Custom managed file transfer software development
Appfront builds custom software for secure, verifiable file exchange with supply chain partners: transfers that resume themselves after an interruption, check that a file has arrived complete, record who sent what and when, and alert you when a delivery fails to arrive. For organisations that currently rely on loose SFTP folders, shared drives and email attachments, and cannot prove that a file has actually been received.
What is managed file transfer software?
Managed file transfer software automates and secures the exchange of files between organisations. Think of daily order files sent to a logistics provider, claims files submitted to an insurer, measurement data from production, or exports to an accountant. The word "managed" is what sets it apart from a bare SFTP folder: the transfer is monitored, resumes automatically, checks for completeness and records what happened.
In many organisations this exchange has grown up organically: a script here, a shared folder there, an email attachment when it needs to be quick. That works until something goes wrong: a file arrives only partially, a delivery fails to show up and nobody notices, or a dispute arises with a supply chain partner over whether something was sent at all. At that point it becomes clear there is no conclusive trail, and nobody can demonstrate what actually happened.
This page is about exchanging files. If you are looking for integrations where systems exchange data directly via an API, see data integration. If the data needs to stay within your own environment, on-premise data integration is more suitable. Our broader approach is described under custom software development.
Provably received
For each transfer, we record what was sent, when, by whom, and whether the recipient received it complete.
Self-recovering
If a connection drops, the transfer resumes from the point where it stopped. There is no need to send it again manually.
Visible when something goes wrong
If an expected delivery does not arrive or a transfer repeatedly fails, the administrator receives an alert.
How we build your managed file transfer software
We start with the flows you actually have: which files go where, how often, how large they are, and what happens when something goes wrong. Your administrators and the people who currently intervene manually sit at the table from the discovery phase onwards, because they know where things break down in practice.
We map out the file flows that exist, with which partners, over which protocols and at which times. We also record what makes a delivery mandatory and what must happen if it fails to arrive.
We design the transfer logic, the access model per partner and the audit trail. In doing so we determine encryption in transit and at rest, retention periods, and who may view or resend which files.
We build in short iterations and test with real file sizes and deliberately disrupted connections. A transfer that only works when everything goes right is not managed file transfer.
Controlled go-live, with the new route running alongside the existing one first, followed by management, monitoring and expansion when a new partner joins.
What managed file transfer software concretely does
What you need depends on the number of partners and how critical the flows are. Below is what we most often deliver.
Secure transfer
Encrypted transport using the protocols your partners support, with encrypted storage for as long as a file is held with you.
Resume and retry
An interrupted transfer continues from where it stopped, with a growing number of retry attempts before an alert is raised.
Completeness check
Verification that a file has arrived complete and unaltered, so that a partially received file is never silently processed.
Audit trail
Each transfer is logged: what was sent, when, by whom and with what outcome. Useful in a dispute with a partner and during an audit.
Alerts
Alerts fire on a failed transfer, but also when an expected delivery doesn't arrive. The latter is in practice the hardest to notice.
Partners and permissions
For each partner, define which folders and file types are permitted, with keys and access that you can revoke yourself as soon as a collaboration ends.
For whom we build managed file transfer software
Where file exchange is business-critical, the requirements differ by sector. For each of them, we build software that fits the demands that apply there.
Logistics and transport
Where order, shipment and status files travel back and forth daily between shippers, carriers and customs, and a missed delivery immediately affects operations.
Healthcare and insurers
Where claims and patient-related files are exchanged, and traceability and encryption are non-negotiable.
Industry and manufacturing
Where measurement, machine and quality data move from sites to central systems, often in large files and sometimes over less reliable connections.
Financial services
Where batch files with payments or reports must arrive at fixed times, and it must be demonstrably provable afterwards that this happened.
Test your idea first: a working prototype in 1 day
With OneDayBuild, we turn your idea into something tangible in one day for €1,150, so you can see whether further development is worth the investment. Decide to go ahead with the full build? Then we credit the full cost.
Explore OneDayBuild →Technology and protocols
We build with a modern, maintainable stack and connect to the protocols your partners support. In practice that means mainly SFTP and FTPS, sometimes AS2 for formal exchange with fixed trading partners, and increasingly a secure HTTPS route for parties who don't want to run their own server. Which protocols are needed is determined by your partners, not by us; during the discovery phase we inventory this before anything is built.
Why choose Appfront for your managed file transfer software?
We build custom software with an in-house team, without vendor lock-in. You remain the owner of your software and keep your file flows in your own hands.
Our own team
Design and build happen in-house. You speak with the people who actually make your software.
No vendor lock-in
The code and the data are yours. Your file flows are not tied to a licence per connection or per volume.
Proven against disruption
We test with interrupted connections and incomplete files, because that is exactly where file transfers in practice tend to break down.
Growing with you
A new partner, a different protocol or stricter retention requirements: the software adapts with you.
Security and privacy in managed file transfer software
File exchange almost always involves data that must not end up in the wrong hands, and often personal data. The risk rarely lies in the transport itself, which encryption handles well. It lies in what happens around it: files that remain stored for months, keys that aren't revoked when a collaboration ends, and administrators who can access everything without that being recorded.
We therefore set up encryption both in transit and at rest, with key management per partner and access that you can revoke yourself. Retention periods are part of the design: a file is automatically deleted once it has been processed and the agreed period has expired. Access to the content of files is limited to those who genuinely need it, and every access is logged. For personal data, we record the legal basis per flow, so you can justify why an exchange takes place. Data is stored in the Netherlands or elsewhere in the EU.
Frequently asked questions about managed file transfer software
Answers to the questions we are asked most often about custom managed file transfer.
Managed file transfer software automates and secures the exchange of files between organisations, with monitoring built around it. The difference from a bare SFTP folder lies in what happens when something goes wrong: the transfer resumes itself after an interruption, checks that the file has arrived complete, records what happened, and raises an alert when an expected delivery fails to arrive. That makes the exchange demonstrable rather than hopeful.
With an API integration, systems talk to each other directly, usually record by record and in real time. File exchange involves a collection of data in a single file, often at fixed moments and in large volumes. Many supply chains still work with files because their partners have set it up that way, or because the volume of data suits it better. Both forms exist side by side; which is suitable depends mainly on what your partner supports.
In practice, mainly SFTP and FTPS, sometimes AS2 for formal exchange with fixed trading partners, and a secure HTTPS route for parties who would rather not run their own server. Which protocols are needed is determined by your partners; we establish this during the discovery phase and build what fits. We advise against unencrypted FTP, even if a partner still uses it.
This is the trickiest case, because nothing happens that you could react to. We therefore record, for each flow, when a delivery is expected. If it fails to arrive, a notification goes to the administrator after the agreed deadline, stating which partner and which flow is concerned. Without that expectation, no system can tell the difference between a quiet day and a broken connection.
You determine this for each flow, and it becomes part of the design. For most flows, a file is deleted once it has been processed and an agreed period has passed, so that no archive builds up that nobody looks at any more. The audit trail is kept for longer than the files themselves: it records that a transfer took place, without the content still being present.
We build bespoke solutions. The number of partners, the protocols they support, the moments when deliveries are expected, and the requirements for retention and traceability differ from one organisation to another. After an intake meeting, we jointly determine which flows are most critical and in what order we build them.
Ready to have your file exchange built?
Tell us which files you exchange with which partners and where things currently go wrong. In an advisory conversation, we will look together at what bespoke work would deliver and where it would be best to start.