Comment échanger des pièces comptables avec ses clients sans passer par le mail ?

Par un lien de partage sécurisé Voltn : chiffré, protégé par mot de passe ou code SMS, avec date d'expiration et traçabilité de chaque téléchargement. La pièce jointe non sécurisée devient inutile.

Comment collecter les pièces de ses clients pendant la période fiscale ?

Avec un lien de dépôt sécurisé par client : factures, relevés et justificatifs arrivent dans un espace dédié, sans création de compte. Chaque fichier est analysé par antivirus et classé automatiquement dans le bon dossier.

Comment transmettre des bulletins de paie de façon confidentielle ?

Par un envoi protégé par mot de passe ou code SMS, avec date d'expiration. Seul le destinataire authentifié accède au document, et chaque consultation est tracée.

Voltn s'intègre-t-il aux outils d'un cabinet comptable ?

Oui. Des connecteurs natifs pour Outlook, Teams et Google permettent d'envoyer et recevoir des fichiers sans quitter votre messagerie, et une API permet l'intégration à vos logiciels de production.

Où sont hébergées les données ?

Exclusivement en France, dans des data centers conformes aux normes Tier 3+ et Tier 4. Aucun transfert n'est réalisé hors de l'Espace économique européen, hors de portée du Cloud Act.

Secure your accounting documents in a sovereign cloud.

Centralize balance sheets, documents, and payslips in an environment hosted in France, and communicate with your clients without using email.

We’ve done the math, and we are definitely the solution you need.

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ISO 27001 & ISO 9001 certifications

Advanced protection (encryption, antivirus, traceability)

100% French hosting

Accounting professionals face critical challenges.

Balance sheets, tax returns, payslips, and audit files: accounting professionals handle the economic privacy of their clients. Voltn (formerly NetExplorer) hosts these documents in a sovereign cloud designed to protect them.

Confidentiality of financial and social data

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Accounts, compensation, and asset statements: a client file contains everything that must never be leaked. Every document involves professional secrecy and the trust that forms the foundation of the relationship.

The end of email for sensitive documents

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The profession itself recommends moving away from email for sensitive data. An attachment is neither end-to-end encrypted, nor traceable, nor revocable once sent.

Peak activity and document collection

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Tax season, year-end closings, and filings: client documents must arrive quickly, complete, and in the right place. Every follow-up and every misplaced document costs teams hours of valuable time.

Fraud and cyberattacks

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Fake bank details, identity theft, and email compromise: financial flows attract fraudsters, and firms are on the front line. Securing communications has become a vital protection for both the firm and its clients.

Traceability and professional accountability

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Audits, litigation, statutory audits: you must be able to prove who sent which document, to whom, and when. Document traceability protects the professional's liability.

GDPR

The Voltn sovereign cloud processes its clients' personal data solely within the scope of the services provided. Authorized personnel handling this data are subject to a legal duty of confidentiality.

It guarantees

Protecting the personal data of applicants, tenants, and buyers

A binding European legal framework

Effective rights for data subjects

Who is affected?

Accounting and audit firms

HR and payroll departments

Corporate finance departments

Risks of non-compliance

GDPR penalties

Corporate liability exposure

Loss of client trust

The ISO 27001 standard

ISO 27001 certification confirms an audited and proven information security management system. At Voltn, it covers the entire platform, from the data center to the software.

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It guarantees

Information security certified by an independent audit

Cyber risk management

Continuous improvement of security processes

Who is affected?

Firms that must demonstrate their security level to their clients

Organizations handling sensitive financial data

Finance departments subject to an IT security policy

Risk in the event of non-compliance

No audited evidence in the event of an incident

Less reassurance for major accounts

Difficulty demonstrating risk management

The ISO 9001 standard

ISO 9001 certification confirms Voltn's rigorous organization in meeting client needs. It demonstrates a commitment to service quality and continuous improvement.

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It guarantees

Structured and audited service processes

Consistent service quality

Measured continuous improvement

Who is this for?

Firms looking for a reliable long-term service provider

Organizations requiring responsive support, especially during tax season

Management teams evaluating their suppliers

Risk of non-compliance

No formal service level guarantees

Unstructured support when issues arise

A supplier relationship without measurable commitments

eIDAS 2

The eIDAS2 regulation governs digital identity and electronic signatures in Europe. With Voltn Sign, your engagement letters, mandates, and certificates are signed within a legally recognized framework.

It guarantees

The legal validity of electronic signatures

A European framework for digital identity

Reliable digital exchanges

Who is this for?

Firms for their engagement letters and mandates

HR departments for contracts and certifications

Finance departments for their contractual commitments

Risks of non-compliance

Documents with no legal standing in the event of a dispute

Questionable signatures

The high cost of returning to paper

The Numérique Responsable label

The Numérique Responsable label certifies Voltn's commitment to digital sustainability. This is a consistent step as the company supports its clients with sustainability reporting.

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It guarantees

A measured and audited commitment to more sustainable digital practices

Infrastructure optimized to reduce its footprint

A continuous improvement approach

Who is affected?

Firms supporting their clients with CSRD

Organizations incorporating CSR criteria into their procurement

Groups subject to non-financial reporting

Risk of non-compliance

A missing digital link in CSR reporting

A disadvantage regarding investor requirements

The inconsistency between sustainability consulting and energy-intensive tools

1. Security of client files

Data encryption and antivirus protection
Protection against intrusions and leaks

2. Regulatory compliance

HDS certification across all operations
GDPR alignment and eIDAS-compliant signatures

3. Data sovereignty

Hosting exclusively in France
Protection against extraterritorial legislation

4. Access management and traceability

Granular access rights
Full activity history

5. Secure collaboration

• Controlled sharing with clients, auditors, and partners
and real-time document validation

The pillars of Voltn

Voltn hosts and secures documents for accounting and finance professionals in a trusted, end-to-end controlled cloud: we develop the software and operate the infrastructure.

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Solutions tailored to your needs

Voltn Share secures your document exchanges with clients and partners. Voltn Workspace centralizes your files and collaboration within your firm or finance department.

Voltn Share

Voltn Workspace

External file sharing

Secure sharing link

Replace email attachments with an encrypted link, protected by a password or SMS code, with an expiration date. The financial statements you send remain accessible for as long as you choose, then automatically expire.

Secure upload link

Your clients can upload invoices, statements, and supporting documents to a dedicated space without needing to create an account. Every file is scanned for viruses and automatically filed in the correct client folder.

Send files without size or format limits

Send tax returns, FEC exports, and complete work files via a single link. No more splitting files across multiple emails.

Full traceability of all exchanges

Every link is unique and timestamped. You can prove who received which document and when—a vital safeguard in the event of an audit or dispute.

Custom portal branded to your firm

Your clients exchange documents via a portal branded with your logo and domain name. Your firm's professionalism is evident from the very first interaction.

Discover Voltn Share

The enterprise file platform

Granular access control by client file

Assign precise permissions to each employee, manager, or partner with 7 levels of access rights. The payroll department won't see audit files, and vice versa.

Real-time co-editing

Collaborate on forecasts, reports, and dashboards directly in Excel, Word, and PowerPoint. Maintain a single, up-to-date version of your files, even during closing periods.

Version history and anti-deletion trash bin

Every document retains its full version history, and deleted files can be recovered for as long as you choose. No data is lost between revisions.

Strong authentication

Secure access with two-factor authentication and connect the platform to your directory. Accounts automatically sync with employee onboarding and offboarding, seamlessly.

Outlook, Teams, and Google connectors

Send and receive files without leaving your email or video calls. Your workflow remains the same, only more secure.

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Practical applications for accounting professionals

Accounting firm

Invoices, bank statements, receipts: every client file evolves with the documents that arrive, often by email, sometimes as photos, and rarely complete on the first try. During tax season, collection becomes a race against the clock.

Voltn structures the workflow: one upload link per client, documents automatically analyzed and filed, reminders based on what is actually missing, and deliverables sent via secure links rather than attachments.

Current state

Collecting client documents and delivering reports, especially during tax season

Solution

Upload link per client +
secure sharing with expiration dates

Benefit

End of email for
sensitive documents

Audit & statutory auditing

An audit engagement relies on the intensive exchange of supporting documents between the team, the audited entity, and sometimes other stakeholders. Confidentiality is absolute, traceability is mandatory, and the working file must remain accessible for years.

Voltn manages the engagement: a partitioned space for each mandate, document collection via upload links, and a timestamped log documenting every access and transmission.

Current state

Exchange of supporting documents with audited entities

Solution

Mandate-specific partitioned spaces with exportable action logs

Benefit

Confidentiality of
mission + traceability
legally binding

Payroll & HR

Payslips, employment contracts, sick leave notices, and certificates: the HR department handles the most personal data imaginable for dozens of client companies and their employees. Send a payslip to the wrong recipient, and you have a GDPR incident.

Voltn secures the entire chain: partitioned workspaces for each client, transfers protected by password or SMS code, and electronic contract signing with Voltn Sign.

Current state

Distribution of payslips and confidential HR documents

Solution

Partitioned workspaces + transfers protected by password or SMS code

Benefit

Confidentiality of

+ GDPR compliance protected employees

Corporate Finance Department

Closings, reporting, and managing relationships with auditors, banks, and parent companies: a finance department orchestrates sensitive document flows with strict deadlines. Files are sent as attachments, versions diverge, and the audit trail has to be reconstructed manually. Voltn centralizes everything: one workspace per cycle or entity, real-time co-editing on working files, and tracked exchanges with auditors and financial partners.

Voltn secures the entire chain: partitioned workspaces for each client, transfers protected by password or SMS code, and electronic contract signing with Voltn Sign.

Current state

Closings and financial document exchanges with auditors, banks, and parent companies

Solution

Cycle-based workspaces with real-time co-editing and tracked sharing

Benefit

Single version
files + audit trail
documented

All use cases

What about other sectors?

From healthcare to logistics, every sector has its own security, privacy, and compliance rules. Voltn adapts to them, not the other way around.

Consulting

Do you handle confidential information? Your clients' secrets are safe in our trusted cloud.

Discover the Consulting sector

Transport and Logistics

Mobile and high-performance solutions from the warehouse to the point of delivery.

Discover the Transport & Logistics sector

Healthcare & Medical

HDS-certified, our solutions take care of health data just as you take care of your patients.

Discover the Healthcare & Medical sector

Discover all sectors

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96% of our clients recommend us

Laurence Lahousse

Administrative Manager, Cabinet ALCYON

“The French institute of chartered accountants recommended no longer using email to transfer sensitive data, because email systems are not always secure. Thanks to Voltn's secure sharing link, we were able to stop doing so and comply with that recommendation.”

Use cases

Solutions for every sector

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FAQ

Where is the data hosted?

Exclusively in France, in data centers that meet Tier 3+ and Tier 4 standards. No data is transferred outside the European Economic Area, keeping it beyond the reach of the Cloud Act.

Does Voltn integrate with accounting firm tools?

Yes. Native connectors for Outlook, Teams, and Google allow you to send and receive files without leaving your email, and an API enables integration with your production software.

How can I send payslips confidentially?

By sending them protected by a password or SMS code, with an expiration date. Only the authenticated recipient can access the document, and every time it is viewed, it is tracked.

How can you collect client documents during tax season?

With a secure upload link for each client: invoices, statements, and supporting documents arrive in a dedicated space, with no account creation required. Each file is scanned by antivirus and automatically filed in the correct folder.

How can you exchange accounting documents with clients without using email?

Via a secure Voltn sharing link: encrypted, protected by a password or SMS code, with an expiration date and tracking for every download. Unsecured attachments are now a thing of the past.

Vintage office chair with a pile of folders and a beige corded telephone, handset off the hook on red carpet.

But let's be honest, our cloud-based file storage and sharing solution is much easier.

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