Frequently asked questions

Signkoi is an online e-signature service. You upload a PDF, place fields such as signature, name and date, and send it to the people who need to sign. They open a secure link and sign in their browser on any phone, tablet or computer — there’s nothing to install — and you get back a sealed PDF together with an audit trail and a certificate of completion. See how it works.

Only to send documents. Creating an account is free and doesn’t need a credit card. The people you send documents to don’t need an account, an app or a password — they sign from the link they receive.

PDF files, up to 25MB. Signkoi checks the file’s contents, not just its name, so it has to be a real PDF. You can also add several PDFs (up to 10, within the same size limit in total) and they’re combined into one document in the order you choose. If your document is in Word or another format, export or print it to PDF first.

12 languages: English, Spanish, French, German, Portuguese, Italian, Dutch, Polish, Russian, Japanese, Chinese and Hindi. Choose the language of the app and of the emails you receive in Settings. You can also pick a language for each recipient: their invitation and signing page appear in it, and they can switch at any time.

Upload a PDF, add your recipients, drag fields onto the pages and assign each one to a recipient. Then check the email subject and message, and send. Signkoi emails each recipient their own private signing link. Our step-by-step walkthrough shows what happens on both sides.

You can add up to 20 recipients to a document. Turn on signing order to decide who goes first: lower numbers go first, and people with the same number receive it at the same time. Leave it off and everyone receives it at once.

A signer fills in their fields and signs. An in-person signer signs on your own device: when it’s their turn, choose “Sign in person now” on the document page and hand them your phone, tablet or computer. An approver reviews and approves without fields, a viewer opens the document and marks it as viewed, and a copy recipient receives the finished document.

There are 15 field types: signature, initials, name, email, company, title, date signed, text, number, checkbox, radio buttons, dropdown, attachment, calculated (formula) and note. Name, email and date signed fill in automatically. Move and resize each field until it sits exactly where it belongs.

Yes. Once a document is sent, you can copy a recipient’s signing link from the document page and share it however you like — a chat app, a text message or your own email. For a quick signature from one person, you can also create a single signing link without entering an email address at all. Share a link only with the person it’s meant for: anyone who has it can open the document unless you’ve added an identity check.

Yes. When you send, turn on reminders and choose when the first one goes out and how often it repeats, from 1 to 60 days. Reminders go only to people who haven’t finished yet, and you can also send a reminder or resend an invitation by hand from the document page. To set a deadline, choose whether links stay open until everyone finishes or expire after 1, 3, 7 or 30 days. An expired document stops accepting signatures and moves to Expired on your dashboard.

You can correct a recipient’s name, email address or identity check without starting over. If you change the email address, the old link stops working and a new one goes to the new address. The fields and the list of recipients can’t change once a document is sent. If something bigger needs to change, void the document: everyone’s link stops working and anyone whose turn it is gets an email with the reason you give. Voiding can’t be undone.

Yes — save it as a template. A template keeps the PDF, the roles (such as “Client” or “Manager”) and their fields. Each time you use it, you fill in who takes each role and send. You can upload a PDF straight in as a template or save a document you’ve already prepared as one. Templates don’t count toward your monthly document allowance; the documents you send from them do.

Yes, with bulk send. Pick a template and upload a CSV file with a name and an email column for each role. Every row becomes its own envelope with the template’s fields and signing order — up to 500 rows per bulk send. Each envelope counts toward your monthly document allowance.

A PowerForm turns a template into a public link you can put on your website or in an email. Whoever opens it enters their name and email, then signs their own fresh copy, so you don’t have to send each one. You can limit how many times the link can be used and switch it off at any time. Each submission counts toward your monthly document allowance.

Your dashboard shows each document’s status — waiting for others, completed, declined, voided or expired. On the document page you can see where each recipient is, and the audit trail records when the document was sent, opened and signed, with timestamps and IP addresses. Signkoi also emails you as people sign and when the document is complete.

No. Open the link on any phone, tablet or computer and sign in your browser. There’s nothing to install, no account to create and no password to remember, and signing costs you nothing.

Open the link, agree to use electronic records and signatures, and read the document. Press Start and you’re taken to each field you need to complete. Adopt your signature once — draw it with a finger, stylus or mouse, type your name and pick a handwriting style, or upload a photo of your signature — then tap each signature box to place it and press Finish. Our guide to signing a PDF online has more tips.

The sender added an identity check to protect the document. If it asks for an access code, the sender will have given it to you separately — it’s never in the email, so ask them if you don’t have it. If it’s an email code, Signkoi sends a 6-digit code to your email address. The code only works for a few minutes, and you can ask for a new one. Not there? Check your spam folder.

Open Other actions on the signing page. Choose Decline to sign and give a reason: the sender and everyone else on the document are told, and it can no longer be completed. If someone else should handle it, choose Assign to someone else and enter their name and email. Signkoi sends the document to them and your link stops working. Signers and approvers can do this as long as they haven’t filled in any fields yet.

When everyone has finished, Signkoi emails you the completed document with a link to download it, and attaches the signed PDF when it’s small enough. You can also download the completed copy from your signing link.

The signing page tells you why. “Expired” means the deadline the sender set has passed, “cancelled” means the sender voided the document, and “not your turn yet” means someone earlier in the signing order still has to act — you’ll get an email when it’s your turn. Only the sender can send the document again or fix it, so contact them directly.

Your name and email address, how you signed (drawn, typed or uploaded), the time of each step — such as opening the document, agreeing to sign electronically and signing — and the IP address and browser you used. This goes into the document’s audit trail and certificate of completion, which help show who signed and when.

If you only signed documents that someone sent you, you don’t have a Signkoi account, so there’s no account to delete. The document and its audit trail belong to the sender, so please contact them first; we’ll help them answer your request. For your other rights, see our Privacy Policy.

Every link is built from 32 bytes of cryptographically secure randomness, so it can’t be guessed. Links are matched by their SHA-256 hash, and the readable link is kept only in encrypted form. A link opens one document and nothing else. Senders can also set an expiry, replace or revoke links, and ask recipients for an access code or an email code. The details are on our security page.

When a document is completed, Signkoi seals the signed PDF and its certificate of completion with a digital signature and gets a trusted timestamp from an independent timestamp authority. Any later change breaks the seal, and PDF readers that support digital signatures, such as Adobe Acrobat, flag it in their signature panel. You can also check the file on our verification page.

Drop a completed PDF or certificate of completion on the verify page. Signkoi calculates the file’s SHA-256 fingerprint and compares it with the documents it has sealed: a match means the file is byte-for-byte what Signkoi sealed. Your file isn’t stored, the result shows no names or email addresses, and you don’t need an account. A match doesn’t prove who the signers are or that the document is legally valid for your purpose.

The audit trail records key events — such as sent, opened, identity checks, agreement to sign electronically, signed, declined, reminders, voided and completed — each with a timestamp, IP address and browser user agent. The certificate of completion summarises it in a PDF you can download and keep with the signed document. Audit entries are written by the server, and the app has no way to edit them.

Only you, as the document’s owner, can view, edit, send, download or delete it, and the server checks this on every request. Recipients can open only the document they were sent, through their own link, and never get access to your account or your other documents. If you share a template with your team, team members can use that template; your documents stay yours.

Everything travels over HTTPS, and browsers are told never to fall back to plain HTTP. Files are kept in private storage, passwords are hashed with bcrypt, and signing links are stored as hashes. Our security page lists exactly what we do, and we don’t make claims beyond it, for example about encryption at rest. If your organisation needs a particular control, ask us and we’ll give you a direct answer.

In most countries, yes — laws such as ESIGN and UETA in the United States and eIDAS in the European Union recognise electronic signatures for most everyday agreements, though some document types are excluded and the rules differ by country. Our country-by-country guide explains the main law where you are. This is general information, not legal advice.

A simple electronic signature (SES): a drawn, typed or uploaded signature given through a secure link, together with the signer’s agreement to sign electronically and an audit trail. Signkoi doesn’t offer advanced (AdES) or qualified (QES) signatures based on a personal certificate. The digital seal on the finished PDF shows that the file hasn’t changed; it isn’t a certificate-based signature by the signer. Read more in electronic signature vs digital signature.

Almost every country carves out some documents. Common examples are wills, some real-estate deeds and transfers, documents that must be notarised or witnessed in person, court filings, family-law matters, many powers of attorney and certain negotiable instruments. The list varies, so check the rules where you are and get legal advice for important or regulated documents.

Every completed document comes with records that help show intent, consent and who signed: each signer’s deliberate signing action and agreement to sign electronically, a sealed PDF, a timestamped audit trail and a certificate of completion, which anyone can check on our verification page. Whether a signature holds up depends on the facts and on the law that applies, and using Signkoi doesn’t guarantee that a particular signature will be valid or enforceable.

Every account starts on the Free plan, which includes a monthly allowance of documents and doesn’t need a credit card. Pro removes the monthly limit and is billed monthly or yearly. For teams there’s a Business plan: contact us about it. Current prices and what each plan includes are on our pricing page.

Each document you create counts once, whether you upload it, start it from a template, or it’s created by a bulk send, a PowerForm submission or the API. Combining several PDFs into one document counts once, templates don’t count, and deleting a document doesn’t give the allowance back. Your recipients never pay and never count. The allowance resets at the start of each calendar month (UTC).

Payments are processed by Paddle, our online reseller and merchant of record, so Signkoi never sees your card details. Checkout shows the price in your local currency where available, and Paddle adds VAT, GST or sales tax where your country requires it and issues your invoices. Your invoices, payment method and billing details are in the Paddle customer portal, which you open from Plan & billing.

Yes. Pro has no long-term contract. Cancel from Plan & billing and you keep Pro until the end of the period you’ve paid for, then your account moves to the Free plan and your documents stay where they are. Changed your mind before then? Choose Keep my subscription.

Yes. In Settings, go to Your data and choose Request export. We email you when it’s ready: a ZIP file with your account details, documents with their recipients, fields and audit trails, templates and contacts as JSON files, plus your original and signed PDFs. The download is available for 24 hours.

Open Settings, go to the Danger zone, choose Delete account and confirm. Deletion is immediate and permanent: your documents, signed PDFs, audit trails, templates and contacts are removed, and signing links you sent stop working. If you pay for Pro, deleting your account cancels the subscription immediately, so you won’t be charged again. Download anything you want to keep first. Read everything about deleting your account.

Your documents, their audit trails and signed copies are kept until you delete them or your account. Deleting a document removes the original file, the signed PDF and its audit trail for good — there’s no recycle bin — so download any signed PDF you want to keep first. Our Privacy Policy has the details.

We use it to run the service and to keep the audit trail that shows who signed what and when. We don’t sell personal data or use it for advertising, and we share it only with service providers that help us run Signkoi, such as hosting, email delivery and Paddle for payments. Our Privacy Policy explains your rights, and our Data Processing Agreement covers the data we process on behalf of customers.

Yes. Create a team and invite colleagues by email; invitations work for 7 days and only for the address you enter. Owners and admins manage members and branding, and every member can use shared templates and send with the team’s branding, which puts your logo and colour on signing pages and emails. Each person’s own documents stay with them.

Yes. The REST API lets your own software create and send envelopes, use templates, download signed PDFs and audit trails, and receive webhooks. Create API keys in the app’s developer settings and give each key only the scopes it needs. Requests are rate-limited per key, depending on your plan, and envelopes created through the API count toward your monthly document allowance. Start with the developer docs or the quickstart.

Add an HTTPS endpoint and choose the events you care about. Signkoi sends a JSON POST each time one happens, signed with an HMAC-SHA256 signature you can check with your endpoint’s secret, and retries failed deliveries automatically. The webhooks guide includes verification code you can copy.

Yes, with embedded signing. When it’s a recipient’s turn, your server asks Signkoi for a signing URL and opens it for that person; they sign on the Signkoi signing page, and a webhook or a status check tells you when they’ve finished. Only create a signing URL for someone you’ve signed in as that recipient. See the embedded signing guide.