STINGER SINET

They sign on their phone. You keep the PDF. No per-document fee, no per-seat fee, included with every tier.

SINET is the e-signature service you would otherwise pay per document for, except the signed PDF, its certificate, and the before-and-after live on the job record. The signed PDF, its certificate, and the before and after fingerprints all land on your own disk. No account for the signer to create. No per-signature fee, and not charged per seat the way DocuSign is. Included with every Command Center tier.

See it in action

Build a document to sign, choose the signing order, and drop signature, initials, date, and text fields where they belong. Review field placement before sending, so the sender can see where each signer is expected to act.
Build a document to sign, choose the signing order, and drop signature, initials, date, and text fields where they belong. Review field placement before sending, so the sender can see where each signer is expected to act.
See every document in one list with its signing order, each signer's status, and a full history line. Check the list after sending to see which documents are still waiting for a signer.
See every document in one list with its signing order, each signer's status, and a full history line. Check the list after sending to see which documents are still waiting for a signer.
A library of the real forms your trade uses, like change orders and applications for payment, ready to fill in. Choose the form before preparing a signing packet, keeping the trade document as the starting point.
A library of the real forms your trade uses, like change orders and applications for payment, ready to fill in. Choose the form before preparing a signing packet, keeping the trade document as the starting point.
A plain history where every send, view, sign, and void carries a real name and a time. Review the audit trail after an action to see who handled the document and when.
A plain history where every send, view, sign, and void carries a real name and a time. Review the audit trail after an action to see who handled the document and when.
See what's queued, out, and done, and ask Annabelle to draft the next one. Review the queue before preparing the next packet, separating pending signatures from completed work.
See what's queued, out, and done, and ask Annabelle to draft the next one. Review the queue before preparing the next packet, separating pending signatures from completed work.

A closer look

Place the fields on a document before it goes out to sign. Review field placement before sending, so the sender can see where each signer is expected to act.
Place the fields on a document before it goes out to sign. Review field placement before sending, so the sender can see where each signer is expected to act.
The signer's view, filling in the document field by field. This is the signing step after delivery, showing the fields the recipient completes.
The signer's view, filling in the document field by field. This is the signing step after delivery, showing the fields the recipient completes.

New in this release

Three features that shipped, each with the screen that proves it.

Evidence certificate

Every completed signing set carries a tamper-evident receipt of who signed what and when, with the record's SHA-256 hash printed on the certificate.

Bulk send

Send the same document to many signers at once, and each person gets their own signing set.

Reminders

Send an automatic follow-up nudge to any signer who has not signed yet.

A completed signing set exposes its signing receipt and certificate PDF, with the record hash on the audit line. After signing is complete, open the receipt to review the document evidence and its recorded identifier.
A completed signing set exposes its signing receipt and certificate PDF, with the record hash on the audit line. After signing is complete, open the receipt to review the document evidence and its recorded identifier.
Pick one template, paste your list of names and emails, and create a signing set for each person. Review the recipient list before sending, so each signing set starts with its intended person.
Pick one template, paste your list of names and emails, and create a signing set for each person. Review the recipient list before sending, so each signing set starts with its intended person.
A per-signer Remind control on an open signing set, for anyone who has not signed or declined. After the initial send, review the outstanding signer before choosing whether to send a reminder.
A per-signer Remind control on an open signing set, for anyone who has not signed or declined. After the initial send, review the outstanding signer before choosing whether to send a reminder.

How it actually works

Three steps, and the middle one happens on their phone.

You send the document to sign

Point it at a PDF, name the signer, give it a subject. The document to sign is registered before anything is emailed, and it gets a link with a long random token, not a guessable document number.

They open a plain black-on-white page

The document renders inline. They tick one consent box, then type their name or draw it. No app, no password, no account to create. The Sign button stays disabled until both the consent box and a signature are actually there.

The consent text names the statutes

The federal ESIGN Act, 15 U.S.C. Chapter 96, and Florida's Uniform Electronic Transaction Act, Fla. Stat. § 668.50. It states plainly that the typed name is the binding signature and that a certificate recording the time, the IP address and the device will be appended.

Location is offered, never required

The page asks for a rough coordinate and waits about four seconds. Declining it does not block signing. The certificate simply records that it was declined or unavailable.

The proof

What proof does an e-signature audit trail actually need to hold up?

Fingerprinted before and after

A tamper-evident fingerprint1 is taken of the document as it was sent and of the document as it was signed, both printed on the certificate, each labeled for exactly what it covers. The final delivered file's fingerprint (which includes the certificate page itself) is published separately, out of band, since a certificate cannot fingerprint the file it becomes part of.

A timeline, not a timestamp

Document created, invite dispatched, consent accepted, signature stamped, each with its own UTC time, and the signer's IP and device on the last two. The certificate is appended as the final page of the signed PDF, and the same events are readable from the document's audit endpoint.

The bytes land before the email does

The signed PDF is written to disk before any notification is attempted, so a broken mail server can never cost you the signature. If the copy to the signer fails to send, that failure is logged loudly rather than swallowed.

Signing twice does nothing twice

Reopening a signed link returns the existing result instead of stamping a second signature. If two completions race, the loser's file is deleted rather than left behind as a document that looks signed but was never recorded.

Legal holds and evidence integrity

A signed document can be placed under a litigation hold; SINET re-checks the bytes against the fingerprint stored at signing time to prove nothing changed, with the reasoning framed against the federal rule for self-authenticating electronic evidence.2

1. The tamper-evident fingerprint is a SHA-256 digest, and the signing link carries a 256-bit random token rather than a guessable document number. 2. The self-authenticating-evidence standard is Federal Rule of Evidence 902(14).

Refusals

The things it declines to do are the point.

It will not fetch a document from the internet

Send-for-signature takes a local file only. Hand it an http or https address and it refuses, so a hostile string can't make your server pull a document from somewhere else and put your name on it.

No consent, no signature

An unchecked consent box is a rejected request on the server, not just a greyed-out button in the browser. A typed name under two characters is rejected the same way.

The stamp has to fit the page

A signature box that would fall outside the target page is refused rather than clipped. Encrypted PDFs are refused rather than half-processed.

Sending is owner-only

Creating a document to sign requires an owner session and is rate-limited. Signing is public by necessity (that's the whole point of the link) and the two paths are kept deliberately separate.

What's real vs. what's roadmap

Ships switched off, and the screens are honest about which ones have data behind them.

Off by default, on purpose

The whole service sits behind a flag that ships closed, so a stray merge cannot email one of your clients. With the flag off, the signing page is simply not there: leaving it off the login gate is not the same thing as turning it on.

The Studio is wired; the surrounding screens aren't yet

The E-signature Studio reads real documents to sign and real audit trails from the server. The document list, document detail, templates and compliance-export screens are still layout only, with stand-in numbers. They are not reading your data, and we're not going to say they are.

The record is the disk, not the index

The signed PDF and its database row are the record. Writing a copy into the CRM is a convenience index: if that write fails, it's logged and the signature still stands.

Document preview is best-effort

The signing page renders up to twenty pages so the signer can see what they're signing. On a server without the rendering library, it says so and tells them to review the copy that was emailed. It does not quietly show a blank frame.

Already on DocuSign? SINET works alongside it

SINET also integrates with DocuSign, so a shop already using it doesn't have to rip it out to bring SINET in.

How it compares

SINET against DocuSign, Dropbox Sign, and Adobe Acrobat Sign.

All four skip the signer account. That part's table stakes now. Where SINET differs: the signed record and its certificate land on your own disk instead of living only in a vendor's cloud, and there's no per-document fee.

Feature SINET DocuSignDropbox SignAdobe Acrobat Sign
Certificate carries a SHA-256 hash of the document, taken both before AND after signing Yes: when enabled Partial/unclear from public pagePartial/unclear from public pagePartial/unclear from public page
Full timeline: UTC timestamp plus signer IP and device at every step Yes: when enabled Partial: IP and location confirmed; device/per-step detail unclearPartial: time-stamped, non-editable audit trail confirmed; IP and device at every step not stated on current pagesUnclear: no cited source
Signer needs no account to sign: a plain secure link is enough Yes: when enabled YesYesYes
Consent screen names the specific federal and state e-signature statutes Yes Unclear from public pageUnclear from public pageUnclear from public page
No per-signature or per-document fee Yes no: capped tiers, overage billed pay-as-you-goyes: unlimited on Essentials and upyes, per Adobe’s own claim
Monthly cost Included with every Command Center tier $30/user/mo (Standard, annual billed monthly) to $45/user/mo (Business Pro); a $11/mo Personal tier caps at 5 envelopes a month$15 to $25/mo$14.99/mo annual-billed-monthly (bundled with PDF editing)
Signed record kept on your own infrastructure, not locked in a vendor’s cloud On-disk copy when enabled no: cloud onlyUnclear from public pageno: cloud only

Competitor figures pulled from each vendor's own pricing/feature pages, 2026-09-03; DocuSign re-checked live 2026-09-21. SINET features drawn from what's live today per this page and the internal capability catalog.

Where it fits

Write it. Sign it. Keep it.

SINET is the second half of quote-to-cash: Galley drafts the proposal, SINET closes it with a signature that carries its own evidence. Same Stinger account, no per-document charge, and the certificate lives on your disk rather than in someone else's.

Related: pair SINET with Galley for the proposal that gets signed, or see how it fits inside the full Stinger platform.

Talk to Vincent See Galley

Works with the internet off

Your documents keep working if the internet drops.

SINET works fully offline and makes zero outbound calls once you are signed in.

On your phone and tablet

On your phone: the signing desk. Review the queue before preparing the next packet, separating pending signatures from completed work.
On your phone: the signing desk. Review the queue before preparing the next packet, separating pending signatures from completed work.
On your phone: every document you have sent. Check the list after sending to see which documents are still waiting for a signer.
On your phone: every document you have sent. Check the list after sending to see which documents are still waiting for a signer.
On your phone: place the fields on a document. Review field placement before sending, so the sender can see where each signer is expected to act.
On your phone: place the fields on a document. Review field placement before sending, so the sender can see where each signer is expected to act.
On a tablet: the signing desk. Review the queue before preparing the next packet, separating pending signatures from completed work.
On a tablet: the signing desk. Review the queue before preparing the next packet, separating pending signatures from completed work.
On a tablet: every document you have sent. Check the list after sending to see which documents are still waiting for a signer.
On a tablet: every document you have sent. Check the list after sending to see which documents are still waiting for a signer.
On a tablet: place the fields on a document. Review field placement before sending, so the sender can see where each signer is expected to act.
On a tablet: place the fields on a document. Review field placement before sending, so the sender can see where each signer is expected to act.

On your machine

Get it on your desk

One click from the browser

Install it as an app

Install it straight from the browser in one click. It gets its own icon on your desktop and taskbar, and opens in its own window.

  • Chrome / Edge the Install icon in the address bar, or menu > Install (Apps > Install this site as an app).
  • Safari (Mac) File > Add to Dock.
  • Safari (iOS) Share > Add to Home Screen.

Android

Google Play

On Google Play, in review.

iOS

TestFlight

Via TestFlight, pending.

No app to install to see it, ask Vincent for the demo.

Call now Text now

In House

How SINET runs inside House.

In House, SINET carries banquet contracts, deposit agreements and vendor paperwork, one signed record per event, no separate login. House opens from Command Center.

Back to the House door

Smarter packets

Past a single flat document.

Conditional fields and routing

A packet can show or hide fields, and send the next step to a different signer, based on what an earlier signer answered.

More signer roles

Besides remote signers, you can add someone who signs in person, an approver, or a person who only gets a copy.

Required evidence

A packet can require ID evidence or an attachment from the signer, and it will not complete without it.

Void, copy, correct, comment

You can void a packet you are allowed to, copy it into a fresh draft, fix a draft, and leave comments on it.

Sending and access control

Who can sign, when, and how it starts.

Expiry and signing order

A signing request expires after a default window, and a signer cannot sign out of turn or after it expires.

Access codes

A sender can put an access code on a signer and unlock a signer who gets locked out.

Paper signatures on file

If someone signs on paper, you can attach the signed copy or ID evidence to the same packet.

Starting a document

Start from a blank document, a saved template, uploaded PDF pages or page images, and edit the draft text before it goes out.

Team, records and Annabelle

Who can send, what gets kept, and what Annabelle can touch.

A permitted release, every time

Annabelle can queue a document, but a permitted person releases every send, can reject a draft, and the release is recorded with who did it.

Team management

Invite teammates, set their roles, and let a teammate send on behalf of a named person.

Completion records and export

Each completed packet has a completion record with its hash, and a company can export its document records. These are application records, not a legal certification.

Contacts

Signers can be picked from your imported contacts and your Command Center contacts.

Annabelle at the signing desk

Annabelle can prepare a draft, ask for a void or a reminder and explain where a document stands; a person releases every send.