WeTransfer Sign works with any PDF, so it suits the full range of documents that come up in engineering work: subcontractor agreements, scope-of-work approvals, site access authorizations, inspection sign-offs, procurement contracts, and design review sign-offs. If you can save it as a PDF, you can upload it to Sign and request signatures from whoever needs to review and approve it.

No account is required on the recipient's side. Each signer receives a personal link by email, clicks through, confirms their identity with a one-time verification code, and signs directly in their browser. This makes it practical for contractors, inspectors, or external vendors who may not use WeTransfer themselves.

Yes. When you set up a document in WeTransfer Sign, you assign signature fields to each individual recipient and send each one a direct signing link. This covers multi-party situations common in engineering — such as a contract that requires sign-off from a project manager, a client representative, and a lead engineer before work can begin.

WeTransfer Sign produces a Simple Electronic Signature (SES) under EU eIDAS and qualifies as an electronic signature under the U.S. Federal E-Sign Act. SES is legally recognized across many jurisdictions and is appropriate for most commercial and professional agreements, including typical engineering contracts. For documents requiring an Advanced or Qualified Electronic Signature, or where specific regulatory standards apply, you should confirm the requirements with your legal team.

Yes, and the two tools work independently. WeTransfer supports CAD files, PDFs, ZIP archives, and most other file types without any compression or quality loss, so originals arrive exactly as sent. WeTransfer Sign handles the signature workflow separately, and signature transfers do not count against your regular WeTransfer transfer activity.