Writing proper subject lines is important since most people decide whether to open and read an email on the basis of subject line alone.
Here is a statistics that may shock you: did you know that the “read rate” for commercial email is somewhere around 30%?
That is, 70% of normal non-spam commercial email are NOT read. This is true even for doubled-opted-in lists that people subscribe to voluntarily.
So what decides whether your emails would be among the 30% that is read? Your SUBJECT line. That’s how important it is.
Here are some rules to help you write the best subject line for your emails:
1) Stay away from hype, respect your recipient's time and intelligence, and deliver the promise.
There used to be a time when people used to “experiment” with the subject line and include teaser words like “Incredible!” or “sex” to motivate the reader click and read it. But those days are long gone. Now such cheap tactics and rightfully regarding as “text stuffing.”
If you resort to text stuffing, one of two things will happen:
a) Your email server will automatically label your email as SPAM and throw it into the SPAM box. Your letter will never be delivered.
b) Your letter will be delivered but your recipients will be so disappointed that they will unsubscribe from your list or get offended and review their relationship with you.
Here are some spam words that will likely be flagged by spam filters:
FREE, AMAZING, GIVEAWAY, SEX, UNBELIEVABLE, THE BEST EVER, INCREDIBLE, LOTTERY, YOU’VE WON, GET PAID, MEDICATION, GREAT DEAL, PILLS, DRUGS, UNLIMITED INCOME, MILLIONAIRE, etc.
This is the reason why the spammers resorted to cheap tactics like spelling the FREE as “f-ree”, “f.ree” etc. to throw off the spam filter settings and push the message through to your inbox.
However that still leaves unresolved the problem of user dissatisfaction.
When people feel that they’ve been deceived and manipulated, they would not buy your product or they won’t be your readers or friends for too long.
2) Don’t write a subject line that is generic and abstract. Such emails will more often than not be disregarded.
Apply the Golden Principle of “Don’t Make Them Think”. Your subject line should be so clear and obvious (while being short) that people would have a good reason to click and read the rest. If your subject line forces people to think, you’ll lose a part of your readers right away.
For example, imagine the following bad subject lines:
“Here it is!” (Here it is WHAT? People usually don't have the time to solve riddles and puzzles.)
“Why?” (Totally provocative trick subject line. People will skip over your email thinking “Why Not?”)
“Guess what?” (Another bad subject line, showing no respect for people’s time or patience.)
“Information” (Information about WHAT?)
Here are much better subject lines:
“Here is the time table you requested about Queens Subway Train #7”
“Pro-Check test boards sent to Boston, per your request”
“Wanna have lunch today at 1:15?”
“A question about the Annual Report dated Feb 4, 2008”
“Meet Pam Brown - our new Regional Vice President for Corporate Accounts”