No. WeTransfer says plainly that it does not use the content you send to train AI models, and that it does not sell it. Its own content-protection page says "We don't use it to train AI models", checked 1 October 2026. The worry began with a terms-of-service update in July 2025. WeTransfer responded by rewriting the clause and removing the wording that caused the alarm. If that was your reason for leaving, it no longer holds on its own.
What follows covers what happened, what WeTransfer's current pages commit to, and the questions worth asking any file transfer service, because the 2025 episode shows they are easy to miss.
What happened in July 2025
WeTransfer published updated terms of service, and one passage caught people's attention. It granted a licence to use content "to improve performance of the Service", with a reference to "machine learning models that enhance our content moderation process". Read quickly, that looked like a company reserving the right to feed customers' files to an AI.
In its clarification, WeTransfer wrote: "We don't use machine learning or any form of AI to process content shared via WeTransfer." It also said it had "removed the mention of machine learning, as it's not something WeTransfer uses in connection with customer content and may have caused some apprehension."
The same post lists the commitments directly:
- "YES—our terms are compliant with applicable privacy laws, including the GDPR"
- "NO—we are not using your content to train AI models"
- "NO—we do not sell your content to third parties"
No
So is there anything left to worry about?
On AI training, no. WeTransfer has said so in writing, which is about as strong as a commitment from a service provider gets.
The episode is still useful, because it showed how few people read what their transfer service is allowed to do with their files. The licence clause in a service's terms decides that, and most people only look at it when a headline makes them.
Three questions to ask any transfer service
Ask these of any service you send client work through:
- What licence do the terms grant over your content, and for what purpose? A service needs some licence to store and deliver a file. The question is whether the purpose stops there.
- Who else processes the file? Sub-processors, ad partners on the download page, analytics. Each one is another party with access to something.
- How long does it stay, and who decides? On WeTransfer's free plan a transfer expires after three days. That keeps a file from lingering, but it also deletes things you meant to keep.
Where Yungle stands
I run Yungle, so weigh this accordingly. The same answers for us:
- Licence: only what is needed to store, scan, preview and deliver your files. Files are never used to train AI models and never sold.
- Who processes them: our own servers in Germany. Every file is always encrypted with its own key, and the download page carries no ads.
- How long: free transfers last 7 days; on a paid plan nothing expires unless you set a date.
If WeTransfer works for you, its answer on AI is a good one, and it is not a reason to switch. If you are switching anyway, the alternatives worth considering are compared honestly, including where the others beat us, and Yungle vs WeTransfer puts the two side by side.