I can create a batch of emails using a Google Sheet. This not only includes the template email, but attachments, as well. I sent out a personal email to 110 honor society students. They each received a personalized email with their name and member number. It was very simple to use.

The best of this tool in its simplicity, is very intuitive from the beginning, In addition to being able to use the calculation sheets of drive to manage the sending of personalized mails solves a big problem. Anyone who uses a spreadsheet can use this software without problems.

Mail Merge for G Suite is an excellent tool for sending customized emails in bulk in a simple and clean interface. You can prepare a template in G Suite itself or use their built-in html editor. You can add custom fields in your email. Emails are sent out quickly and statuses for each mail sent out are displayed right in your Google Sheet.