Need a very simple automation for my workflow on a MacBook Pro

Hello -

I need help automating the task of magnifying text in an email window on my MacBook Pro. Here are the details of the project:

Every time I click on the buttons within my email client (Airmail) to reply, reply all or forward an email, I would like the text in the body field in the draft email to be automatically magnified so that it's easier for me to read. I do not want to increase the actual font size, just magnify my view of it. The automation should be something I can adjust periodically to increase or decrease the amount of magnification as a set-it-once-until-I-change-it variable.

Requirements:
- No specific tool or software preference, open to recommendations
- Freelancer to suggest the best tool for the task

Timeline:
- Project should be completed within a week

Ideal Skills and Experience:
- Proficiency in automation tools/software for MacOS
- Experience with email management and automation on MacOS
- Strong problem-solving skills and attention to detail

If you have the necessary skills and experience, and can complete the project within the specified timeline, please bid on this project.

Thank you!