[Idea feedback] Send personalized marketing emails using Google Sheets

Hi everyone -

I'm thinking about building the following idea in my spare time but looking for feedback on the idea:

Product: Easily send personalized marketing emails using Google Sheets

How it would work:

1. When you have a list of users (say entries in a Google Form from a recent survey or a list of users who bought your product you want to reach out to) in Google Sheets, you can make that Sheet available to this app.
2. Drop that link in a text box in the app and then the app can use that Sheet to send emails to
3. Select from a variety of pretty templates (think Squarespace) or drop in your own HTML code.
4. Use your Google Sheets fields to personalize the content of the email (e.g. show/hide modules based on values, personalize name, etc.)
5. Send your email at some TBD cost per send.

My question: Would this be something you'd use? I'm thinking the right users would be indiehackers looking to email users but they don't want to deal with a bigger platform like Mailchimp or perhaps sales people who have no coding experience and just want to be able to send emails to users that are more than just text emails from a mail merge.