Tell us the goal — get a clean, human-sounding email back in seconds.
Tell us what the email needs to do, who it's for, and the tone you want. We generate a 4-6 sentence draft you can paste straight into Gmail or Outlook. No filler openers, no marketing slop.
The biggest mistake we see with AI-written email is over-instruction — long, structured prompts asking for "high-converting cold outreach with three pain points and a soft CTA." That produces template-shaped marketing prose every spam filter recognises and every recipient ignores.
The opposite works. State the goal plainly, name the audience, set a human tone, and let the model write a short, direct email. We deliberately cap output to 4-6 sentences because that's what mailbox providers and humans both reward — shorter, more personal mail outperforms long blasts on every metric we've seen.
This tool is a draft engine, not a sender. Always read what comes out, edit anything that sounds off, and send from your own warmed mailbox. AI-written cold emails sent from a cold mailbox land in spam regardless of how well-written they are — that's what mailbox warmup tools fix on the other side.
You're the human deciding what gets sent. Use the draft as a starting point — edit one or two sentences so it sounds like you, not us.
Cold-outreach data from every reputable source (Outreach, Lavender, every public deliverability dataset) shows opens + replies peak at short emails. We enforce the cap in the prompt.
Gmail's filters don't classify "AI-written"; they classify "spammy patterns." Generic prose with classic spam triggers gets caught regardless of source. Specific, human-sounding prose doesn't — this tool aims for the latter.
Not in the free version. The constraint is a feature, not a limitation — we deliberately bias toward what works for cold outreach. Inside the platform, longer drafts are available via the Inbox Placement and Warmup add-ons.
A SieveGuard endpoint that routes to our AI assistant. The text you submit and the draft you receive aren't stored.
A perfectly-written email still hits spam if it's sent from a cold mailbox. SieveGuard's Mailbox Warmup add-on auto-warms your sending inboxes via partner send/reply loops so cold outreach actually lands.