Send Large Files, Simply and Without Losing Control
Email is still the first choice for sharing documents. The problem is that most email providers still limit attachments to 20–25 MB - a frustrating restriction as soon as you need to send a large file.
Your large files, sent in three steps.
Choose the file
Drop your file or folder on the home page.
Choose the protection
Automatic browser encryption, or optional private encryption.
Share the link
Copy it, or let OWL Transfer email it to your recipient.
Send large files without losing control.
Videos, archives, high-resolution photos: send large files, encrypted in your browser before they leave.
Every size
Up to 500 GB over 30 days depending on your plan, and more with a custom plan.
Browser encryption
Automatic: your files are encrypted in your browser before sending.
Private encryption, optional
For your most sensitive transfers: the file only opens with your recipient's private key, or the decryption code you give them.
OneTimeView
For a document to show only once, in protected viewing.
Nothing to install
Everything happens in the browser.
You send. You control.
As a result, users often have to compress files, split them into multiple parts, or rely on third-party file transfer services with varying file size limits, unpredictable retention periods, and security levels that aren't always suitable for sensitive information.
This limitation has become even more apparent as files continue to grow in size. Whether you're sharing business documents, personal files, or large media, today's workflows have evolved - but email attachment limits have remained virtually unchanged.
OWL Transfer was built to solve this problem. As part of our platform launch, our free plan currently allows you to send files up to 300 MB, with no account required and no complicated setup. This limit will gradually increase as the platform continues to evolve.
For users with larger requirements, the Premium plan supports file and folder transfers of up to 150 GB, while the Premium Plus plan increases that limit to 500 GB, with features designed for frequent users and businesses.
Large file transfers shouldn't come at the expense of privacy. That's why OWL Transfer includes private end-to-end encryption, ensuring that only authorized recipients can decrypt, access, and download your files. For PDFs and videos, our OneTimeView technology allows content to be viewed directly in the browser while preventing, in most environments, downloads, screenshots, and screen recordings. For even greater protection, a visible watermark can be applied directly to PDF documents and videos.
Our ambition is to allow everyone to send files, regardless of their size, volume, or frequency. Whether you're an individual, a small business, or a large enterprise, OWL Transfer is designed to scale with your needs through flexible plans and custom solutions. Because beyond file size, we believe it's just as important that you remain in control of who can access, view, and protect your files.
Frequently Asked Questions
What is the maximum file size that can be sent by email?
Most email providers limit attachments to 20–25 MB, depending on the service.
How can I send a file that is several gigabytes in size?
Once a file exceeds your email provider's attachment limit, the best solution is to use a dedicated large file transfer service such as OWL Transfer.
Can I send large files for free?
Yes. OWL Transfer currently allows you to send files up to 300 MB for free, without creating an account. This limit will increase as the platform continues to grow.
What is the most secure way to send a downloadable large file?
For sensitive documents, we recommend using zero-knowledge end-to-end encryption. OWL Transfer ensures that only authorized recipients can decrypt and access your files, providing maximum confidentiality throughout the transfer process.