Email proof

When Should You Use Certified Email Instead of Regular Email?

September 25, 2026 / in Blog / by Zafar Khan, RPost CEO

When Proof of Email Delivery, Content, and Timing Matters.

Most business emails, such as a quick project update, meeting follow-up, or routine question, don’t need special proof or evidence. Rather, they can usually be handled with regular email. But some messages carry more weight. For instance, a deadline may depend on when a notice was delivered, or a customer may later dispute what was sent. In such situations, simply having a copy in your Sent folder may not provide the email proof you actually need.

How to Prove Email Delivery & Replies: Solving the ‘I Didn't Get the Email’ Excuse

February 25, 2025 / in Blog / by Zafar Khan, RPost CEO

What May Seem Like a DOGE Dodge -- “I Didn’t Get the Email”—May Be a Legit Technical Issue.

Armand here, RPost’s product evangelist armadillo. Since I am apolitical, I thought I would opine on only the technology that DOGE appears to be using via the US Office of Personnel Management (OPM) to send notices to Federal employees across various departments, agencies and entities, and common misconceptions related to email delivery.

Verifiable Forensic Record of Email Delivery

March 12, 2018 / in Blog / by Zafar Khan, RPost CEO

Why the Best Email Evidence Does Not Eliminate the Entirety of Disputes It is well accepted worldwide that the Registered Receipt™ email record is the gold standard for email proof — timestamped and verifiable proof of successful email delivery including content delivered, regardless of recipient settings, and without need for any recipient compliant action.

Is Proof of Delivery of Service by Email Needed If You Have A Certificate of Service for Email Sent?

January 17, 2013 / in Blog / by Zafar Khan, RPost CEO

Is proof of delivery of Service by Email needed if you have a Certificate of Service for email sent? Considerations with Florida Mandatory Serve by Email Rule. The following is a response to a lawyer question prompted by a recent Florida Bar member benefit email referencing the new Florida mandatory Service by Email Rules of Judicial Administration.

RPost’s E-Postal Solution Gains Traction in Latin America

June 22, 2011 / in Blog / by Zafar Khan, RPost CEO

RPost has set the standard for email proof, privacy, and electronic signatures globally. In 2009, the Colombian postal service 4-72, Colombia’s Digital Signature Certifying Authority – Certicamara, and the technology arm for Colombia’s Chambers of Commerce, teamed with RPost to launch RPost’s Registered Email™ service as the official certified electronic mail service – locally know as CertiM@il. […]