Type a subject line and get an instant score with specific, actionable feedback — length, spam triggers, caps, punctuation, personalization and curiosity — updated as you type.
Your subject line decides whether an email is opened at all. Type one below and get an instant score with specific feedback — on length, spam-trigger words, ALL-CAPS, punctuation, personalization and curiosity — recalculated as you type.
A heuristic guide, not a deliverability guarantee — the real test is your audience and your sender reputation. Want your whole email program reviewed? →
The tester scores the things that reliably affect opens and deliverability: length (does it fit, especially on mobile), spam-trigger words that hurt inbox placement, shouting ALL-CAPS and repeated punctuation, and positive signals like a personalization token, a number, or a curiosity-sparking question. It’s a heuristic guide — the real judge is your audience.
A score can’t know your audience or your sender reputation, and it can’t predict open rate (now unreliable anyway due to privacy features). Use it to avoid obvious mistakes and sharpen clarity, then A/B test subject lines with real sends to learn what your list actually responds to.
Great subject lines are wasted on a weak email program. See the complete email marketing guide, or request an invite to have your email reviewed properly.
Keep it concise (ideally under about 55 characters so it isn't cut off on mobile), lead with the key words, avoid spam-trigger words and ALL-CAPS, and give a clear reason to open. Personalization, a specific number or a curiosity gap can help — then A/B test with real sends.
Spam-trigger words (free, buy now, guarantee, winner, cash), ALL-CAPS words, multiple exclamation marks or repeated punctuation, and over-the-top claims. These can hurt deliverability and land you in the spam folder regardless of how good the email is.
Aim for roughly 30-55 characters so it displays fully in most inboxes, especially on mobile. Longer subject lines risk being truncated, so front-load the most important words.
No — it's a heuristic guide that helps you avoid common mistakes and sharpen clarity. It can't know your audience or sender reputation, and open rate itself is now unreliable due to privacy features. Always A/B test with real sends.
Tell us a little about your business and a senior strategist will send a tailored growth plan — no obligation.
We combine data, AI, and market insight to optimize every touchpoint — for maximum ROI and sustained growth.
We continuously track, analyse, and adjust campaigns in real time — turning data into instant, actionable improvements.
From market entry to scaling internationally, we help brands expand and localize with precision and efficiency.
Launching or accelerating, our agile approach lets you scale campaigns, teams, and budgets without friction.
We act as an extension of your business, collaborating closely to solve complex challenges. Whether it’s long-term innovation or short-term impact, our dedicated teams bring agility, expertise, and a results-driven approach to your most important goals.
Based on the strategy, we start working on a delivery plan and schedule, designing short- and long-term goals.
To power the relentless pursuit of growth — and redefine what’s possible for India’s enterprises.
Case studies ↗Through a team of revenue-obsessed operators who demand results over vanity — driven by transparency, ownership, and craft.
Meet the team ↗We engineer end-to-end growth through strategy, marketing, and data — measured in pipeline, not vanity metrics.
Get a proposal ↗Get a free, no-obligation growth plan from a senior strategist within 24 hours.
