Take a Guided Tour of the Registered Email Service for M1 Clients


Track your important emails and know precisely when they’re delivered and opened, giving you the ability to follow up at precisely the right moment.


Uncertain email delivery can cause disputes over “who said what when.” RMail’s Registered Email technology and Registered Receipt™ email record eliminate uncertainty around email delivery by providing proof of your correspondence.


Easily encrypt sensitive emails and attachments for security or legal compliance.


It is easy to authenticate any Registered Email™ message at any time by anyone who holds a copy of the Registered Receipt™ email proof of delivery record.


Court accepted proof of email delivery, content, and timestamp. The durable, verifiable, and self-contained email proof record that can reconstruct a validated original.


Send Registered Email messages encrypted. Receive audit-ready proof of privacy compliance on a message-by-message basis. Do it with apps, security gateways, or API.

Legal & Court Accepted Proof of Delivery, Content and Timestamp.

Our patented Registered Receipt™ record returns highest level of forensic proof — the only self contained, self-authenticating email evidence record.

Breadth of Services

We’ve built extensive functionality around our Registered Email™ technology. Be sure to explore all of the features to optimize your operations.


We’re elegantly simple to use. But if you get overwhelmed with all of the options, let us know, We’re here to make your life easier.

Legal Proof

Automatically receive robust evidentiary records for your email correspondence in the form of our Registered Receipt™ email record, Think of it as some insurance to protect from the unexpected.


We have features and settings for all of your needs. If you cannot find what you need, let us know, We’re sure we have it or can adjust to accommodate your every need.

We Try Harder to Ensure Your Success

We’re here for you, wherever you need us; whether accessed inside your favorite app, integrated to modernize a business system, or uniquely fitted using our API.

Apps – RMail, RSign a Click Away

Use Inside Outlook, Gmail, Salesforce…

Easy: All-in-One Apps

RMail & RSign apps provide all services built elegantly into one’s existing email or user interface.

Access Apps

Integrations – A Connected World

Modernize Business Processes

Extend: Build In More Value

Modernize your current business processes and extend systems with pre-built RMail & RSign integrations.

Learn More

API – Seamlessly Extend

Uniquely Embed, Automate More

Optimize: Automate More

Optimize workflows tailored to your specific, unique needs, with RMail & RSign API.

Get Started

Think of Us as Your Personal E-Sign & E-Security Concierge. We’re Here For You.

At RPost, we simply can’t afford to make you enter a support queue. Or upcharge for each feature. Or not be the most affordable. Or not continuously innovate so that we can always be the most feature-rich while easy to use. We can’t be anything less than the best e-sign and e-security product with the best people and service to support you.