vice President of Client Excellence Conor Sullivan. Customer logos span roughly 17 named organizations across at least a dozen industries, with no single dominant account.

Name

The Endurance Group

Legal name

The Endurance Group

Website

https://theendurancegroup.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

The Endurance Group is a Portland, Maine-based B2B growth execution firm that combines embedded sales outsourcing, HubSpot CRM implementation, and applied AI tools (Ernest, Commonality, and a franchise AI suite) to drive pipeline and revenue for B2B tech, professional services, franchise, and international-market-entry clients.

Ownership category

akta.pro rank

Headquarters

HQ city

Portland

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Infrastructure

Revenue model

1. Consulting and Professional Services: The Endurance Group provides consulting services through an hour bank model where clients purchase service hours for strategy, implementation, builds, training, or ongoing support. They offer embedded sales execution, growth systems and ops services, and AI implementation consulting. Revenue is generated through service fees based on hours purchased.
2. HubSpot Implementation Services: As a certified HubSpot Partner, they provide implementation services including configuration of HubSpot Sales, Marketing, and Service Hubs, change management consultation, and team training/adoption support.

Pricing tiers

Go-to-market motion2 records

Distribution channels4 records

Marketing channels9 records

Core offering

The Endurance Group is a B2B growth execution firm that delivers embedded sales execution, growth systems consulting, and AI-powered sales and marketing tools. Core deliverables include proprietary AI products (Ernest for sales strategy and CRM analysis; Commonality for relationship mapping), franchise-specific AI solutions, HubSpot CRM implementation, and social capital-driven lead generation and outreach services.

Product overview

The Endurance Group operates as a B2B growth execution firm offering a suite of AI-powered sales and marketing products and services. The core product portfolio centers on three flagship AI tools: Ernest (AI sales leader for strategy, CRM analysis, and content generation), Commonality (AI relationship mapping/social capital tool), and an Automated LinkedIn and Email Outreach Platform. These are complemented by franchise-specific AI modules including an AI Receptionist for recruiting, AI-Powered Onboarding System (integrating DocuSign and HubSpot), AI Sentiment Prediction Tool, AI Helpdesk Bot, and NPS Feedback Bot. Supporting services include HubSpot Implementation (certified partner), DMARC + Email Deliverability Audits, Social Capital Analysis, and US Market Entry AI Solutions. The company also provides embedded sales execution and growth systems services. All offerings are delivered with an emphasis on practical, applied AI integrated with HubSpot CRM.

Differentiator

Problem solved

Functional benefit

Brands

• Ernest: Flagship AI sales tool that captures insights, analyzes markets, masters CRM data, and maps valuable business relationships. Can be customized with client content.
• Commonality

Products and services

• Ernest TEG's flagship AI sales tool that captures sales insights, analyzes markets, masters CRM data, maps business relationships, and crafts personalized sales and marketing strategies for B2B teams.
• Commonality AI relationship mapping tool that uncovers shared connections, experiences, and relationships between a client's team and key decision-makers, with claimed increases in meeting success rates.
• AI Solutions for Franchises Suite of AI tools for franchise and multi-location brands, including an AI receptionist for recruiting, AI-powered onboarding, sentiment prediction for ads, helpdesk bot, and NPS feedback collection.
• HubSpot Implementation Services Certified HubSpot Partner providing expert implementation of HubSpot Sales, Marketing, and Service Hubs; change management and team training; and AI integration to enhance HubSpot capabilities.
• Social Capital Analysis Social capital inventory and mapping service that analyzes organizational networks to identify shared connections, common experiences, and relationship opportunities between teams and target prospects.
• DMARC and Email Deliverability Audit Email authentication and deliverability service that scans domains for missing SPF/DKIM/DMARC configuration, checks blacklist status, sets up DNS records, and provides ongoing monitoring and human-readable reports.
• US Market Entry AI Solutions AI-powered consulting service for international companies entering the US market, leveraging Ernest for market analysis, automating culturally adapted outreach, and building social capital with US decision-makers.
• Embedded Sales Execution Embedded sales execution service where TEG acts as an extension of the client's team to create pipeline, run sales motions, and close deals, taking responsibility for revenue outcomes.
• Growth Systems and Ops Growth systems and operations consulting that builds the systems and processes behind the scenes to make revenue growth repeatable, including HubSpot workflow setup and sales operations fixes.
• HealthPost Genius AI-powered social media content generator for health and medical clients that creates a month's worth of compliant social media posts.

Quantifiable outcome

• 15x increase in chances of securing meetings through shared connection identification
• +6 more outcomes

Named customers19 records

Segments6 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration12 records

AI capability10 records

Feature9 records

Partnerships

Eight partnerships are on record, tiered core and supporting.

• HubSpotcoreTechnology or IntegrationThe Endurance Group is a certified HubSpot Partner, providing implementation, configuration, and training services for HubSpot Sales, Marketing, and Service Hubs. They leverage HubSpot's ecosystem for lead generation and have deep integration capabilities with HubSpot's platform, including AI tools like Breeze. Jim Sullivan, CEO, switched from Salesforce to HubSpot and subsequently became a partner.
• DocuSignsupportingTechnology or IntegrationIntegration partner for franchise onboarding automation. TEG integrates DocuSign with HubSpot and AI document readers to automate the onboarding process for new franchisees, enabling instant document sends and automated data extraction.
• CustomGPT.aisupportingTechnology or IntegrationTEG uses CustomGPT.ai to power their custom AI assistants for Meta-integrated applications. They offer AI solutions built on the CustomGPT platform that enables personalized AI agents for client use.
• ZapiersupportingTechnology or IntegrationIntegration option for franchise clients. TEG integrates with Zapier alongside HubSpot, Salesforce, FranConnect, and Make to connect various tools and automate workflows for franchise operations.
• SalesforcesupportingTechnology or IntegrationCRM integration option mentioned alongside HubSpot. TEG helps clients choose and implement the right CRM solution, with Salesforce as an alternative to HubSpot for enterprise clients.
• FranConnectsupportingTechnology or IntegrationFranchise-specific CRM integration option. TEG integrates with FranConnect as part of their franchise AI solutions stack, offering flexibility based on client existing tools.
• Make (formerly Integromat)supportingTechnology or IntegrationAutomation platform integration for franchise workflows. TEG uses Make alongside HubSpot, Salesforce, and FranConnect to build automated workflows for franchise operations.
• PisanosupportingTechnology or IntegrationCustomer experience platform integration mentioned as part of TEG's technology stack for franchise solutions, particularly for measuring customer experience in real time.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• WebFX: WebFX is a much larger full-service digital marketing and lead generation agency serving SMB and mid-market B2B clients; comparable to TEG's B2B lead generation and demand services but with a far broader service portfolio and headcount.
• Ignite Visibility: Ignite Visibility is a digital marketing agency offering SEO, paid media, and lead generation services to mid-market and enterprise B2B clients; overlaps with TEG's digital marketing, content, and lead-gen motion at larger scale.
• SalesLoft: SalesLoft is a leading sales engagement platform with multi-channel outreach, dialing, and AI-assisted cadences; overlaps with TEG's automated LinkedIn/email outreach offering as a scaled software competitor rather than services peer.
• ZoomInfo: ZoomInfo provides B2B intelligence, contact data, and sales engagement tooling widely used by TEG-style B2B sales teams; competes indirectly with TEG's social-capital and prospecting services as a scaled data/AI incumbent.

Direct peers

• Single Grain: Single Grain is a digital marketing agency specializing in SaaS and B2B growth with strong SEO/content/lead-gen capabilities; directly comparable to TEG's B2B technology and SaaS segment and similar size, with overlapping GTM motion.
• Sales Hacker (Sales Assembly): Sales Assembly is a sales training and enablement community/consultancy for B2B sales teams; comparable to TEG's embedded sales execution and growth enablement services for similar SaaS and tech client profiles.
• Lynton Web Solutions: Lynton is a HubSpot Elite Partner delivering implementation, sales enablement, and AI-driven marketing services; directly comparable to TEG's HubSpot implementation, CRM integration, and embedded execution model with similar partner-tier positioning.
• New Breed Marketing: New Breed is a HubSpot Solutions Partner focused on B2B revenue operations, sales enablement, and marketing technology implementation; close functional peer to TEG's HubSpot implementation, growth systems, and embedded execution services.

Emerging players

• Apollo.io: Apollo.io combines a B2B contact database with sales engagement and AI-assisted outreach; partial overlap with TEG's LinkedIn/email automation and social-capital prospecting use cases at the SMB/mid-market end.

Others

• Salesforce Consulting Partner (e.g., Simplus/Infosys): Large SI/consulting partners in the Salesforce ecosystem deliver similar CRM implementation, sales ops, and AI enablement work that TEG historically provided before its HubSpot pivot; useful adjacency reference for the CRM services lane.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/TheEnduranceGroupMaine
• LinkedInlinkedin.com/company/the-endurance-group
• Instagraminstagram.com/theendurancegroup
• TikToktiktok.com/@customaiguy?lang=en
• Xx.com/_EnduranceGroup

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about The Endurance Group