Blueink eSignature API
6.4#13 in e-signature apis softwareFrom $90 a monthWebAPI
VisitBlueink eSignature API vs OpenSign
What both publish
| Fact | Blueink eSignature API | OpenSign |
|---|---|---|
| Integrations | Blueink lists integrations including Airtable, Dropbox, Gmail, Google Drive, Google Sheets, HubSpot, Salesforce, Slack, and Zapier. | The Professional plan lists Zapier integration, Dropbox import and custom Gmail or SMTP sending. |
| Intended users | Blueink describes its API plans as intended for developers and businesses integrating eSignature into products or applications. | The documentation describes the product as designed for individuals and businesses, from startups to large corporations. |
Blueink eSignature API plans
- Bronze (annual)$90 a month
- Bronze (monthly)$108 a month
- Silver (annual)$240 a month
- Silver (monthly)$288 a month
- Gold (annual)$480 a month
- Gold (monthly)$579 a month
OpenSign plans
- FreeFree
- Professional$9.99 a month
- Teams$19.99 a month
- EnterprisePriced on request
Pick Blueink eSignature API if…
You want what its maker publishes above — check its page for the details.
Pick OpenSign if…
OpenSign may suit individuals and businesses that need PDF signing, reusable templates, or API-based signing workflows. It also offers self-hosting instructions for those who want to run it on Linux, macOS, or Windows.