Direct mailing letter: General vs. Specific (delinquent taxes)?

I have found a local real estate investor who is currently delinquent on his property taxes on at least 8 multi-family properties that he currently owns. I have a good address for the owner & want to send a yellow letter.

My question: do I send a general letter simply stating that I'm interested in purchasing the property & request that he call, or do I mention the tax delinquency & let him know that I'd like to help him solve this problem. I know there are pro's & con's to each, just looking for more experienced opinions as I've never done a direct mailing.

I'm currently house-hacking my first duplex & am looking to make my next move. Ideally, I'd like to seller-finance one or two of his properties to start but am open to private money or other alternative exit strategies.