Several times I’ve seen mention of a DNA match’s failure to respond to an inquiry. I know this might sound simplistic but what’s amazing is the amount of non-spam that I find in my Spam file. I used to automatically delete my spam. Then, when I checked, I’d find email that should have been in my inbox.

Also, I’ve been more successful with responses when I first share my information. Such as “there are Terners in my family tree. It’s available on Ancestry...” “I see you match more closely with my mother whose mother’s name was Terner”
Then I ask about the DNA’s information. I personally think it’s less off putting. Just an idea.
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Shelley Mitchell 
NYC
searching KONIGSBERG/KINIGSBERG, TERNER, MOLDAUER, SCHONFELD - Kolomyya PLATZ - DELATYN. All Galicia.