OPEX for Business

Secure e-signing, built for business

Send contracts, NDAs, proposals, forms and other documents for signature in minutes. OPEX for Business is a standalone, Australian-built platform with SMS-verified signing, a complete audit trail and simple per-document pricing.

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Proprietary e-signing technology
ISO 27001 certified
No seat licences

Documents4 / 4 signed

Mutual NDALegalAwaitingSignedSMS verified
Employment contractPeopleAwaitingSignedSMS verified
Consultancy proposalSalesAwaitingSignedSMS verified
Vendor MOUProcurementAwaitingSignedSMS verified

Executed documents returned & securely stored

Why teams choose OPEX

Everything you need to send, sign and manage documents

OPEX for Business gives every team access to the complete e-signing platform. No seat licences, no feature tiers and no unnecessary complexity, just simple per-document pricing.

Send in seconds

Upload a document, add the required fields and send. Signers do not need an account.

Sign on any device

Sign securely from a desktop, tablet or phone, without downloading an app.

SMS-verified signing

Verify each signer using a unique code sent to their mobile at the time of signing.

Legal-grade evidence

Every completed document includes a detailed audit report and certificate of completion.

Multiple signers and signing order

Choose sequential or simultaneous signing, with automated reminders to keep documents moving.

Revise and resend

Return a sent document to draft, make changes and resend it without incurring another envelope fee.

Bulk send

Send the same document to multiple recipients in a single workflow.

SSO and access controls

Use Microsoft Entra ID sign-in and role-based permissions to manage access across your organisation.

Australian data residency

Built and hosted in Australia, with your organisation’s data stored locally.

In a few clicks

Upload, send, signed

Three steps from a file on your desktop to an executed document in your records.

Configuration
Signing parties
Prepare & send

Index

Consultancy proposal 2026

A. NguyenRivergum Holdings Pty LtdSigned
J. OkaforYour firmSigned

Attached

Mutual NDA.pdf

Schedule 1 - scope.pdf

DownloadShare documentArchive

Consultancy proposal 2026Page 1 of 4

Consultancy Proposal

Part A: Proposal Schedule

Prepared by: Your firm
Client: Rivergum Holdings Pty Ltd
Client contact: A. Nguyen
Proposal date: 12/03/2026
Valid until: 10/04/2026
Term: 12 months

Status12/03/2026

Document created09:14:02
Sent to partiesA. Nguyen · J. Okafor09:16:41
SMS code sent+61 491 570 156 · 41890209:21:07
Signed by A. Nguyen09:22:35
SMS code sent+61 491 570 159 · 73048609:31:52
Signed by J. Okafor09:33:18
Signed by all parties09:33:21

Executed & stored2 of 2 parties signed · SMS verified · SHA-512 audit report19m 19s

01
Upload & prepare
Upload any file and drop signature, date and text fields exactly where you need them.
02
Send for signing
Share secure links and choose ordered or simultaneous signing. Reminders go out automatically.
03
Signed & stored
Signers are SMS-verified, then the executed document is returned and securely stored.

Proprietary e-signing technology

Secure signing. Evidence built in.

OPEX for Business runs on the same proprietary e-signing engine that powers our real estate platform. There is no third-party signing layer, so identity verification, signing events and transaction evidence are captured directly within OPEX.

Explore OPEX security

SMS verification for every signer
Complete audit report and certificate of completion
SHA-512 fingerprint on every executed PDF
Encryption in transit and at rest
Australian data residency
ISO 27001-certified security controls

Get started

Start signing in minutes

Book a walkthrough with our Australian team, or get set up and send your first document today. Onboarding and training are free.

Book a demo Explore OPEX for Real Estate