How to Write Subject Lines People Open.
Here is a hard truth about email. Most people read the subject line and nothing else. If the subject line is dull, your whole email dies right there, unread. You could write the smartest message in the world and it would not matter. So learning how to write subject lines people open is not a small thing. It is the door. If the door stays shut, no one sees the room.
The mistake most people make
Most people write subject lines that are generic or salesy. Things like "Quick question" or "Boosting your sales results." The first one says nothing. The second one screams "I want to sell you something." Either way, the reader's brain files it under junk in half a second. They do not even decide to skip it. They just do. And your email sits there, unopened, forever.
What a good subject line sounds like
A good subject line does three things. It is short. It is specific. And it makes the reader a little curious. Short means a few words, not a sentence. Specific means it sounds like it was written for them, not blasted to a thousand people. Curious means they need to open the email to find out the rest. Get those three right and people open. That is the whole game.
How to do it
Write five, then pick the shortest.
Do not marry your first idea. Write five subject lines fast, before you judge them. Then read them back and pick the shortest one that still makes you a little curious.
From a list of five, you keep "your team's first 90 days" over "I'd love to share how meritt can help with onboarding."
Make it about them, not you.
Drop your company name and your product. Put the reader's world in the subject line instead. A name, a job, a thing they care about. It should feel written for one person.
"Sam, the SDR hiring problem" beats "meritt's hiring platform."
Leave them with a small question.
The best subject lines hint, they do not tell. Say just enough that the reader needs to open the email to get the rest. Do not give the whole story away in the subject line.
"what your top rep does differently" makes them open to find out what.
See the difference
"Boosting your sales team's performance with meritt's all-in-one hiring solution." It is long. It is all about you. And it reads like an ad. Straight to the bin.
"Sam, your last two SDR hires." It is short. It uses Sam's name. It points at something real in Sam's world. And it makes Sam want to know what you noticed. So Sam opens it.
Same email underneath. A totally different result. The strong version is shorter, it speaks to one person, and it leaves a small itch only the email can scratch. That is why it gets read.
How you'll know it's working
You will know it is working when the short, specific, curious version comes out first. You will not have to fight for it. More people open your emails. Fewer get ignored. Try this check on your next send. Is the subject line six words or fewer? Does it sound like it was written for one person? Does it make you want to peek inside? If yes to all three, you have got it. That is a skill that pays you back on every email you ever send.
Questions people ask
What makes a good email subject line?
A good subject line is short, specific, and curious. Short means a few words, not a full sentence. Specific means it sounds written for one person, using their name or their world. Curious means it hints at something the reader has to open the email to learn. meritt teaches this three-part test because it lifts open rates without any tricks or clickbait.
How long should a subject line be?
Keep it to a few words, ideally under six. Most inboxes cut off long subject lines anyway, especially on phones, so the front words do all the work. A short subject line also feels less like an ad. A simple test: write five versions and pick the shortest one that still makes you a little curious.
How do I make a subject line stand out without sounding salesy?
Drop your company name and your product. Point at the reader's world instead. Use their name, their job, or a real problem they face, and leave a small open question. Salesy subject lines brag about you. Subject lines that get opened are about the reader and make them curious enough to look inside.
Should I test different subject lines?
Yes. On your next send, try two subject lines and track how many people open each one. Over a few sends you will see a clear pattern of what your readers respond to. You do not need fancy tools to start. Even a simple note of which one won teaches you more than guessing ever will.
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