BoldSign vs Dropbox Sign API

BoldSign is an electronic signature service for sending, signing, and managing documents. It offers templates, bulk sending, audit trails, SMS authentication, and signature ordering, along with APIs and SDKs for embedding signing workflows in applications. Android and iOS apps support mobile signing, and Chrome and Edge extensions are available. The free Essential plan includes 25 envelopes per month, two templates, and one user. A 30-day free trial does not require a credit card; paid plans start at $5/user/mo (annual). Team collaboration, roles, custom permissions, and single sign-on are included in Business and higher plans. Listed integrations include Salesforce, HubSpot, OneDrive, Power Automate, Zapier, and Xero. BoldSign states that it uses AES-256 encryption and complies with SOC 2, GDPR, HIPAA, and PCI DSS. It describes its signatures as legally enforceable under the ESIGN Act, eIDAS, and global laws. Essential support includes email, chat, and phone.

Dropbox Sign API lets developers add electronic signature workflows to their own websites and applications. Embedded request, signing, and template-management steps can appear in iFrames, with custom branding for senders and signers. Reusable templates can hold preloaded data for recurring signature processes. The service connects with Dropbox, Microsoft Word, Salesforce, Google Drive, HubSpot, Slack, and other CRM, storage, and productivity tools. Its listed security provisions include OAuth 2.0, 2FA, AES 256-bit encryption at rest, and non-editable audit trails that time-stamp document actions. Dropbox Sign lists SOC 2 Type II, ISO 27001, eIDAS, and GDPR compliance. Its signatures are legally binding in the United States, European Union, United Kingdom, and many other countries. SDKs are available for Python, Ruby, PHP, Java, NodeJS, and C#, and development help is available through documentation, the Help Center, and email support engineers. Senders and signers can use the service end-to-end in 22 languages. Free plans are listed; paid pricing starts at $75/mo. More than 500 requests per month requires contacting sales.