What's the best way to setup a google smtp server for noreply E-Mails sent from a Python application?

Question

We are currently developing a python program that as part of its functionality sends noreply E-Mails to customers whenever something important happens. For testing we are sending them from a free [email protected] address using pythons smtplib library and that works without problems so far.

However when going live we want to change the address to a proper [email protected] address. We are already using Google workspaces and have user accounts with company E-Mails. But while reading up on how to get that to work I came across multiple guides and articles which were either confusing, outdated or don't really do what I was hoping for. So I have a few questions that I hope you could answer.

1. Do I have to create a new user account just for the noreply mails? I have read about aliases and groups but I am not sure that this is the right way to do it since the mails shouldn't be sent from a renamed existing user account. I'd rather not set up a user just for sending E-Mails.

2. How many mails can I send when it is all set up? Free accounts can send 500 daily, workspace users have 2000, up to 10000 with smtp relay (if that's possible)? If the program ever exceeds this limit is there any way to increase it or should I already look for an alternative.

3. Finally how do I set this up? Most guides are for the old Gsuite. I feel like there should be an easy way to set this up that I am missing. All I'm looking for is creating a generic [email protected] address for our project to programmatically send a higher amount of mails.

Thanks for the help.