Usually FSBO listings (but there are other techniques).  

(I understand this may just be a term you used, but if your agent is a Realtor, I would question their ability to handle your listing at this scale and price point).2.

Not high on my priority list. do you have dog or dogs.. 

I can get a list of about 6,000 after applying zip code filters, room count, etc.

I've had HUD forms filled out billing me for pro-rations that were the seller's responsibility, agents who have lost track of contingency removal dates, ... the list goes on and on.

who would post tons of local rental listings and had a massive following on IG and YT.

If yes, and they have multiple property addresses, do you use your own form to list all the addresses with Y/N checkboxes next to each?

For example, if a home has an accurate value and list price of $450,000 and I can get if for $400,000 (because of incentives and timing), and it sells for $490,000 three years later, I am not as concerned with a monthly break even cash flow scenario.- Some builders aren't as friendly to investorsI hope that helps.Thank you so much!

I'd build a quad, and there is a laundry list of ways one can select to be amply rewarded for such. 

I engaged my webmaster - SEO expert to handle it and she contacted Mailchimp and was able to secure a new account for us, with her listed as having the final authority to authorize a mailing.  24 mailing later never another problem.