ProtonMail vs GroupMailer: What are the differences?

ProtonMail: Secure email with no compromises. It is the world's largest secure email service, developed by CERN and MIT scientists. We are open source and protected by Swiss privacy law; GroupMailer: Send Emails with Variables through Excel. It solves the answer of sending one email to many people, with only slight changes. Given an Excel sheet with the different variables and destination emails, you can send multiple personalized emails without a hitch. Since it works through Gmail, it's as if you sent it yourself! .

ProtonMail and GroupMailer can be categorized as "Email Services" tools.

Some of the features offered by ProtonMail are:

• Sending limit
• Labels limit
• Storage

On the other hand, GroupMailer provides the following key features:

• Emails
• Send Emails
• Multiple Emails