Free Founder Tool
Pitch Email Subject Line Generator
Craft investor-grade subjects in seconds — boost opens without sounding spammy.
Subject lines drive investor open rates. Enter a few signals — traction, logos, geography — and we’ll spin up variants tuned for metrics, social proof, problem framing, and curiosity. Each line gets a quick deliverability grade so you can A/B test with confidence.
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Share feedbackKeep subjects specific, credible, and under 55 characters. Avoid ALL CAPS, repeated punctuation, and tired phrases.
Your subject lines will appear here
Fill the essentials on the left and hit “Generate Subjects” to spin up 10–15 investor-ready lines.
Pitch subject FAQ
Subject lines set the tone for your outreach. Here’s how to balance specificity, curiosity, and deliverability.
What’s the best length for investor subject lines?
Aim for 41–55 characters so it fits mobile inbox previews without truncation.
Should I use emojis?
Use sparingly. The generator defaults to no emoji but you can allow minimal usage if it fits your brand.
Can I personalize for a specific partner or portfolio company?
Yes. Add the firm, partner, or portfolio tie-in and the generator will weave it into relevant variants.
How do you check deliverability?
We look at length, caps, punctuation, and spammy words to grade each subject so you can avoid hard bounces.
Do you store my inputs?
No. Everything stays in your browser via local storage so you can reuse or reset anytime.
Subject line strategies that win investor attention
Lead with metrics
Share a standout KPI to signal traction instantly — ARR, growth rate, or pipeline converted in the last quarter.
Use social proof wisely
Name-drop logos or notable backers sparingly so every subject still feels personal and credible.
Tie to the investor thesis
Reference the firm, partner, or portfolio company to show you understand why the conversation matters now.
Pro tips for higher open rates
- Keep subjects between 41 and 55 characters for mobile inboxes.
- Avoid spam triggers like ALL CAPS, multiple exclamation points, or too many links in the email body.
- Personalize at least one variant with a partner or portfolio reference to test relevancy.
- Pair each subject with an aligned opener generated via our Investor Email Generator for consistency.
Founder testimonials
“Switching to data-led subject lines boosted open rates from 28% to 46% in a week.”
“The deliverability grading kept us from shipping risky phrases that hurt our last campaign.”
Use these subject lines with our Investor Email Generator and Investor Fit Finder to build a cohesive fundraising workflow.