Email Marketing Spam Rates insights?

Hi Swapd,

I am a beginner email marketer and I am hoping to get some help from an experienced email marketer regarding how spam rates work.

Here’s the situation:

I have sent out 700k emails and 0.08% of the emails sent are being moved to spam. When it comes to spam percentage, should I mainly worry about the “account rep” or domain that comes after the @ symbol (i.e. @swapd.com)?

Which vertical is most important when it comes to spam rate? Is it the domain it’s been sent out from (@swapd.com), the sender name (TURTLE@Swapd.com), or the subject line?

What are the best practices when it comes to minimizing the risk of going to spam rate?

I would appreciate any insights you might have to share.

Thanks.