Productivity Rule is a free Gmail extension developed by bidetaggle. Designed to enhance productivity and efficiency in email writing, this tool offers a range of features to help users track time and length of their emails.

With Productivity Rule, users can easily keep track of the time they spend composing emails. This feature allows them to set goals and monitor their progress, ensuring they stay on track and manage their time effectively. Additionally, the tool provides insights into the length of emails, helping users optimize their communication by keeping messages concise and to the point.

By using Productivity Rule, Gmail users can streamline their email writing process and become more efficient in their communication. Whether it's for personal or professional use, this extension offers a valuable resource for those looking to enhance their productivity when interacting with emails.