Proone starts offering "Electronic Signature Option" that integrates document creation for estimates, orders, and invoices, internal approval, and electronic signatures.

Mitsumo Co., Ltd. (Headquarters: Chuo-ku, Tokyo, Representative Director: Ayako Ishikawa) has started offering an "Electronic Signature Option" for its on-site SaaS "Proone." This option integrates document creation for estimates, orders, and invoices, internal approval, and agreement formation with business partners (electronic signatures). By completing document work, approvals, and signatures—which traditionally tend to be scattered across paper or multiple tools—within Proone, the option aims to reduce the burden of transcription, rework, and waiting for approvals/collections, thereby supporting improvements in operational speed and accuracy.

### Current Offering ### Seamless flow from document creation to approval to electronic signature with Proone

With Proone's "Electronic Signature Option," after creating documents linked to project information, they can be directly routed through an internal approval flow. Approved documents can then be sent to business partners as electronic signature requests. Signatures can be processed via both web and mobile, and the agreement process is recorded as an audit trail.

Key Features

### 1) Supports major documents + custom documents Supported documents: Estimates / Purchase Orders / Invoices / Custom documents. Unique formats for each company (e.g., contracts) can also be managed as custom documents.

### 2) Connects internal approval to agreement with business partners in the same flow Links document creation, internal approval, and electronic signature requests within Proone. Supports rejections and allows progress management according to operations.

### 3) Web/Mobile compatible, initiates signatures with email authentication Signatures are supported on both web and mobile. Initial identity verification is done via email authentication (process from the signature request email).

### 4) Audit trail that tracks "who, when, and what work was agreed upon" Records the agreement process in a traceable manner, reducing the burden of document exchange and verification.

### 5) Third-party software...