AI Subject Line Workshop

Paste your best-performing subject lines. Select targeting angles. Get variations of your existing lines across every angle, plus net new lines inspired by your voice — not generic AI output. A/B test pairs surfaced automatically. Free, no login required.

Your best-performing subject lines (one per line, 3–10)

Select targeting angles (0 selected)

Campaign context (optional — product, audience, goal)

Add your existing subject lines and select at least one angle to continue.