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SPECIFICTION
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Formstack Sign

formstack.com

From $250/mo WebiOSAndroidAPI
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Spec score 7.9 #37 of 68 in E-signature tools

Spec sheet

Purpose
Formstack Sign lets organizations send, sign, and complete business documents such as contracts, agreements, and invoices digitally.Read 11 Oct 2026 · formstack.com
Audience
Formstack describes Sign for organizations handling revenue-generating documents such as contracts, invoices, and agreements.Read 11 Oct 2026 · formstack.com
Free plan
NoRead 19 Sep 2026 · sign.formstack.com
Integrations
Formstack Sign can be paired with Formstack Documents to generate documents and route them for signature; the product also offers an Open API for custom connections.Read 11 Oct 2026 · formstack.com
Security
Listed security features include SSL encryption and password protection.Read 11 Oct 2026 · formstack.com
Founded
2006Read 4 Oct 2026 · formstack.com
API access
YesRead 19 Sep 2026 · sign.formstack.com
Audit trail
Each signed document automatically receives an audit trail that records document activity.Read 11 Oct 2026 · formstack.com
Bulk sending
YesRead 19 Sep 2026 · sign.formstack.com
Delivery
Documents can be sent to signers by email or SMS, with automated email and text reminders.Read 11 Oct 2026 · formstack.com
File formats
The product page lists DOCX, PDF, PPTX, and CSV as supported upload formats.Read 11 Oct 2026 · formstack.com
Healthcare compliance
Formstack says Sign can be used in HIPAA workflows and provides a standard Business Associate Agreement for all accounts.Read 11 Oct 2026 · formstack.com
Mobile signing
Send signing requests by text so recipients can review and sign on a phone or tablet.Read 11 Oct 2026 · formstack.com
Multiple signers
Users can add multiple signers and set the signing order.Read 11 Oct 2026 · formstack.com
Notable limit
The Sign account limits help page says the product currently supports documents sized 8.5 by 11 inches only.Read 11 Oct 2026 · help.formstack.com
Salesforce
With Formstack Documents, signed documents can be sent back to Salesforce and relevant records updated.Read 11 Oct 2026 · formstack.com
Signature fields
Documents can include fields for names, dates, initials, checkboxes, radio buttons, and freeform text.Read 11 Oct 2026 · formstack.com
Templates
Reusable signature templates can apply fields to frequently used documents.Read 11 Oct 2026 · formstack.com

Plans and prices

Suite $250 a month billed annually Forms, Documents, and Sign included · 3 Builder users · 250 document deliveries per month · Unlimited eSignatures Read 19 Sep 2026 · sign.formstack.com
Suite $250 a month paid annually; page also shows $299/month 3 Builder users · 100 Forms · 5,000 Submissions per form · 10GB Storage · 250 Document deliveries per month · Unlimited eSignatures Read 11 Oct 2026 · formstack.com

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