Email OTP verification

Only the right person gets to sign.

Switch on email OTP verification when you add recipients. Before your signer can open the document, they enter a 6-digit code sent to their email. A forwarded or shared link is not enough.

Try it free See how it works
  • Free on every account, no extra credit
  • Signers need no account
  • Works on every signing link
app.signwith.co/s/...
SignWith verification screen asking the signer to enter the 6-digit code sent to their email, with Verify and Resend code
How it works

Three steps to a verified signer

  1. Add New Recipients window with the Require email verification (OTP) switch between Send Email and Preserve order
    1

    You switch it on

    In the Add New Recipients window, switch on Require email verification (OTP), then click SEND.

  2. Verification screen with the document name, the masked email address and a Send verification code button
    2

    Your signer asks for a code

    When they open the link, they see Verify your email to access this document and click SEND VERIFICATION CODE.

  3. Verification screen with a 6-digit code entered, a Verify button and a Resend code link
    3

    They enter it and sign

    They type the 6-digit code from their email and click VERIFY. The document opens and they sign as usual.

Why it matters

What OTP verification gives you

  • A shared link is not enough

    The code goes to the signer’s inbox, so whoever holds the link also needs that inbox.

  • Works on every link

    Sent by email, or copied with SHARE LINK to WhatsApp, Slack or text: the code check applies to all of them.

  • No extra cost

    It is included on every account. Verification uses no extra credit.

  • No account for signers

    Your signer only needs their email. No sign-up, no app, no password.

  • Resend in one click

    If the code does not arrive, your signer clicks Resend code on the same screen.

  • One switch per send

    Turn it on for the documents that matter and leave it off for quick ones.

When to use it

Switch it on for the documents that matter

  • Money on the line

    Loans, payment plans and service contracts.

  • HR paperwork

    Offer letters and policies the candidate must sign themselves.

  • Shared inboxes

    When an assistant or a team inbox could open the email first.

  • Links sent in chat

    When you share the link on WhatsApp or Slack instead of email.

Records and proof

Part of the record behind every signature

  • Signers verify their identity with a one-time passcode sent to their email.
  • SignWith's email OTP verification, consent record, signing record and audit trail are designed to support the requirements of the ESIGN Act and UETA.
  • Every completed document comes with a Certificate of Completion that records timestamps, IP addresses, device and browser details and email events, sealed with a SHA-256 hash.
What the Certificate of Completion shows
app.signwith.co/file/audit-log.pdf
Certificate of Completion with the signer email, completion time, IP address, browser, signature and initials
FAQ

Frequently asked questions

What is email OTP verification?

A check before signing. SignWith sends a 6-digit one-time code to the signer’s email, and they must enter it before the document opens.

Where do I turn it on?

In the Add New Recipients window, after you enter your signers’ emails. Switch on Require email verification (OTP) and click SEND.

Does it cost extra?

No. It is included on every account and uses no extra credit. A credit is used only when the document is signed, as usual.

Does my signer need a SignWith account?

No. Your signer only needs access to the email address you entered. See Do signers need a SignWith account?

Does it work if I share the link on WhatsApp or Slack?

Yes. The code check runs whenever someone opens the signing link, however it reached them. See Can I send the signing link without email?

My signer did not get the code. What now?

Ask them to check spam or promotions, then click Resend code on the verification screen. If the email address was wrong, send the document again to the right one.

Step-by-step in the Help Center

Send your next document with OTP switched on.

3 free documents every month. After that you buy credits, and a credit is used only when a document is signed.

Start free See pricing

E-signature rules vary by country, state and document type, so check with a legal professional that an e-signature suits your specific agreement before you rely on it.