Vibeline

What Vibeline does

Vibeline (legally Appinity Inc., incorporated in Delaware, USA with a registered Dover address) is a B2B Go-To-Market services agency that builds and operates AI-powered outbound pipeline engines for other B2B companies. Its core offering is organized around three productized engines: the Outbound Engine (the required foundation delivering ICP definition, enriched account datasets, multi-tier email and LinkedIn sequences, CRM sync, and weekly optimization), the Content Engine (an add-on organic content and LinkedIn growth module), and the ABM Engine (an add-on signal-triggered account-based marketing module for multi-stakeholder deals). Underpinning these is the GTM Flywheel, an 18-node methodology across Define, Enrich, Activate, and Convert phases, supported by a 50-play public GTM Playbook Library and an ICP versioning system (currently ICP_v4 / Cadence v4.2) that retrains weekly on reply data.

The business model combines a bounded Pilot engagement of typically 3 to 6 months, priced in individual Engagement Agreements, with an optional month-to-month Lifecycle Retainer for ongoing scoring recalibration, sequence retirement, and deliverability operations. Delivery is offered either Done-for-you (Vibeline operates the stack) or Done-with-you (built alongside the client team with full tooling and runbook transfer at handover); both paths conclude with the client owning the system. The customer base is segmented horizontally across founder-led startups, SaaS companies with marketing or rev-ops functions, marketing/GTM agencies, and enterprise or committee-buying organizations, with Q3 2025 marked as a deliberately limited pilot cohort. Operational scale is founder-led and small; no headcount, revenue, funding, or case studies are disclosed.

The technology stack layers off-the-shelf platforms — Instantly.ai for email outreach, Heyreach/Aimfox for LinkedIn automation, Apollo.io, Clay, and LinkedIn Sales Navigator for enrichment, Taplio for content, and HubSpot or Salesforce as CRM — over AI-assisted research, a Content RAG agent accessible via Slack, and per-segment predictive lead scoring retrained weekly. Additional client-owned tools such as 6sense/Demandbase, Bombora, RB2B/Factors.ai/Warmly, Phantombuster, and Webflow/Framer extend into intent, visitor de-anonymization, and collateral production. Vibeline's primary marketing channels are its public website, the Playbook Library, organic LinkedIn, and Calendly-booked discovery calls with founder J. Morvay; no paid acquisition is in use.

Name

Vibeline

Legal name

Appinity Inc.

Website

https://coldfinity.com

Company type

Private

Operating status

Operating

Short description

Vibeline is a B2B GTM services agency that builds and operates AI-powered outbound pipeline engines through structured 3–6 month pilot engagements and optional monthly Lifecycle retainers, targeting founder-led startups, SaaS firms, marketing agencies, and enterprise buyers.

Ownership category

akta.pro rank

Headquarters

HQ city

Dover

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, Marketing or Sales, Operations, Others

Revenue model

1. Pilot Engagement: Bounded, scoped initial engagement (typically 3 months for standard sales cycles, 4-6 months for longer cycles) to define ICP, build datasets, and run first campaigns. One project with a clear endpoint — not a retainer in disguise. Fees set in Engagement Agreement.
2. Lifecycle Retainer: Optional ongoing monthly maintenance engagement after pilot completion. Covers weekly dataset refresh, scoring recalibration, sequence retirement, and deliverability ops. Priced at a fraction of pilot base fee. Cancel any month but client keeps all data and tooling.
3. Add-on Modules: Adjacent capabilities added one at a time as scoped engagements: LinkedIn, ads, content syndication, newsletter ops, demo collateral, customer-success automations. Each scoped separately before work begins.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Vibeline is a B2B go-to-market agency that builds and operates outbound pipeline engines for other B2B companies. Through a structured 3–6 month Pilot engagement, it defines the client's ICP, enriches account datasets, runs multi-tier (Tier 1/2/3) outbound sequences across email and LinkedIn, syncs activity to HubSpot or Salesforce, and hands the system over with full tooling ownership and operating runbooks. Optional add-on modules (Content Engine, ABM Engine) and an ongoing monthly Lifecycle retainer extend the engagement after the pilot.

Product overview

Vibeline is a GTM services agency that builds and operates three distinct AI-powered GTM engines for B2B companies: the Outbound Engine (the required foundational product covering ICP definition, enriched account datasets, multi-tier outbound sequences, CRM sync, and weekly optimization), the Content Engine (an add-on LinkedIn and blog content module with AI-assisted human-reviewed creation), and the ABM Engine (an add-on signal-triggered multi-stakeholder account-based marketing module). All three engines are delivered through a structured Pilot engagement, maintained via an optional monthly Lifecycle retainer, and supported by a library of 50 GTM plays documenting reusable plays and playbooks. The GTM Flywheel is the underlying four-phase operational methodology connecting 18 production nodes across Define, Enrich, Activate, and Convert phases. Vibeline's AI capabilities span AI-assisted account research, generative content creation (including a RAG agent and data-trained content engine), per-segment lead scoring with weekly retraining, and automated reply routing. Two delivery models are offered: done-for-you (Vibeline operates the stack) and done-with-you (built alongside the client team with full handover).

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• Reply rate: 18.4% (sample from live ICP_v4.json on homepage)
• +13 more outcomes

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration17 records

AI capability8 records

Feature7 records

Partnerships

Seven partnerships are on record, tiered core and add-on.

• Instantly.aicoreTechnology or IntegrationEmail outreach and sequencing platform used in the outbound engine. Covered in all retainers (DFY & DWY) as agency-wide tool Vibeline already licenses.
• Apollo.io (agency tier)coreTechnology or IntegrationData enrichment and contact sourcing platform used at agency tier pricing. Covered in all retainers as agency-wide tool.
• Clay (basic credits)coreTechnology or IntegrationData enrichment and automation platform. Basic credits covered in retainer; high credit volume requires client-owned license.
• HubSpot StartercoreTechnology or IntegrationCRM platform used for account tiering, scoring, and pipeline management. Covered in all retainers.
• Heyreach / AimfoxcoreTechnology or IntegrationLinkedIn outreach and automation platforms. Covered in all retainers as agency-wide tools.
• Taplio (basic)add-onTechnology or IntegrationLinkedIn content management. Basic version covered in DFY retainer. Taplio Pro/Shield requires client ownership in DWY.
• LinkedIn Sales NavigatorcoreTechnology or IntegrationUsed for account sourcing, contact discovery, and engagement monitoring across multiple plays including community-led outbound, influencer engagement, and competitor followers.

Scale indicators7 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Belkins: Belkins is a B2B lead generation and appointment-setting agency specializing in cold email and LinkedIn outbound for SaaS and B2B clients. Directly comparable to Vibeline in service model, channel mix, and target buyer profile.
• CIENCE: CIENCE is a B2B outbound sales agency offering SDR-as-a-service, lead research, and multi-channel outbound campaigns. Operates in the same GTM agency space as Vibeline with overlapping tooling and customer segments.
• Martal Group: Martal Group is a B2B sales agency providing lead generation, outbound SDR, and sales development services to SaaS and technology companies. Competes directly with Vibeline for the same B2B outbound pipeline generation budget.
• SalesRoads: SalesRoads is an outsourced B2B sales agency offering SDR teams and appointment setting for technology and professional services companies. Similar outbound execution model and SMB/mid-market client base as Vibeline.
• Outbound Squad: Outbound Squad is a B2B lead generation agency focused on cold email, LinkedIn outreach, and appointment setting for SaaS and B2B companies. Directly competes with Vibeline for the same outbound pipeline engagement budget.

Broad incumbents

• Demandbase: Demandbase is an enterprise ABM platform offering account identification, intent data, advertising, and sales engagement. Overlaps with Vibeline's ABM engine offering but as a broader, larger-scale incumbent platform rather than a service.
• 6sense: 6sense is an enterprise revenue intelligence platform with intent data, ABM orchestration, and predictive analytics. Comparable to Vibeline's ABM and intent signal modules but operates as a software platform serving larger enterprises.
• Chili Piper: Chili Piper is a SaaS platform for scheduling, inbound routing, and revenue orchestration used by sales teams. Adjacent to Vibeline's CRM and meeting-routing capabilities but as a software tool rather than a delivery service.

Emerging players

• GrowthGen: GrowthGen is a B2B growth agency providing outbound lead generation, sales enablement, and content marketing services. Comparable service mix to Vibeline but smaller scale and earlier-stage positioning.

Others

• Instantly.ai: Instantly.ai is the email outreach and deliverability platform Vibeline uses as a core technology partner. As a vendor/tool rather than a direct competitor, it represents both a partnership asset and a potential vertical-integration risk for the agency.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/vibeline_gtm
• LinkedInlinkedin.com/company/vibeline-gtm

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Vibeline