Justin

🎥 Full video walkthrough → youtu.be/iVmk92yIzHw 📊 Blog post with 7-factor breakdown → toolstack.tech/blog/email-sub… 📧 Build your email list → aweber.com/easy-email.htm…

70% of emails never get opened. Not because the offer is bad. Because the subject line is.Most people write subject lines blind. This free tool scores yours across 7 factors in real time — spam triggers, length, power words, everything. toolstack.tech/tools/email-su…

@mrtbrgl hi

Full guide + free tool 👇 toolstack.tech/blog/word-coun… Build your email list while you create: aweber.com/easy-email.htm… Check if your content ranks in AI search: advertsgpt.com

Most writers count words. The ones who rank check readability. 🎯 Flesch 60–70 = the sweet spot 📏 1,500–2,500 words wins in SEO ✅ 500 focused > 2,000 padded ⏱️ 1,000 words = 4 min read Check yours free 👇 toolstack.tech/tools/word-cou…

If you sell on Whatnot, you need to know your exact margins before you go live. I built a free Whatnot Seller Fee Calculator to do the math for you. ✅ Enter your sale price ✅ See your exact fees & profit ✅ 100% free, no logins Try it out here 👇

The internet is broken. Paywalls, forced signups, and 30s ads for simple tools. So I built an arsenal of 57+ developer & marketer utilities. ✅ 0 Ads ✅ 0 Paywalls ✅ 100% Client-side I’m giving it away for free: toolstack.tech What tool should I build next? 👇

I tried to format a JSON file last month. 5 sites asked me to sign up first. So I built a free alternative. Then I built 56 more. No signup. No ads. No paywalls. toolstack.tech

A dev on Reddit said they're forced to use sketchy, ad-filled sites to decode JWTs at work. They didn't realize I already built the solution. 🔒 I built a 100% secure, client-side JWT Decoder. Your tokens never leave the browser. Free here: toolstack.tech/tools/jwt-deco…

Stop guessing your Expected Value on box breaks. 📉 I built a visual math tracker that calculates your true EV and strips out hidden eBay/Whatnot fees. 100% free. No signups. Try it: toolstack.tech/tools?category… #sportscards #pokemontcg #thehobby