Nitro Sign review
A Microsoft-oriented e-signature service with templates, authentication, workflows, and API access.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Nitro Sign is a cloud-based electronic signature service for individuals, small teams, growing businesses, and regulated organizations. It supports sending one or multiple documents for signature, predefined form fields, audit logs, manual reminders, signing-order controls, and document activity tracking. Its Microsoft focus makes it a practical fit for teams working across Microsoft 365, OneDrive, SharePoint, or Power Automate, while broader integrations support Google Drive, Dropbox, Box, Salesforce, and Zapier.
Platform coverage includes web, Windows, macOS, and iOS. The integration set gives Nitro Sign a useful place in document and business-application workflows, with API-based integration available for Enterprise customers. Teams can also choose parallel or sequential signing orders, depending on how their approval process is structured. This makes the product more suitable for repeatable internal and external signing processes than for one-off document exchange alone.
Nitro Sign has Standard, Plus, and Enterprise plans, with a 14-day free trial and no free plan. Standard covers core sending, form filling, audit logs, and manual reminders. Plus adds reusable templates, custom fields and workflows, bulk sending, SMS or email code authentication, single sign-on, and custom branding. Enterprise adds API access, advanced and qualified electronic signature methods, digital certificates, ID verification, and tailored enterprise solutions. Choose Nitro Sign if Microsoft ecosystem fit, workflow reuse, and authentication options matter; consider another product if a permanent free tier or broader platform coverage is a priority.
Nitro Sign pros and cons
- Where it wins
- Supports reusable templates, custom workflows, and bulk sending.
- Offers SMS or email code authentication and audit logs.
- Integrates with Microsoft 365, OneDrive, SharePoint, and Power Automate.
- Where it doesn't
- There is no free plan; the free trial lasts 14 days.
- Standard does not include reusable templates or bulk sending.
- API access and advanced signature methods require Enterprise.
Nitro Sign fact sheet, pricing and score →
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