When the signature is part of data collection, FormAssembly is the standout: it captures information, payment, and a legally binding signature in one Salesforce-connected step, with multi-signer support and audit logging. Continue reading
Collecting a signature shouldn't break your data flow. Too often, signing happens in one tool and the resulting data has to be re-entered into Salesforce by hand. The best e-signature tools for Salesforce close that gap: people sign inside a form or document, and the signed record and its data write straight back into your CRM.
The strongest options combine legally binding signatures with genuine Salesforce integration, and ideally the ability to capture form data and a signature in a single step. Below are the top tools and where each fits, whether you need standalone signing or signing built into data collection.
We evaluated each tool on how well it signs and syncs:
✓ Legally binding, compliant e-signatures.
✓ Native or deep Salesforce integration.
✓ The ability to capture data and signature together.
✓ Audit trails for signed documents.
✓ A smooth signing experience across devices.
| Tool | Best for | Salesforce e-sign fit | Standout strength |
|---|---|---|---|
| FormAssembly | Data + signature in one step | Signed data straight into Salesforce | Forms and e-sign combined |
| DocuSign | Standalone e-signature leader | Mature Salesforce integration | Market-leading e-sign |
| Adobe Acrobat Sign | Document-heavy signing | Salesforce integration | Document tooling |
| Conga Sign | Salesforce-native signing | Built for Salesforce | Revenue-ops fit |
| PandaDoc | Docs + signing workflows | Salesforce connector | Proposal/doc workflows |
| Formstack Sign | Forms, docs, and signatures | Suite + Salesforce package | All-in-one |
1. FormAssembly: best for data and signature together
FormAssembly offers e-signature software for Salesforce that captures legally binding signatures as part of the same form your respondents fill out. Signatures are compliant with the US E-Sign Act (and FDA 21 CFR Part 11 for regulated use), support single and multiple signers with a defined signing order, and include timestamps, verification, and event logging. Signed submissions and their data flow directly into Salesforce (as well as HubSpot, SharePoint, Google Drive, Box, and Dropbox), so there's no separate signing step or manual reconciliation. Signers can use a finger, stylus, or mouse on any device, and don't need a FormAssembly account.
Standout features
Integrated e-signature within forms, multi-signer workflows with signing order, US E-Sign Act and 21 CFR Part 11 compliance, event logging, multi-object Salesforce mapping, conditional logic, secure payments, and approvals, so one submission can collect information, a payment, and a signature at once.
✓ Captures data and signature in one connected step.
✓ Signed data writes straight to Salesforce (and other platforms).
✓ Multi-signer support with audit logging and no account needed for signers.
– Best when you need forms plus signatures, not signatures alone.
– Enterprise setup.
Best for: teams that want to collect data and a signature together, connected to Salesforce.
2. DocuSign: best standalone e-signature
DocuSign is the best-known e-signature platform, with a mature Salesforce integration and broad legal acceptance worldwide. It's the default choice for organizations that want a dedicated signing standard. It's signature-first, so pairing it with data capture usually means adding another tool.
✓ Market-leading and widely trusted.
✓ Robust Salesforce integration.
✓ Broad global legal acceptance.
– Signature-first; pairing with data capture needs another tool.
Best for: organizations wanting a dedicated e-signature standard.
3. Adobe Acrobat Sign: best for document-heavy signing
Adobe Acrobat Sign brings enterprise signatures with strong document tooling and a Salesforce integration, fitting document-centric teams. It's a natural fit for organizations already in the Adobe ecosystem. Its focus is documents rather than form-driven data capture.
✓ Powerful document handling.
✓ Enterprise-grade signing.
✓ Fits the Adobe ecosystem.
– Document focus over form-driven capture.
Best for: document-heavy signing workflows.
4. Conga Sign: best Salesforce-native signing
Conga Sign is built to work tightly within Salesforce, especially alongside Conga's document generation and revenue-operations tools. For teams already using Conga for documents, adding its signing is seamless. Its value is highest inside that ecosystem.
✓ Deep Salesforce fit.
✓ Pairs with Conga document generation.
✓ Strong for revenue-ops teams.
– Most valuable within the Conga ecosystem.
Best for: Salesforce revenue-ops teams using Conga.
5. PandaDoc: best for proposals and docs
PandaDoc combines document creation, proposals, and signing in one workflow, with a Salesforce connector for sales teams. It's built around the proposal-to-close process. That makes it broader than signing alone, which suits sales-heavy teams.
✓ Strong proposal and document workflows.
✓ Salesforce connector for sales teams.
✓ Signing built into the doc workflow.
– Broader than signing alone.
Best for: sales teams sending proposals and contracts.
6. Formstack Sign: best all-in-one
Formstack Sign is part of the Formstack suite, pairing signatures with forms and documents and connecting to Salesforce through its package. It suits teams that want signing inside a broader forms-and-documents platform. Its best value comes when you use the full suite.
✓ Forms, docs, and signatures together.
✓ Suite and Salesforce integration.
✓ One vendor for the whole flow.
– Best value within the full suite.
Best for: teams wanting signing inside an all-in-one suite.
Decide if you need data plus signature. If a signature accompanies form data, a tool that captures both at once (like FormAssembly) removes a whole handoff.
Check Salesforce depth. Native or deep integration means signed data updates the right records automatically, not through manual entry.
Confirm legal validity. Ensure the tool meets the e-signature laws relevant to your region and industry, with proper audit trails, and stricter standards like 21 CFR Part 11 if you're in a regulated field.
Match to your document flow. Contract- and proposal-heavy teams may prefer a document-first tool; form-driven teams benefit from integrated signing.
Are e-signatures legally binding?
In most jurisdictions, yes: laws like the U.S. ESIGN Act and UETA recognize e-signatures as legally binding when proper consent and audit trails are in place. Confirm the specifics for your region and use case.
What's the advantage of capturing data and signature together?
It removes a handoff. Instead of collecting information in one tool and a signature in another, a combined step delivers both to Salesforce cleanly, reducing errors and delay.
Do these tools write signed documents back to Salesforce?
The ones with deep integration do. FormAssembly, for example, sends signed submissions and their data directly into Salesforce, as well as HubSpot, SharePoint, Google Drive, Box, and Dropbox.
Which is better, a dedicated e-signature tool or an integrated form tool?
It depends on your process. For pure document signing, a dedicated tool like DocuSign excels. When a signature is part of data collection, an integrated tool like FormAssembly is more efficient.
Can I collect multiple signatures on one document?
Yes, with tools that support multi-signer workflows. FormAssembly lets you assign multiple signers and set the signing order, with event logging for each signature.
When the signature is part of data collection, FormAssembly is the standout: it captures information, payment, and a legally binding signature in one Salesforce-connected step, with multi-signer support and audit logging. DocuSign leads for standalone signing, Adobe Acrobat Sign and PandaDoc for document- and proposal-heavy teams, and Conga Sign or Formstack Sign for those invested in those ecosystems. Decide whether you need signatures alone or data-plus-signature, then choose accordingly.
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