Rejoose
Rejoose is a Danish SaaS company that provides EY-assured, activity-based carbon data for IT products and invoices via APIs and platforms (e.tool, e.product, e.voice), serving IT resellers, distributors, ITADs, system integrators, and enterprise IT buyers across 108 countries.
- Company typePrivate
- Founded2017
- HeadquartersFrederiksberg, Denmark
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Rejoose does
Rejoose ApS is a Danish SaaS company founded in 2017 as a spinoff from Eoptimo, providing automated, audited carbon data for IT products and transactions. Its core offering is a proprietary carbon database — currently covering 15 million IT products, 18 million+ SKUs, and 900 million+ datasets across roughly ten years of hardware generations — validated to ISAE 3000 standards by EY and methodology-verified by PNZ Advisory against the GHG Protocol and CSRD frameworks. The platform exposes this data through several products: e.tool (carbon reporting and energy analysis), e.product and e.product+ (API-delivered product-level carbon data for e-commerce and system integrators), e.voice and e.voice circularity (invoice-level carbon data, including avoided emissions for refurbishment and recycling), and two administrative workspaces, e.hub and e.insights, that support CSRD reporting and customer-facing reports.
The company sells primarily through a channel-first GTM anchored on an exclusive European distribution agreement with TD SYNNEX and a direct manufacturer partnership with Lenovo, supplemented by ITAD, reseller, and system integrator partnerships across Europe, the UK, the US (which surged to third-largest market in 2025), and Australia. Pricing combines per-seat subscriptions for e.tool, per-Manufacturer-Part-Number unit pricing for e.product, and transaction-based annual fees for e.voice, with multi-year contracts, a 99% uptime SLA, and up to 5% annual price escalators or HICP indexation. By 2025 the platform had delivered carbon data for 1.15 billion IT devices covering 9.7 billion kg CO2e, with end customers in 174 countries reached via resellers.
Rejoose remains privately held with grant funding from the EU/Danish Innovation Fund (2023), an 11-50 employee base headquartered in Frederiksberg, and offices in Copenhagen, Antwerp, and London. Operational leadership is concentrated in four named executives (Thomas Mardahl, CEO & Founder; Matthew Ruskin, CCO; plus channel and partnerships leads), and the company operates without disclosed institutional VC backing, institutional revenue, or subsidiaries.
Rejoose firmographics
Firmographics- Name
- Rejoose
- Legal name
- Rejoose ApS
- Website
- https://rejoose.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Rejoose is a Danish SaaS company that provides EY-assured, activity-based carbon data for IT products and invoices via APIs and platforms (e.tool, e.product, e.voice), serving IT resellers, distributors, ITADs, system integrators, and enterprise IT buyers across 108 countries.
- Ownership category
- akta.pro rank
Rejoose industry classification
Industry- Product category
- Carbon Data Software for IT
- NAICS
- Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (518210), Custom Computer Programming Services (541511)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- ESG/Sustainability Reporting & Disclosure Platforms (EUABAEAB)
- akta.pro secondary industries
- Data Assurance, Audit & Attestation (ISAE 3000/3410, SOC, Chain-of-Custody) (EUABACAJ), Reuse & Resale / Recommerce Operations (EUAIANAC), Trade-in, Buyback & Instant Cashout Recommerce (CRAFAGAL)
Keywords
Where Rejoose is headquartered
LocationHeadquarters
- HQ city
- Frederiksberg
- HQ country
- Denmark
- HQ region
- Europe
Offices4 records
Markets served
Rejoose business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Operations, Infrastructure
Revenue model
- e.tool Platform Subscription: Per-seat subscription license for e.tool platform access. Includes onboarding, training, and platform access. Billed monthly or annually.
- e.product/e.product+ Unit Pricing: Pricing calculated by unique product identifiers (Manufacturer Part Numbers) per End Customer per contract year. Each unique product identifier requested constitutes one unit. Data licensed for use within original contract year only.
- e.voice/e.voice Circularity Platform Access: API access with maintenance and support for invoice-level carbon data delivery. Includes e.voice and e.voice circularity platforms. Fees may increase up to 5% annually or per HICP index.
- Enterprise API Licensing: Licensing for system integrators to access product data via batch API requests. Data usage limited to specified End Customer. Multi-year contracts with annual fee adjustments.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Monthly | e.tool Essential - Basic carbon reporting for small teams |
| Subscription | Annual | e.tool Professional - Enhanced features for larger organizations |
| Unit Pricing | Multi-year contract | e.product - Single CO2 value per MPN for e-commerce |
| Unit Pricing | Multi-year contract | e.product+ - Full LCA breakdown including refurbishment impact |
| Transaction based/ take rate | Annual | e.voice - Invoice-level carbon data for accounting |
| Transaction based/ take rate | Annual | e.voice Circularity - Carbon documentation for ITADs |
Go-to-market motion3 records
Distribution channels6 records
Marketing channels8 records
Rejoose product offering
Product offeringCore offering
Rejoose provides automated, activity-based carbon and energy data for IT products and transactions through a SaaS platform and APIs. Its products (e.tool, e.product, e.product+, e.voice, e.voice circularity, e.insights, e.hub) deliver product-level, invoice-level, and circularity carbon data to IT resellers, distributors, ITADs, system integrators, and enterprise IT buyers for ESG, CSRD, and GHG Protocol reporting.
Product overview
Rejoose is a SaaS company offering a platform of integrated carbon data products for the ICT industry. The core offering spans four main solutions: e.tool (carbon reporting and energy efficiency analysis platform for presales and consultancy), e.product/e.product+ (API-delivered product-level carbon data for e-commerce and system integrators), e.voice (invoice-level carbon data via API or file upload), and e.voice circularity (carbon data for refurbishment and circular lifecycle for ITADs). These are supported by two administrative platforms: e.insights (a customer-facing carbon workspace for report generation) and e.hub (a platform for managing customers and CSRD reporting). All solutions draw from the same underlying Rejoose carbon database, which as of 2025 covers over 15 million IT products and 900 million datasets.
Differentiator
Problem solved
Functional benefit
Products and services
- e.tool SaaS platform for carbon reporting and energy efficiency analysis providing activity-based carbon data for IT infrastructure covering 17 million products from more than 30,000 manufacturers. Used for pre-sales activities, baseline reporting, scenario analysis, and energy efficiency consultancy.
- e.product Carbon data API delivering product-level data for e-commerce platforms and system integrators across millions of IT product SKUs. Provides a single country-specific CO2 value per Manufacturer Part Number (MPN), delivered automatically via API with daily updates.
- e.product+ Extended version of e.product providing LCA-based Product Carbon Footprint broken down across full lifecycle stages (production, country-specific use phase, transportation, end-of-life) plus refurbishment impact data including avoided emissions and avoided e-waste from refurbishment and recycling.
- e.voice The carbon equivalent of a financial invoice, delivering carbon data at invoice level for every financial transaction via API or file upload. Enables customers to track sustainability progress per transaction and supports internal reporting as well as reporting for end customers.
- e.voice circularity Delivers carbon impact data for refurbished IT products and circular lifecycle scenarios, quantifying avoided emissions from refurbishment and reuse, and avoided e-waste from recycling. Designed for ITADs to document circular value and support customer sustainability reporting; integrates with Blancco for ITAD workflows.
- e.insights Customer-facing carbon workspace that consolidates carbon data and empowers customers to generate tailored reports across all purchases. Connected to e.voice and e.voice circularity, it allows customers to input their own specific data to customize carbon insights.
- e.hub Administrative platform for resellers, distributors, and ITADs to manage customers and perform their own administrative tasks, including mandatory CSRD 'Use of Sold Products' reporting based on all e.voices and e.voice circularities generated for customers.
Quantifiable outcome
- 100 million+ kg CO2e avoided through ITAD reuse in 2025
- +3 more outcomes
Companies that use Rejoose
Customer profileNamed customers6 records
Segments5 records
Ideal customer profiles6 records
Rejoose technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
Feature5 records
Rejoose partnerships and signals
Strategic signalPartnerships
Ten partnerships are on record, tiered core, regional and major.
- Layer IQcoreData partnership bringing activity-based environmental reporting and critical mineral intelligence onto Layer IQ's Asset IQ platform. Rejoose's LCA dataset and Recycled/Resource dataset integrated to serve OEMs, enterprises, and ITAD partners across the global IT channel.
- TD SYNNEXcoreGlobal partnership with TD SYNNEX (NYSE: SNX), a leading global IT distributor. Rejoose to embed SKU-level carbon insights into TD SYNNEX's procurement and reporting processes across Europe. TD SYNNEX serves as exclusive distributor of Rejoose's Sales and Accounting solutions in Europe, supporting all TD SYNNEX partners and their clients.
- LenovocoreStrategic partnership making Lenovo the first global IT hardware vendor to establish structured partnership with Rejoose. Enables direct exchange of validated emissions data across Lenovo's full product portfolio. Direct data exchange improves accuracy and delivery speed for end-users, channel partners, and vendors.
- PonyUp for GoodregionalPartnership with Australian social enterprise PonyUp for Good to provide advanced carbon tracking and ESG metrics tailored to the lifecycle of IT assets.
- SCCmajorSCC announced new European partnership with Rejoose to boost ESG strategy with green offerings. Strengthens SCC's approach to IT carbon data and sustainability reporting.
- Transputec LtdregionalTransputec partnered with Rejoose to provide customers with detailed carbon emissions information for purchased products.
- iasset.commajorPartnership announced to 'transform' the corporate sustainability space for channel players. Both sides claim the partnership will provide enhanced sustainability services.
- Arete Zero CarbonregionalArete Zero Carbon manages the UK and Ireland market for Rejoose, boosting channel decarbonisation efforts.
- EY (Ernst & Young)coreEY engaged for independent validation of Rejoose's carbon data methodologies and platform through ISAE 3000 (Revised) assurance engagement. Validates quality, robustness, and auditability of carbon data.
- PNZ AdvisorycorePNZ Advisory independently verifies data methodologies applied across Rejoose platform and datasets. Confirms alignment with GHG Protocol and other recognized frameworks.
Scale indicators12 records
Recent moves7 records
Expansion highlights7 records
Rejoose competitors and assessment
Company assessmentDirect peers
- Greenly: Greenly is a carbon accounting platform with product-level footprint capabilities and a strong European SMB and mid-market presence. It overlaps with Rejoose on product- and invoice-level carbon data and competes for similar IT reseller and enterprise buyers.
- Planetly (PwC): Planetly is a carbon accounting platform focused on product- and company-level emissions data, acquired by PwC in 2022. It overlaps directly with Rejoose's e.product and e.voice offerings and competes for IT-vertical carbon data demand.
- Normative: Normative is a carbon accounting engine for product- and corporate-level Scope 3 emissions. It is a direct peer in the product-carbon-footprint category where Rejoose's e.product and e.product+ compete, and has a strong European customer base overlapping Rejoose's Nordics/UK/EMEA focus.
- Circular Computing: Circular Computing is a refurbished IT hardware vendor that quantifies carbon savings on every laptop using validated lifecycle data. It is a direct peer in the IT circularity and avoided-emissions space where Rejoose's e.voice circularity competes.
Emerging players
- SINAI Technologies: SINAI Technologies is a decarbonization platform focused on enterprise carbon accounting and transition planning. It is an emerging player with overlapping capabilities in activity-based carbon data, comparable to Rejoose's e.tool and e.voice offerings for enterprise IT buyers.
Broad incumbents
- South Pole: South Pole is a major climate solutions provider offering carbon accounting, advisory, and carbon credit services globally. It is a broad incumbent competing in the same corporate carbon data and IT-vertical demand pool as Rejoose.
- Watershed: Watershed is a leading enterprise carbon accounting platform with significantly more capital and broader scope. It is a broad incumbent moving into product- and category-level data, where Rejoose specializes, and is a credible competitor for large enterprise IT carbon reporting deals.
- Sweep: Sweep is a carbon management platform with strong product- and value-chain-level carbon data capabilities, similar in scope to Normative and a comparable competitor for IT and product category data.
- Workiva: Workiva is an enterprise ESG and sustainability reporting platform used by large corporates for CSRD, SEC, and other disclosures. It is a broad incumbent in ESG disclosure infrastructure that competes for the same compliance-driven carbon reporting budget as Rejoose.
- Persefoni: Persefoni is an enterprise climate management and carbon accounting platform serving large corporates across multiple sectors. It is a broad incumbent in carbon accounting and a comparable competitor for IT-vertical scope 3 and product footprint demand.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
Rejoose social profiles
Digital presenceRejoose compliance and trust
Trust signalCompliance7 records
Rejoose financial estimates
Financial estimateRevenue estimate
Valuation estimate
Rejoose leadership team
Management profileNumber of profiles
Profiles7 records
Rejoose funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Rejoose M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Rejoose
What does Rejoose do?
Rejoose provides automated, activity-based carbon and energy data for IT products and transactions through a SaaS platform and APIs. Its products (e.tool, e.product, e.product+, e.voice, e.voice circularity, e.insights, e.hub) deliver product-level, invoice-level, and circularity carbon data to IT resellers, distributors, ITADs, system integrators, and enterprise IT buyers for ESG, CSRD, and GHG Protocol reporting.
Is Rejoose a public or private company?
Rejoose is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Rejoose founded?
Rejoose was founded in 2017. It employs 11 to 50 people.
Where is Rejoose based?
Rejoose is headquartered in Frederiksberg, Denmark, in the Europe region.
How does Rejoose make money?
Four revenue lines are on record. e.tool Platform Subscription is the primary driver. The others are e.product/e.product+ Unit Pricing, e.voice/e.voice Circularity Platform Access and enterprise API Licensing.
Who are Rejoose's main competitors?
Direct peers on record are Greenly, Planetly (PwC), Normative and Circular Computing. SINAI Technologies is listed as an emerging player. Broad incumbents are South Pole, Watershed, Sweep, Workiva and Persefoni.
Does Rejoose have an API?
Yes. Rejoose offers API access for its e.voice, e.voice circularity, e.product, and e.product+ platforms. The APIs enable automated, invoice-level carbon data delivery (e.voice), product-level carbon data via API with daily updates (e.product), and circularity data. Data is delivered via API integrations, with a 99% uptime SLA commitment. The Service Level Agreement (SLA) specifies 99% uptime excluding scheduled maintenance, with critical issues addressed within 24 hours. API access is granted through non-exclusive, non-transferable licenses. For e.product, data is for display purposes only and may not be used for further calculations, distribution, or resale. Developer documentation is at rejoose.com/submission-for-rejoose-knowledgebase.
What industry is Rejoose in?
Rejoose's product category is Carbon Data Software for IT. Its primary akta.pro industry code is EUABAEAB, ESG/Sustainability Reporting & Disclosure Platforms, with a secondary code of EUABACAJ, Data Assurance, Audit & Attestation (ISAE 3000/3410, SOC, Chain-of-Custody). Its NAICS code is 518210 and its SIC code is 7372.