Outlook

How to Send a Certified Email for Legal Proof

May 15, 2026 / in Blog / by Zafar Khan, RPost CEO

Certified Email Adds Proof of Sending, Delivery, and Content.

When an email carries legal, financial, contractual, or compliance weight, “I sent it” is rarely enough. A standard sent-folder copy, read receipt, or screenshot may not help you prove delivery, timing, or exact content if the recipient later says, “I never got it,” or “that was not what you sent.”

“What is Legal Proof? An Email Record that Serves as an Evidence!”

October 09, 2020 / in Blog / by Zafar Khan, RPost CEO

What is “Legal Proof”? Optimize! Panelists Share a Decade of Use in Courts In the early 2000’s, RPost coined the term “Legal Proof®” to describe what one received when they sent a Registered Email™ message. There is no such thing as “Illegal Proof”, so what could “Legal Proof®” really represent?

Quiz: How Do You Know Your Email Was Delivered?

February 29, 2016 / in Blog / by Zafar Khan, RPost CEO

We all send emails — some trivial and others that are incredibly important or time sensitive. For the important email messages, how do you know – and prove – that your email was delivered?

Litigation Counsel Guide: How to Prove Service of Court Documents by Email – Update

December 07, 2012 / in Blog / by Zafar Khan, RPost CEO

This posting should serve as a reference guide for process servers or lawyers who need to prove service by email. (1) Serve by email

Litigation Counsel Guide: How to Prove Service of Court Documents by Email

July 11, 2012 / in Blog / by Zafar Khan, RPost CEO

This posting should serve as a reference guide for process servers or lawyers who need to prove service by email. (1) Request permission to serve by email