Subject lines Free
13 SaaS cold-email subject lines
A swipe list of lowercase, specific subject lines built for SaaS first-touch outreach.
quick idea for {{Company}}'s onboarding
{{Company}} + {{YourProduct}}?
saw {{trigger}} — congrats
cutting {{metric}} at {{Company}}
a faster way to {{job to be done}}
{{peer company}} fixed this in a month
worth 10 minutes, {{FirstName}}?
the {{metric}} problem nobody talks about
re: {{Company}}'s {{recent launch}}
one question about your {{workflow}}
{{FirstName}}, thought you'd want this
helping {{Company}} keep more users
small tweak, big {{metric}} win
Why it works: SaaS buyers skim their inbox on a phone, so these stay short, lowercase, and specific — they read like a colleague’s note, not a campaign. Each one references the prospect or a concrete outcome rather than hype, which lifts open rates without tripping spam filters.
Swap in
{{trigger}}/{{recent launch}}— a real, recent event you can verify.{{metric}}— the number they care about (churn, activation, MRR).- Test 2–3 per send; kill any that underperform after ~50 sends.