Python script

Diving into the 'Email Sender' spreadsheet, one finds a unique model titled 'Python script'. This model is the heart of the operation, designed to send thousands of personalized emails. It's a Python script that works in harmony with a spreadsheet template to dispatch customized emails from a personal computer. Unlike many online services, this model ensures the privacy and security of email lists, content, attachments, and credentials. It's a tool that supports various email platforms like Gmail and Hotmail, and even allows for HTML scripting. It's a free, secure, and efficient solution for mass email sending.