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Cold email subject line grader
'question about idea stump grinding' grades A (95/100): no merge field such as {{company}}, it reads fine. Short, lower-case, specific subject lines like 'question about {{company}}' work best for cold email to local business owners.
Updated 5 Nov 2026. Free, no account.
Result for
question about idea stump grinding
A 95/100 grade A
- no merge field such as {{company}}
| Length | 5 words, 34 characters |
| Spam words | none |
| Marketing markers | none |
| ALL-CAPS words | none |
| Exclamation / question marks | 0 / 0 |
| Emoji | 0 |
| Merge fields | none |
| Question or curiosity | yes |
Mobile preview
A phone inbox shows about the first 35 characters:
Three rewrites
20 cold email subject lines for local businesses
Lower case on purpose: a subject line that looks typed by a person gets opened like one. Merge fields match the 67Leads CSV.
question about {{company}}grade{{company}} on google mapsgradequick idea for {{company}}gradenew customers at {{company}}grade{{first_name}}, quick questiongradelocal business in {{city}}gradeidea for booked jobsgrade{{company}}'s google reviewsgrade{{company}} websitegrademissed calls in {{city}}gradenoticed {{company}} on the mapgradefor the owner of {{company}}grademore new customers?grade{{city}} local businessesgradebooked jobs questiongradesaw {{company}} onlinegrade{{first_name}}, missed calls?gradeworth a look, {{first_name}}?grade{{company}} on googlegrade{{company}} in {{city}} searchesgrade
How this works
The grade is rule-based and runs on the line you type. It starts at 100 and takes points off for length outside 2 to 6 words or over 45 characters, for phrases from the same 109-phrase list the spam word checker uses, for marketing markers (%, $, free, offer, sale), ALL-CAPS words, Title Case, exclamation marks, emoji, a fake "Re:" on a first email, and for a line with no merge field or no reason to open. A is 90 or more, F is under 60. The rewrites strip what cost points and keep your own words.
The idea lists use the trade names 67Leads carries and the offer angles from the cold email template generator. The angle counts are live from the warehouse.
Subject lines by trade
Tree service companiesRoofing contractorsHVAC contractorsInsulation contractorsPlumbersDentistsChiropractorsMed spasLaw firmsCleaning companiesPest control companiesElectricians
67Leads lists US local businesses by trade and city, with emails read from each company's own website and labelled verified or not. The first 67 leads are free, no card.
Get 67 leads freeQuestions
Two to six words, under about 45 characters, lower case, specific to the business, and free of ad words like free, offer or limited time. 'question about {{company}}' beats 'Grow Your Business Today!!!'.
No, and no tool can. Apple's Mail Privacy Protection loads messages on the user's behalf and stops senders from knowing when an email is opened, so open rates are inflated and unreliable (Apple, https://www.apple.com/newsroom/2021/06/apple-advances-its-privacy-leadership-with-ios-15-ipados-15-macos-monterey-and-watchos-8/, checked 4 Nov 2026). Judge a subject line by replies.
No. On a first email it pretends there was an earlier conversation. US law (CAN-SPAM) forbids misleading subject lines, and readers who notice stop trusting the rest.
Usually. Lower case looks like a note from a person; Title Case and capitals look like a newsletter. Keep proper names capitalized if you prefer.
Ones about the business itself: its name, its listing, a job type it does. Pick a trade above for 20 ready lines with merge fields that match the 67Leads CSV.
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Cold email spam word checkerEmail permutatorCold email template generatorSPF and DMARC checkerAll free tools
Lead lists and comparisons
All lead lists by tradeHow 67Leads compares67Leads vs Apollo