Secure File Sharing for Client Communications

Protect client relationships with secure file sharing that respects confidentiality. My MX Data ensures controlled access for every exchange.

Deliver proposals, reports, and private data in a way that keeps trust and compliance intact, with clear records of who accessed what.

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As trusted by leading automotive brands

Aston Martin
Jaguar Land Rover
Lotus
Polestar
British Institute of Lasers
M0VE
WIWY
Aston Martin
Jaguar Land Rover
Lotus
Polestar
British Institute of Lasers
M0VE
WIWY

How MX Stacks Up Against the Competition

While WeTransfer gets files to their destination, My MX Data gets them there with locked encryption, controlled access and auditable logs so you can prove compliance at any point.

This is shown in Security & Compliance, File Control, Collaboration and Large File Delivery.

✅Client-Ready Quantum Protection – MX uses its ASR methodology to keep client exchanges private, even against emerging quantum risks. ℹ️ What does this mean?ASR (Anonymise, Shard, Restore) turns files into anonymised shards, transports them across isolated secure routes, and restores them only for verified clients, going beyond standard AES-256 defence.

✅Auditable Client Access – Every view, comment, and download is time stamped for dependable records during engagements.

✅Aligned with GDPR, UK DPA & ISO 27001 – Upholds strict permissions and encryption in client communications.

❌WeTransfer stores files unencrypted at rest, which undermines confidentiality with clients.

❌Google Drive and Dropbox need policy hardening to satisfy regulated client workflows.

Security & Compliance

✅Controlled Named User Access – Sharing is limited to authorised accounts, keeping files out of unauthorised hands.

✅Regional Data Storage Choice – Pick where your data resides to stay compliant with legal obligations.

🟡Basic File Features – Uploading, downloading, and tracking are included, without full DMS tools.

❌No Live Sync – Built for secure transactions, not constant updates.

File & Access Management

✅Confidential Client Transfers – Share proposals, reports, and private records with robust encryption and a clean audit trail for each interaction.

✅On-Platform Messaging – Keep client questions and clarifications attached to the relevant files, cutting out scattershot email threads.

✅Client-Facing Branding – Your clients use a portal that carries your identity, which reinforces trust and keeps the experience consistent end to end.

🟡No Live Co-Authoring – Finalise content in your preferred editor, then send via MX for secure, verifiable delivery.

Collaboration

✅Unlimited File Sizes – Share any amount of data without hitting an upload ceiling. By contrast, Google Drive caps at 750GB per day, and WeTransfer free stops at 2GB.

✅Encrypted, Client-Facing Portals – Receive sensitive information through secure, custom-branded links. Standard consumer tools don’t offer this professional intake option.

❌Not Intended for Archiving – MX is optimised for transfer workflows rather than acting as a long-term storage service like Dropbox or OneDrive.

File Transfer & Storage

How MX Helps Business achieve Compliance

Client file sharing demands extra care, both for confidentiality and for compliance checks. My MX Data provides reliable end-to-end encryption with detailed, audit-ready transfer trails for complete peace of mind.

Client File Sharing Compliance
MX facilitates GDPR-aligned client file sharing with quantum-secure encryption, transparent audit logging, and sovereignty controls that help businesses manage sensitive exchanges responsibly.
ISO 27001
My MX Data assists organisations in maintaining ISO 27001 compliance readiness through encryption, named-user control, and secure audit record storage.
FSQS
On the secure client file sharing page, FSQS registration demonstrates My MX Data’s alignment with regulated sector needs, providing encryption that helps achieve compliance.
Cyber Essentials Plus
Cyber Essentials Plus alignment is ensured via secure access gateways, malware prevention layers, and patented quantum encryption that supports with compliance for regulated industries.
UK Security Council
UK Cyber Security Council-aligned processes include patented quantum encryption, permission-based access, and resilient operational protocols that support with compliance.
Data Protection Act 2018
My MX Data facilitates compliance with the DPA by applying quantum-secure encryption, tightly managed named-user access, and offering fully UK-resident data storage.
AES-256 Encryption
In secure client file sharing, My MX Data uses AES-256 encryption for every handoff, alongside quantum-level safeguards, supporting professional confidentiality and helping demonstrate compliant handling.
SOC 2
In secure client file sharing, My MX Data applies SOC-2 principles with authenticated access, alerting and monitoring, and quantum-secure encryption that helps professional teams meet client confidentiality and compliance needs.
ISO 27018
The service supports ISO 27018 alignment via permission-based access, traceable audit logs, and quantum-secure encryption which facilitates compliance for cloud-stored personal data.
FCA
FCA-aligned data handling is achieved through the platform’s encryption, permissioned file access, and complete audit trails which support with compliance in regulated workflows.
Feature Description
🔒
Quantum-Safe Encryption
Encrypts every client file using ASR with AES-256 strength. It helps protect sensitive exchanges from interception, quietly reinforcing compliance for client confidentiality.
👤
Named Recipient Control
Access is limited strictly to named recipients. You always know who has taken a look - downloads, views, uploads, all logged for transparency.
🛡️
Compliance-Ready Setup
Supports GDPR, ISO 27001, SOC-2, and FCA needs by embedding encryption, traceable access control, and auditable logs into every client file exchange.
📊
Real-Time Activity Logs
Captures activity as it happens - uploads, previews, downloads. Makes it straightforward to review who did what and when, without delay.
📤
No Size Limits
Lets clients send large documents - video, high-res images, project bundles - without worrying about size restrictions.
🔐
Secure Upload Portals
Custom-branded secure portals let clients send documents safely. Each file is encrypted from the moment it’s uploaded until it’s retrieved.
👁️
Access Tracking
Tracks IP, timing and user identity with every access. Easy to see who’s interacting with what, and when - great for client audits and oversight.
🔑
Multi-Factor Authentication
Adds an extra verification layer at login. Protects client accounts even if credentials slip - trusted access, every time.
🚫
No Public File Links
Public sharing links are blocked. Clients only receive access through secure, authenticated pathways, not via vague URLs.

FAQs

1
Confidentiality, Trust & Professional Standards
How does MX give clients confidence their files are safe?

Client-Facing Assurance: Every transfer is encrypted and logged, so businesses can show clients verifiable proof of how their data was handled. Unlike email attachments or generic cloud links, MX makes security visible and measurable.

Why It Matters: Studies show 80% of clients say trust in data handling affects their choice of service provider [PwC]. MX helps demonstrate that trust from the very first exchange.

See more examples in our Case Studies.

Can clients access files without complex logins or software installs?

Frictionless Experience: Clients receive a secure, identity-based invitation — no downloads, no separate apps. This keeps the exchange professional while avoiding the clunky steps that frustrate non-technical users.

Direct Access, Still Secure: Files can only be opened by the named recipient, but the process feels as simple as opening an email attachment — without the risks.

For a breakdown of client usability, review our Features.

What makes MX safer than sending client files by email?

Designed to Replace Email Attachments: Email is not built for sensitive data. Files can be forwarded, intercepted, or stored indefinitely in inboxes. MX eliminates those risks by enforcing expiry dates, download limits, and identity-based access.

Auditability: Each exchange creates a clear trail of when files were delivered and accessed. Email cannot offer this, leaving businesses exposed if disputes arise.

For context, 94% of organisations have experienced phishing or email-based attacks [Proofpoint]. MX provides a safer alternative for client data.

Can MX provide evidence of file delivery if a client disputes receipt?

Yes, Immutable Logs: MX records every transfer event — from the moment a file is sent to the moment it is opened. These records cannot be tampered with and serve as defensible evidence in the event of a dispute.

Practical Benefit: For industries like law, finance, and healthcare, being able to prove that a document was delivered securely can prevent compliance issues or liability claims.

Explore how this works in regulated sectors in our article on secure transfer compliance.

2
Efficiency & Client Experience
How does MX make client onboarding easier?

Simple Start for New Clients: Instead of asking clients to create accounts on multiple platforms, MX provides a direct, secure channel for file exchange from day one. This removes early friction in the client relationship.

Professional Impression: Clients receive files through a system that demonstrates confidentiality from the very first exchange, helping establish trust at the start of the engagement.

See examples of smooth onboarding workflows in our Case Studies.

Can MX help reduce back-and-forth when exchanging sensitive documents?

Yes, Streamlined Workflows: With audit trails and expiry settings, there’s no need to resend updated links or worry about files being lost in inboxes. Clients always have one clear, secure point of access.

Faster Turnarounds: By avoiding failed attachments or blocked transfers, both staff and clients spend less time troubleshooting and more time progressing projects.

Explore more about workflow improvements in our article on collaborating with confidence.

Does MX support repeat exchanges with the same clients?

Yes, Designed for Ongoing Relationships: MX makes it easy to set up recurring secure exchanges, so firms dealing with long-term clients (such as accountants, law firms, or consultants) don’t have to reinvent the process each time.

Consistency Builds Trust: Clients know where and how to access files every time, avoiding the confusion of constantly switching between tools.

For industry-specific examples, see our File Sharing for Accountants page.

What benefits does MX bring compared to client portals?

Lighter & More Flexible: Traditional portals often require logins, training, and setup on both sides. MX provides the same level of security without the heavy infrastructure or steep learning curve.

Less Admin, Same Security: Teams can share files securely without needing IT to manage dedicated portal software, while clients benefit from fast, direct access.

For a broader look at secure exchange options, visit our page on Secure Portals.

3
Support & Assurance
What happens if a client accidentally deletes their secure file link?

Quick Recovery: Administrators can reissue file access instantly, without re-uploading the document. This avoids delays and ensures clients regain access without unnecessary effort from your team.

Controlled Distribution: The reissued link is still tied to the original named recipient, meaning access stays secure even after regeneration.

For details on access management, explore our Features page.

If a client disputes receiving a document, can MX provide evidence?

Yes, Immutable Audit Trails: MX logs record every file transfer event, from upload to delivery and recipient access. These logs can be exported as defensible evidence in regulatory or contractual disputes.

Protecting Both Sides: This transparency helps avoid client-provider misunderstandings and strengthens professional accountability.

Read more in our guide on secure file transfer compliance.

How does MX reassure clients about long-term confidentiality?

Temporary Exchange Model: Files are not stored indefinitely. Once delivered, they are removed from MX’s servers, aligning with best practices on data minimisation and confidentiality.

Compliance Evidence: Clients can be shown that MX operates in line with frameworks such as GDPR and ISO 27001, which demand strict data handling policies.

This gives clients measurable confidence that sensitive material is not left online unnecessarily.

What support is available if clients face issues accessing files?

Direct Help When Needed: MX provides businesses with access to responsive support teams who can guide both staff and clients through technical issues quickly.

Self-Service Resources: Guides and FAQs are also available, so clients can resolve common questions without needing constant intervention from your team.

For assistance options, see our Contact Us page.

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  • Client Handoff Security
    Send or receive sensitive client documents with full control over access expiry, recipient identity, and data tracking.
  • Sensitive Client Data
    Transfer client files securely using audit logs, temporary links and user-based access controls that protect privacy at every step.
  • Audit-Friendly Sharing
    Each file shared with a client is timestamped, logged, and accessible to admins for dispute resolution or regulatory review.
  • Client-Specific Access
    Every client must be a named user to open shared files, helping maintain confidentiality and trust throughout the client lifecycle.
  • Share Client Batches
    Send full client folders or archives at once, without worrying about file size caps or breaking uploads into smaller pieces.
  • Client Delivery Speed
    Clients receive files instantly once sent, thanks to low-latency encrypted delivery and no platform throttling.
  • Client File Comments
    Send instructions, checklists, or context along with client files so they receive everything they need in one secure handoff.
  • Client Branding
    Style the client handoff process with your business visuals so each exchange is branded and secure.
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