Creating multiple gmail accounts, how to do it safely without leaving a footprint?

Hey guys, i'm planning of creating 50-100 or even more gmail accounts which i will be using for cold emailing. My question is , how do i create multiple gmail accounts safely without leaving any footprint/without connecting them with each other? I also have the list of specific questions , maybe you could answer them:

1. Should i create each account on a different IP? Should i use TOR browser for that purpose?

2. What sms verification provider do you recommend to use? Is smspva.com good?

3. If i create accounts on TOR browser , but later on use them on a different IP , won't i need to phone verify my accounts? So my accounts would be lost in this way..?

4. Do you recommend to add recovery email or that's not needed?

5. Can i create gmail accounts on TOR , so each creation has a unique IP, and later on login through chrome+portable with proxy for managing these accounts? Or would i be leaving a footprint in this case?

What are your other tips guys for creating gmail accounts in mass? Let me know, thank you!

I think there is a bot on the market

You can install a virtual machine and duplicate it when need t, so that you have a different mac address... install also multiple web-browsers in the original VM and use private proxies... anyhow most likely you'll get a verification request, so is better if you have multiple SIM cards at had...

my 2 cents

eventually it was ask for SMS verification. You can use smsnft.lol for that or some other online sms services. Although, not many work well.

Use iphone to create multiple gmail account. Jailbreak is a must

You could use an sms service online for verification and pay for the text or simple buy some gmail accounts from the marketplace here for $0.20 each or less