E-Sign
E-Sign: A sandboxed signing API for teams that can use E-Sign’s Enterprise plan. Ranked #23 of 26 in E-Signature APIs Software by our editors (7.5/10); pricing: Pricing on request · 14-day trial; best for developers seeking a straightforward sandboxed API.
At a glance
- Editor score7.5 / 10
- PricingPricing on request · 14-day trial
- Best forDevelopers seeking a straightforward sandboxed API
- Free planNo
- Sandbox environmentYes
- Facts checked24 Sep 2026
Where it wins
- Separate sandbox environment for API testing
- Embedded signing via iframe, with OAuth2 authorization
- Webhooks track created, completed, signed and declined envelopes
Where it doesn't
- API access is included with the Enterprise plan
- Enterprise pricing is custom and based on envelope volumes
- No free plan
Our verdict on E-Sign
E-Sign combines an electronic signature platform with a REST API for applications that need to create, send and manage signature envelopes. Developers can upload documents, create envelopes, manage users, track signing progress and receive updates through webhooks. A separate sandbox supports API testing, while iframe-based embedded signing enables signing within another application. It is aimed at organisations from small teams to enterprises that want to incorporate signatures into document workflows.
API access is an Enterprise-plan feature, and the plan includes bulk sending, annual envelope limits and unlimited users. According to the published pricing information, Enterprise pricing is custom and based on envelope volumes. E-Sign also offers a 14-day free trial, but there is no free plan. Teams evaluating the API should account for the Enterprise requirement and contact-sales pricing; the listed Personal, Standard and Business rates apply to platform plans and do not include API access.
The integration list spans Microsoft, Salesforce, HubSpot, SharePoint, Dropbox, Google and Microsoft Power Automate. OAuth2 delegated authorization and webhooks for envelope-created, completed, signed and declined events support integration workflows, while chat, phone, ticket and documentation are listed support channels. E-Sign lists ISO 27001, GDPR and SSO/SAML, and is available on web and through a browser extension as well as its API. Choose it if embedded signing, a sandbox and those integrations fit your workflow and Enterprise terms work for your organization; consider alternatives if API access outside Enterprise or a free plan is essential.
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E-Sign pricing
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E-Sign fact sheet
| Free plan | No |
|---|---|
| Paid from | Not verified |
| Sandbox environment | Yes |
| Monthly envelope limit | Not verified |
| Signing methods | Both |
| Webhook events | Yes |
| Bulk sending | Yes |
| SDK languages | Not verified |
| Free trial | 14 days |
| Deployment | Cloud, Browser extension |
| Platforms | Web |
| Compliance & security | ISO 27001, GDPR, SSO/SAML |
| Support | Live chat, Phone, Tickets, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 7 integrations: Microsoft, Salesforce, HubSpot, SharePoint, Dropbox, Google … See all → |
| Pricing | Pricing on request · 14-day trial (source) |
| Website | esign.co.uk |
| Facts checked | 24 Sep 2026 |
E-Sign integrations
E-Sign lists 7 integrations on its own site.
- Microsoft
- Salesforce
- HubSpot
- SharePoint
- Dropbox
- Microsoft Power Automate
Alternatives to E-Sign
- DocuSign eSignatureAn e-signature suite with flexible workflows, API embedding, and plans for different team sizes.9.4
- Zoho SignA flexible e-signature service with free entry, broad integrations, and enterprise APIs.9.2
- Dropbox SignAn e-signature service with embedded API workflows, templates, and mobile apps.9.0
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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