Cold-email personalization API

Cold emails that actually mention what they read this morning.

API that hyper-personalizes your cold-email pitches using LinkedIn signals + recent posts + funding events. Drop-in to your existing sending stack — bring your own SMTP.

Get an API key →View on GitHub →

What it does

Built for one job. Done in seconds.

One context-aware call

POST a prospect's name + company + a recent signal. Get back a 60-90 word email body that references it specifically.

Bring your own SMTP

We don't send mail. We generate the body. Use Smartlead, Instantly, Lemlist, your own postfix — your deliverability stack stays yours.

Tone enforcement

No 'hope this finds you well.' No 'I'd love to hop on a quick call.' We strip the stale phrases before output.

Pay per call

$99/mo for 1k calls. $499/mo for 10k. No seat licenses, no minimums, cancel anytime.

API

One endpoint. Bearer token. Done.

POST https://openclawapi.vercel.app/v1/coldmail/run

curl -X POST https://openclawapi.vercel.app/v1/coldmail/run \
  -H 'Authorization: Bearer ock_...' \
  -H 'Content-Type: application/json' \
  -d '{
    "recipient_name": "Sarah Chen",
    "recipient_company": "Acme Robotics",
    "context": "Just announced Series A; scaling QA",
    "offer": "30-min walkthrough of how we cut test runtime 4x",
    "sender_company": "FastTest"
  }'

Pricing