SignThis for Gmail
Send a PDF attachment from Gmail for e-signature
With the SignThis add-on in Gmail's side panel, pick a PDF attached to an email and turn it into a signature request. Signers need no account, and everyone gets a sealed copy with an audit certificate.
The SignThis listing in the Google Workspace Marketplace is awaiting Google's review. Until it is published, upload your PDF at SignThis instead.
How to get a PDF attachment signed
- 1. Open the emailOpen the email with the PDF attached and click SignThis in Gmail's side panel.
- 2. Find the PDFPress Find PDF attachments, then Send for signature next to the one you want.
- 3. Add signers and fieldsSignThis opens the PDF as a draft. Type each signer's name and email, and mark where they sign.
- 4. SendEach signer gets a link, signs in their browser, and everyone receives the sealed PDF.
What SignThis can see in your Gmail
Nothing when you only open an email. SignThis reads an email only after you press its button on that email.
It then reads that one email to list its PDF attachments, and copies the one you choose into a draft.
It does not read your other email, send email from your Gmail account, or keep the email itself.
Google's access tokens are used for that request and are not stored.
The Privacy Policy describes this in full. See also SignThis for Google Drive.
Common questions
How much does it cost?
The integration itself is free. You can send up to 5 documents during your first 40 days with no payment card; after that, plans start at $5 a month, billed monthly. See every plan and its limits.
Do I need a SignThis account?
Yes, signed in with the same Google account you use in Gmail. The add-on puts the PDF into that account's drafts.
How large can the attachment be?
Up to 5 MB and 60 pages, so the signed copy can be emailed to everyone.
Does the request come from my Gmail address?
No. Signing invitations are sent by SignThis and name you as the sender. Replies and the signed copy come back to your email address.
Do the people I send to need an account?
No. Each signer gets a personal email link and signs in their browser, on a phone or a computer.