SendIQ is a free Chrome add-on designed to enhance Gmail's email capabilities by allowing users to send personalized mass emails efficiently. It eliminates the need for BCC by sending each message as an individual email, ensuring that recipients receive their own unique thread. With features like smart personalization using placeholders such as {{name}}, users can create tailored messages quickly. Additionally, the tool offers scheduling options, allowing users to set specific times for sending emails, and operates seamlessly in the background without interrupting workflow.

The user interface is clean and intuitive, integrating smoothly with Gmail's native compose window. SendIQ also respects Gmail's sending limits with built-in pacing, making it a reliable choice for various purposes including outreach, recruiting, and community updates. The application prioritizes user privacy by sending emails through Google's official API and storing settings locally, ensuring data security while maintaining a straightforward and effective email sending experience.