Security at the core
End-to-end encryption and user identity authentication let you transfer files securely. Optional protections help you prevent unauthorized tampering with content.
User identity authentication
Upload files to C2 Transfer, enter your recipient's email address or phone number, and share a transfer link.

Content protection
Protect uploaded content with links that expire, download limits, and watermarks.

Keep files moving in the right direction
Share with anyone
C2 Transfer works for anyone who shares a great number of files. Up to 100 transfers can be active at the same time and each transfer can contain 20 GB worth of files.
Straightforward file collection
Request and receive files from anyone by sending them a simple and secure link. All files are encrypted and recipients are asked to verify their identity before uploading files.
Speedy user management
Businesses can quickly manage C2 Transfer licenses through a simple interface, simplifying user access.

Safe transfers made simple
Secure file sharing doesn't need to be complicated. Simple steps ensure each file you send with C2 Transfer is delivered to the right person.
Step 1
Upload files to C2 Transfer, enter the email addresses or phone numbers of your recipients, and share transfer links.
Step 2
Only recipients with access to an authorized email address or phone number can receive a unique one-time password (OTP) after opening the link.
Step 3
Recipients enter the OTP and download the files. Download limits and watermarks are applied if set in Step 1.



Customer stories
See how these organizations achieved more with Synology.

"With C2 Identity, not only can we manage employee accounts more centrally but also set up their devices more easily in less time."
Tong, Office Manager, SAT Knowledge

"C2 Transfer’s end-to-end encryption helps our organization upload confidential files to external servers more securely. In addition, one-time password protection through email or phone further reduces our worries about data leaks."
KL, Product Manager, Ganzin Technology Inc.
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Secure your file transfers today
Monthly and yearly subscriptions are available with data residency in Europe, North America, or APAC. Prices shown below do not include VAT.
Frequently asked questions
Can transfer recipients download files without a Synology Account?
Yes. C2 Transfer does not require recipients of file transfers to have a Synology Account. After a recipient successfully verifies their identity, they will be able to download the files.
How are my transfers secured?
C2 Transfer adopts end-to-end encryption and recipient authorization to secure your transferred documents. Your transfer tasks are protected against unapproved access attempts. Your data is also made incomprehensible to anyone accessing C2 servers, giving account owners full control and privacy when sharing files. For more information, please refer to the C2 Transfer Security White Paper.
Can I try the service before purchasing a plan?
Yes. A 30-day free trial is available for both plans.
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