A single phrase — your email subject line — can either make or break the whole sequence. Failure to grab the reader’s attention or stand out in some way will have most recipients simply deleting the email without giving it a second thought, regardless of how meaningful your message is. Worst case scenario? They’ll also report your email as spam. Making a good first impression with your subject line, on the other hand, can help you start a conversation and open unlimited business possibilities. That is why we’ve decided to share some of the best practices we’ve developed over the years along with the proven formulas and templates to spur your imagination and help you come up with appealing subject lines.