Email is a critical communication tool in the digital economy. In e-commerce, it helps ensure shipping notifications and order confirmations trigger correctly after purchases. In software and apps, it is central to the user sign-up and login process, maintaining brand credibility and ensuring users have a seamless experience. However, a single erroneous typo or broken link in an email can damage the reputation of an entire campaign. Email testers help marketers ensure that emails are error-free before sending them to their subscribers.

Essentially, email testers are software programs that walk marketers through an automated pre-send checklist. They can verify email deliverability, confirm links and attachments are functioning properly, and validate HTML and CSS rendering across different browsers and devices. They can also assess email list hygiene through email address validation, and monitor the health of email accounts to maintain a healthy sender reputation.

Testing Email Delivery: Email Testers

Email testing can be an extensive task, but it’s vital for ensuring a consistent delivery of email to your subscribers. Using email testers can help you avoid common mistakes, including subject line errors, typos in the body of the email, and invalid hyperlinks. They can also evaluate the overall email design, including layout, color contrast and image placement, for accessibility (e.g., whether text is legible, and all images contain alt text and focus states).

Many ESPs have built-in tools that offer a quick email preview before sending. Other standalone tools, like PutsMail, allow you to input HTML and test your email against popular client software and browsers.

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Advanced Oxygen Analysis Systems

Oxygen is the 3rd Advanced Oxygen Analysis Systems abundant element in the universe and is critical for life. However, it can also pose a problem in natural gas transmission lines and gathering systems where even trace levels of oxygen can cause costly damage and halt the flow of natural gas.

When gases of different partial oxygen concentrations come into contact with the zirconia sensor, the ions on both sides of the solid electrolyte are exposed to electric fields which create an electromotive force that can be measured. The difference in the measurement value between the two sensors is proportional to the oxygen concentration of the sample gas.

Clearing the Air: The Importance of Hydrogen Sulfide Monitoring Equipment

An alternative to oxygen cells, tunable diode laser (TDL) analyzers use optical filters to concentrate the infrared light that is transmitted through the gas being measured. Gas molecules absorb this infrared light at specific wavelengths based on their molecular structure and this absorption follows Beer’s law. The TDL analyzer can measure very low concentrations of gas.

Traditionally, measuring the oxygen content of hydrogen piping required extracting a sample and reducing its pressure for analysis. With in-situ installation of oxygen analyzers directly into the high-pressure hydrogen piping, operators can continuously monitor the oxygen content of the gas in real time with reduced complexity and enhanced accuracy. In addition to monitoring O2 levels, these systems provide real-time combustion control allowing customers to achieve lowered CO2, SOX and NOX emissions.…