Your email can be sharp, short and genuinely useful, and still never get read because the subject line looked like every other pitch in the inbox. The subject line has one job: make the right person open it without feeling tricked.
Below are subject lines you can paste straight into a campaign. They use merge tags written exactly as {{params.name}} (business name), {{params.firstname}}, {{params.city}}, {{params.category}} and {{params.website}}. Swap in your own wording where a line has brackets.
A quick checklist before you pick one
Run any subject line through these questions:
- Would a friend send this? Lowercase, short, plain lines tend to look personal. Title Case Marketing Lines look like ads.
- Is it honest about the email? Never use "Re:" or "Fwd:" on a first email. It annoys people and can hurt trust in your sending address.
- Is it short? A rule of thumb: keep it under about 6 words so it fits on a phone screen.
- Does it avoid spam-flavoured words? Skip "free", "guaranteed", "act now", lots of capitals and exclamation marks.
- Does the merge tag fall back cleanly? If {{params.firstname}} is empty for some leads, use a line built on {{params.name}} instead.
- Does the body deliver on it? If the subject mentions their website, the first line of the email should too.
Lines built on the business name
These work well when your list comes from Google Maps and you have a clean business name for every lead.
- quick question for {{params.name}}
- {{params.name}} + [your service]
- idea for {{params.name}}
- noticed something about {{params.name}}
- {{params.name}} on Google Maps
- a thought on {{params.name}}'s reviews
- {{params.name}}, worth a look?
- for whoever runs {{params.name}}
Lines built on the owner's first name
Use these only on leads where you actually have a first name. A broken "Hi ," in the subject is worse than no name at all.
- {{params.firstname}}, quick one
- {{params.firstname}}, question about bookings
- thought you'd want to see this, {{params.firstname}}
- {{params.firstname}} / [your first name]
- {{params.firstname}}, 2 minutes?
Lines built on city and category
These signal relevance without pretending to know the person. Good for niches like gyms, landscapers or painters.
- {{params.category}} in {{params.city}}
- more [jobs/bookings/members] in {{params.city}}
- {{params.city}} {{params.category}} question
- how other {{params.category}} businesses handle [problem]
- spotted you while searching {{params.city}}
- {{params.category}} owners in {{params.city}}
Lines built on their website
Only use these if you have genuinely looked at the site, or your email points to something specific on it.
- your site, {{params.website}}
- small fix for {{params.website}}
- {{params.website}} on mobile
- question about your contact page
- booking button on {{params.website}}
Lines that name a problem or outcome
Pick the one that matches the actual offer in your email. If you sell to agencies or restaurants, pair these with the bodies in marketing agency templates or restaurant templates.
- missed calls after hours
- fewer no-shows
- slow season plan
- getting more 5-star reviews
- empty slots on weekdays
- your Google listing
- quote requests from your site
- referral idea
Follow-up subject lines
For follow-ups you have two choices: keep the same thread (leave the subject the same so it stacks as a reply) or start fresh with a new line. Fresh lines give a second chance to someone who skipped the first subject.
If your tool can branch on opens, match the line to the behaviour:
| Situation | Example subject line |
|---|---|
| Did not open step 1 | different angle for {{params.name}} |
| Did not open step 1 | {{params.firstname}}, shorter version |
| Opened, no reply | one more thought on this |
| Opened, no reply | example for {{params.category}} businesses |
| Clicked, no reply | saw you took a look |
| Last email | closing the loop, {{params.firstname}} |
| Last email | should I stop emailing {{params.name}}? |
For the final email itself, see these breakup email templates.
How to test without guessing
Don't pick a winner by feel. Choose two lines from different groups above, for example one name-based and one problem-based, and send each to a similar slice of the same list. Keep the email body identical so only the subject changes.
Judge on replies, not just opens. Open tracking is unreliable because some mail apps load images automatically, and a subject that gets curious opens but no replies isn't helping you.
In GetClient you can build the list from Google Maps, run verification, and set up the steps in a flow builder with If NOT Opened branches that send a fresh subject line, all in one place. You can preview each step to check the merge tags fill in properly before anything goes out. New accounts get 100 free credits; see plans and credits.
Mistakes to avoid
- Using a clever line the body doesn't support.
- Putting a price or discount in the first subject line.
- Sending the same subject to every niche when a {{params.category}} line would be more specific.
- Changing the subject and the body at the same time, then not knowing which one made the difference.