Signable API review
A flexible signing API with embedded channels, templates, webhooks, and test mode.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Signable API lets businesses and software teams create envelopes, upload documents, assign signers, collect electronic signatures, and track completion. It is aimed at internal workflows, customer portals, onboarding systems, CRM processes, and partner or reseller platforms that need signing inside an application or service. Its feature set covers templates, custom fields, contacts, sub-accounts, event notifications, and document retrieval.
Pricing is organized around several paid tiers. Pay As You Go does not include API access or webhooks. The Small plan costs $43 per month when billed monthly or $473 per year when billed annually, with API access, unlimited users, and unlimited templates. Medium costs $99 per month and adds Teams, bulk send, and Single Sign-On. Large costs $242 per month and adds IP allowlisting and an account manager. Corporate costs $425 per month and includes those Large features plus free unlimited training. A 14-day trial is available, but there is no free plan.
Embedded signing is the product's clearest differentiator for teams choosing how recipients complete documents. Applications can use signing URLs, iframe, redirect, email, or SMS, while webhooks report envelope and signing events. Separate test API keys support a test mode, and signed-document and envelope download URLs support retrieval after completion. Signable API is a sensible fit for teams that need multiple signing channels and control over the surrounding workflow. It is less suitable for buyers seeking a free entry tier, a broad integration ecosystem, or built-in signer identity verification.
Signable API pros and cons
- Where it wins
- Embedded signing via URLs, iframe, redirect, email, or SMS
- Reusable templates, custom fields, and predefined party roles
- Webhooks, test API keys, and signed-document download URLs
- Where it doesn't
- API access and webhooks are excluded from Pay As You Go
- No free plan is available
- Signer identity verification is the customer's responsibility
Signable API fact sheet, pricing and score →
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
Last updated · How we research and update