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Email Subject Line Generator

This email subject line generator writes 10 subject lines for your topic from structured templates: two questions, two numbered lines, two urgency lines, two personalized lines and two curiosity lines. Each line is scored with the Subject Line Tester rules for length and spam wording, then sorted so the strongest options come first.

Email Subject Line Generator

Used by the promote goal, for example 20% off or free shipping.

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How to Use the Email Subject Line Generator

Describe the email in a few words, pick a goal and tone, and the generator returns ten scored subject lines at once.

  1. Enter the topic of your email in a few words, such as email deliverability workshop.
  2. Choose the goal and tone, the personalization token your email platform uses and, if you have one, a number or offer.
  3. Select Generate subject lines and compare the ten lines by type, length and score.
  4. Copy the lines or export them as CSV, then test your favorite with real recipients.

Email Subject Line Templates

The email subject line templates cover five common types, two lines each, and the wording changes with your goal and tone.

Personalized Email Subject Lines

Two lines carry a first-name merge tag such as {{first_name}} or *|FNAME|*, which your email platform replaces for each recipient. Choose No token when your list has no reliable first names, and the lines address the reader as you instead.

Urgent Email Subject Lines

Urgency lines name a time frame, such as this week or today, instead of trigger words like urgent or act now. Use them only when the deadline is real, because a false deadline costs trust with every later email.

Professional Email Subject Line Examples

The formal tone swaps casual openers for wording such as Would you like to attend or Dear, which suits clients and senior readers. Each line stays free of fake Re: or Fwd: prefixes and all-caps words that look like spam.

Email Subject Lines That Get Opened

Each line is scored with the same rules as the Subject Line Tester: 15 to 60 characters, no listed spam phrases, at most two emoji and one exclamation mark. The score shows craft, not a forecast, so test the top lines against each other before a large send.

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Frequently Asked Questions

How Long Should Email Subject Lines Be?

Aim for 15 to 60 characters, the range the score rewards. Phones often show only the first 30 to 40 characters, so put the topic near the start of the line.

What Makes a Good Email Subject Line?

A good subject line tells the reader what the email is about and why it matters now, in plain words. It matches the content of the message, because a line that overpromises lowers trust and future opens.

Do Email Subject Lines Need to Be Capitalized?

No. This generator writes sentence case, with only the first word and names capitalized, which reads naturally in most inboxes. Avoid all caps, which looks like shouting and is a common spam pattern.

How Does the Subject Line Rating Work?

Every line starts at 100 points and loses points for being shorter than 15 or longer than 60 characters, for listed spam phrases, for more than two emoji and for more than one exclamation mark. The rating comes from the Subject Line Tester engine, so a line scores the same in both tools.

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