Draft, test and ship a campaign from your own verified domain — with A/B auto-winners, honest reporting, and a review gate that refuses to send anything broken.
Send competing subject lines to a slice of your audience, hold the result for a set window, then let Deckle send the winner to everyone else — no manual math, no watching the dashboard.
Opens and clicks are counted over distinct recipients and capped at 100% — so a curious inbox that fires the pixel five times still counts as one. No inflated rates, no vanity math.
Every campaign runs the same way whether you send it this second or queue it for Tuesday at 9am. Send yourself a test to your own inbox before a single subscriber sees it.
Every campaign lands with deliverability, engagement and an advisory Insights read — so you know what went out, who leaned in, and what to fix next time.
Delivered, bounced and failed counted per recipient — with hard bounces and complaints auto-suppressed from SNS so your list stays clean on its own.
Opens and clicks over distinct recipients, capped at 100%, plus the top-clicked links and opt-outs — and a per-variant split for every A/B arm.
An advisory spam-score from 0 to 100 and a deliverability checklist — flags for missing text, bare links and heavy images before they cost you the inbox.
Deckle runs a pre-flight on every campaign and blocks the send until it passes. When it does, you don't tap a button — you slide to send, so no big drop goes out by accident.
Free to start, no credit card. Send from your verified domain.