Send Mass Mail + HTML inserter for Gmail

MailBrother is a Gmail extension that allows users to easily send mass mail campaigns and track their effectiveness. With MailBrother, users can compose their email marketing campaigns directly in Gmail, send emails to undisclosed recipients, and measure the success of their campaigns through real-time statistics. The extension also offers features such as the ability to personalize messages using Google Sheets and insert HTML into emails. With its user-friendly interface and easy installation, MailBrother is the perfect tool for managing bulk email campaigns through Gmail. Visit their website for more information.