The first line of a sales email decides everything: how to write it

The first line of a sales email decides whether the rest gets read, because the recipient sees it in the preview even before the email is opened. A good opening line is about a concrete event at the recipient's company. A bad one is about you, or about nothing at all.

Why does "hope you're doing well" kill the email?

Because that line says exactly one thing: the sender knows nothing about me. The same opening is sent in thousands of emails every day, and the recipient's brain has learned the pattern. Template in, delete out. The decision is made in under two seconds, often right in the preview.

The same verdict hits the whole family of empty openings:

• "Hope you're doing well"
• "I just wanted to follow up"
• "We haven't spoken in a while"
• "My name is X and I work at Y"

The common thread: all of them could be sent to anyone. That is the definition of a dead first line.

What should the first line be about?

The recipient. More specifically: a concrete, verifiable event at the recipient's company. We call it the signal. A signal is the reason you are reaching out today and not three months ago.

Examples of signals that carry an opening line:

• The company is hiring for a role that says something about where they are
• The recipient has changed roles or been given more responsibility
• The company has raised capital, opened an office or launched something
• They have published something that connects to your area

The signal does two things at once. It proves the email was written to this specific person, and it gives the recipient a logical reason to reply now.

What do good and bad opening lines look like?

Fictional, generic examples, but the principle is real:

Bad: "Hi Anna, hope your week is off to a good start. My name is Johan and I work at a company that helps businesses like yours streamline their sales process."

Three lines without a single word about Anna. Deleted.

Good: "Hi Anna, saw that you're hiring two salespeople for the Gothenburg office."

One line, one verifiable event, zero filler. Anna immediately knows the email was written to her, and the next sentence gets a chance.

Bad: "We reached out a year ago and I thought I'd check if it's more relevant now."

References your silence instead of their reality.

Good: "Congratulations on the new role as head of sales. When we spoke with you last year, the question sat with your predecessor."

Signal plus history. That combination is hard to delete unread.

How long can the email be?

At most 60 words total. Not per paragraph, total. A busy decision maker reads the whole email in the preview or not at all, and every sentence that does not earn its place lowers the chance of a reply.

The structure that fits within 60 words:

1. The opening on the signal. One sentence.
2. The link to a problem worth solving. One to two sentences.
3. A question as the CTA. One sentence, with a question mark.

The question as a close is decisive. "Worth 20 minutes?" gives the recipient a low-effort decision. "Feel free to book a demo in my calendar next week" gives the recipient a task. Questions get replies, tasks get postponed.

Does this scale?

That is the honest objection: research per recipient takes time, and a salesperson cannot do it for hundreds of old leads. That is exactly the problem Leo, Revexa's AI, is built for. Leo monitors your dormant B2B leads, waits for the signal and writes the opening line on the concrete event, with human visibility before anything is sent during the pilot. Run the numbers on your own list in the calculator on the home page.

Common questions

Should the subject line also build on the signal?

Yes, ideally short and concrete, for example two to four words that tie to the event. Avoid sales words and caps, they trigger both spam filters and skepticism.

What do I do if there is no signal?

Wait. An email without a reason competes with every other email without a reason. Monitor the lead and send when something happens, that always beats sending because it was time.

Does flattery work as an opening line?

Rarely. "Impressive journey you've been on" is as generic as "hope you're doing well". A concrete observation without a judgment beats praise.