Want to start sending 5-10 cold emails per day, what do I need?

So I'm planning to start sending 5-10 very personalized cold emails per day.

Is it enough to just buy a domain, create an email account on that domain, and start sending like 5 cold emails per day without getting in spam?

Or do I really need to warm it up and set up SPF, DKIM, and DMARC? (keeping in mind my low volume of cold emails)