email delivery confirmation

How Email Open Tracking Works and Its Limitations

October 26, 2026 / in Blog / by Zafar Khan, RPost CEO

Why Engagement Metrics Alone Cannot Establish a Reliable Record of Business Communication.

Every day, businesses send important emails to customers, partners, employees, and suppliers. Some contain proposals, while others carry contracts, payment instructions, legal notices, or time-sensitive information. Once an email is sent, people ask a familiar question: Did the recipient actually open it?

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.