Email Characters is a free Chrome extension developed by naomiwest1000. It falls under the category of Browsers and is classified as an Add-ons & Tools program. This tool is specifically designed for email copywriters, providing them with a convenient way to determine where subject line and preheader text will cut off on various devices based on character count.

With its user-friendly interface, Email Characters allows copywriters to highlight the text intended for email subject lines and preheaders. By checking against a range of email client devices, including Mobile and Desktop Gmail Apps, iPhone Mail App, Mobile and Desktop Outlook Apps, and Desktop Yahoo App, this extension helps ensure that important information is not cut off.

By utilizing Email Characters, marketers can increase email open rates by ensuring that crucial details are visible to users on major email clients. This tool is a valuable asset for email copywriters, providing them with the means to deliver effective and engaging content to their target audience.