“Tell me what the fuck it is EVERY GODDAMNED TIME YOU COMMUNICATE ABOUT THE PRODUCT.”

Seriously, so much this. I cannot even count the number of emails I receive along the lines of “We’re happy to let you know that we have launched macaroni.io" or some other crazy name that tells you nothing about what the product or service is.

Just take ONE sentence at the beginning of these emails to remind people what you do. Especially if they are not already users of your site and your goal is to get them to become users / customers.