Backstroke Sandbox • Paste Your Body
Paste Your Body
Paste your body and we'll return subject line copy so good it'll make the hair on the back of your neck stand up 👅
1Show us your body
Paste the body copy of your next promotional email into the form below
2Sit tight for 24 hours
Give us about one day to review your body and prepare for the big moment
3Choose your favorite
Review three AI-generated subject lines, pick your favorite, and copy/paste it into your campaign.
More Tools in the Sandbox:
Free AI Email Tools from Backstroke
Use our free AI tools to write, analyze, and optimize your way to email, text, and push heroics. See what other toys we have in the box — just try to keep the sand out of your pants.
Subject Line Generator
Plug in your campaign type and kick your sandals off while SLG writes predicted-to-perform copy before eyes.
Trends Lite
What emoji was trending last week? Which subject lines were overused in your industry? Find this and more in a free version of our enterprise trends product.
Paste Your Body
Drop in your body copy and let Paste Your Body draft the perfect subject line and preheader combo. Don't let the name fool you, this free tool is no joke.
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