A typical inbox reveals about 60 characters of an email's subject line, while a mobile phone shows just 25 to 30 characters, said Augustine. Get right to the point in about six to eight words.

Email subject lines that convey a sense of urgency, such as those that contain the words "urgent" and/or "important," have open rates that are much higher than normal, according to a recent report by ...

We normally use unless with present tenses when we are referring to the future: Unless can be used with a past participle in a reduced clause when you choose to leave out the subject words and the ...