Steam systems can get blocked but water systems is not normal.

Im still trying to use BP correctly so I dont get blocked again.

If you step wrong you will get blocked and the family wont want to work with you or hear anything you have to say.3.

I was going to reply "A con artist who defrauds investors by passing off distressed properties as turnkey and then runs off to Portugal to escape accountability" but I didn't want to get blocked 😂😂😂

You'll get blocked and delisted on Airbnb.

If the house has trees nearby, it doesn't take much for them to get blocked. 

City sewer lines sometimes get blocked, depending on how old they are, or nearby construction effects, and other issues.

Not sure if this link will get blocked or not, but pretty simple to google. https://www.redfin.com/city/16661/MO/St-Louis

Yes, you will get blocked if you try to use a single zip code for a real estate ad - it has to be a radius and has been that way for quite a while now.

I do know that as your list grows, you might want to look at a campaign manager - regular email providers eventually think that large mailouts look like spam and they get blocked if they suspect thats the case.Campaign managers like Mailchimp and Constant Contact for example, allow larger mail-outs without that risk.