CapyMail is a free, privacy-first mail merge add-on for Google Sheets. Send personalized bulk emails from your spreadsheet with dynamic tags like {{Name}}, attach Google Drive files per recipient, track opens and clicks, and schedule campaigns — all inside Google Workspace.
CapyMail accesses your Google data only to run merges you start: it reads recipient rows from the current Google Sheet, sends the emails you compose through your own Gmail account, and attaches the specific Google Drive files you reference. It never reads your inbox, browses your Drive, or sends data to external servers.