Emailyy
Free browser-based email tools for signatures, subject lines, and HTML previews.
What is Emailyy?
Emailyy provides a collection of completely free, browser-based tools designed to help users create, check, format, and test email content without requiring any account or subscription. The platform offers utilities such as an HTML email signature generator, a subject line tester, an HTML email previewer, a word counter, and an email header analyzer.
Designed for anyone working with personal, professional, or business emails, the tools run directly in modern web browsers on desktop computers, tablets, and mobile phones. Users can quickly generate signatures, check subject line lengths, preview HTML code, count words and sentences, and inspect email headers without installing software or connecting an email account.
Emailyy focuses on simplicity and accessibility, allowing users to solve specific email tasks instantly. By eliminating paywalls, subscriptions, and signups, the platform offers a straightforward solution for everyday email work and technical email analysis.
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FounderPlaybooks.
What other founders did to grow.
2722 dispatches from hundreds of founders, pulled from the week's best podcasts.
We use the App Store custom product URLs and we actually measure how many leads we get from YouTube versus... a different URL for Instagram, for YouTube, for Facebook, for our website, and then we can see and attribute revenue directly to that.
Custom App Store product URLs finally unlocked per-channel revenue attribution
After eight years of mostly-unattributed content, the recent unlock was App Store Custom Product Pages with channel-specific URLs — finally producing per-channel revenue attribution. Most subscription apps doing content marketing are still flying blind here; this is a low-effort instrumentation win that retroactively justifies (or kills) channels.
I upgraded my onboarding from 5 minutes to 15 minutes. And generally the longer you're onboarding as long as it's adding value and telling a story the better. I immediately saw my organic conversion rate more than 3x organically without paid ads.
Extend onboarding from 5 to 15 minutes to triple organic conversion rate
Matt's first paid ads attempt failed because his onboarding was too thin — users weren't converting from download to trial. By rebuilding onboarding into a value-rich, story-driven experience that took 15 minutes, he tripled his conversion rate without touching spend. The longer flow earned trust and context before asking for payment, which also unlocked viable paid acquisition economics.
There's a play for whatever you're stuck on.
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