API Access
Programmatic endpoints for creating, sending, and retrieving signed invoices, enabling automation with ERP and billing systems for end-to-end processes.
Standardized PDF invoices reduce manual errors, speed approvals, and create consistent records for accounting and audits across teams.
A Finance Manager reviews invoice line items, confirms accounting codes, and enforces approval thresholds. They rely on consistent PDF invoices and traceable histories to reconcile accounts, prepare month-end reports, and support external audits with documented approvals and timestamps.
A Project Lead validates billed deliverables and hours against project milestones. They use approved PDF invoices to confirm client billing, escalate discrepancies, and preserve signed records tied to project budgets and change orders for future reference.
Finance, procurement, operations, and project managers commonly prepare or approve PDF invoices for internal management and external billing.
These stakeholders need reliable templates, approval workflows, and audit trails to close periods and maintain accountability.
Programmatic endpoints for creating, sending, and retrieving signed invoices, enabling automation with ERP and billing systems for end-to-end processes.
Granular user roles and permissions control who can edit templates, send invoices, or approve payments to maintain separation of duties.
SSO integration simplifies user access management and enforces corporate authentication policies for managers across systems.
Conditional logic and parallel approvals address complex approval matrices and expedite routing for routine versus exception invoices.
Field-level validation prevents missing tax IDs or incorrect totals before a PDF is finalized and routed for signature.
Configurable retention and export rules ensure invoices are kept according to policy and legal requirements for audits.
Customizable invoice templates enforce required fields, standardize branding and tax calculations, and reduce manual edits while ensuring invoices meet internal management review criteria.
Send many invoices in one operation with individualized fields populated per recipient, reducing repetitive tasks and ensuring consistent delivery to managers.
Configurable routing rules direct invoices to the right managers based on department, amount, or project, enforcing thresholds and sequential approvals.
An immutable log records actions, timestamps, IP addresses, and authentication methods for each invoice transaction to support audits and dispute resolution.
| Setting Name | Configuration |
|---|---|
| Approval Chain Rules | Sequential approvals |
| Reminder Frequency | 48 hours |
| Signature Authentication | Email plus MFA |
| Retention Period | 7 years |
| Export Format | PDF/A |
Creating and approving PDF invoices is supported across modern desktop and mobile platforms with current browsers and secure apps.
Ensure devices run supported OS versions and have up-to-date browsers or the vendor app installed to maintain security, compatibility, and consistent rendering of PDF invoices across reviewer devices.
A services firm standardized invoice templates and merged time entries into PDF invoices for monthly billing
Leading to faster collections and clearer revenue recognition.
A university procurement office converted vendor invoices to fixed PDFs and required signed approvals for high-value spend
Resulting in auditable trails and smoother sponsor reporting.
| Feature | signNow (Recommended) | DocuSign | Adobe Sign |
|---|---|---|---|
| eSignature Compliance | ESIGN/UETA | ESIGN/UETA | ESIGN/UETA |
| Bulk Send | |||
| API Availability | REST API | REST API | REST API |
| HIPAA Support |
7–14 days
As stated on invoice
7 years
30–90 days
Annual
| Plan / Vendor | signNow (Featured) | DocuSign | Adobe Sign | HelloSign | PandaDoc |
|---|---|---|---|---|---|
| Starting Price | $8/month per user | $10/month per user | $14.99/month per user | $15/month per user | $19/month per user |
| Free Trial | 7-day trial | 30-day trial | 14-day trial | 14-day trial | 14-day trial |
| Bulk Send Included | Yes, in plans | Add-on or higher plan | Included in plans | Add-on | Included in business plan |
| API Access | Available on plans | Available with subscription | Available on plans | Available | Available on business tiers |
| HIPAA-compliant Options | Available | Available | Available | Enterprise only | Available on higher tiers |