Upload your lead list. Get back researched, hyper-personalized openers and 3-touch sequences your sequencer can send today.
Free to start, no credit card. Exports to Smartlead, Instantly, Lemlist & Apollo.
Hi Jordan — saw Acme just closed your Series A and you're hiring two SDRs. Usually that means outbound volume is about to jump before the new reps fully ramp.
We help teams in exactly that window send personalized openers at volume without burning a week on manual research. Worth a look before the new reps start?
Name, company, a LinkedIn or website. That's it.
Recent posts, company news, hiring, tech stack — multi-signal, not a template.
Personalized first lines and full 3-touch follow-ups.
One click to Smartlead, Instantly, Lemlist or Apollo.
Paste a prospect's LinkedIn or company URL and watch Warmline write a researched opener — free.
Every opener leads with one true, specific detail — the thing you'd have found yourself if you had the time.
Hi Jordan — saw Acme just closed your Series A and you're hiring two SDRs. Usually that means outbound volume is about to jump before the new reps fully ramp.
We help teams in exactly that window send personalized openers at volume without burning a week on manual research. Worth a look before the new reps start?
Hi Jordan — saw Acme just closed your Series A and you're hiring two SDRs. Usually that means outbound volume is about to jump before the new reps fully ramp.
We help teams in exactly that window send personalized openers at volume without burning a week on manual research. Worth a look before the new reps start?
Pick a plan and start free — you only pay when it's working.
“I stopped dreading outbound. I upload the list and the openers actually reference something real about each prospect.”
“It reads like I spent 20 minutes on each prospect's LinkedIn — except I didn't touch a thing.”
“We were priced out of Clay for the smaller clients. This hits the quality bar without the tables-and-credits headache.”
“Finally an AI line-writer that doesn't sound like an AI line-writer. The openers feel human.”
“List in, sequences out, straight into Instantly. It fits the way we already work instead of replacing it.”
“The research angle is the difference. It picks the one detail worth opening with, every time.”
Clay is a powerful, complex data platform — tables, waterfalls, credits, a learning curve. Warmline does one thing: researched, personalized openers and sequences from your list, at a flat price, no setup marathon.
No. We research several real signals — recent posts, company news, hiring, tech stack — and write to them, so each opener references something specific and true instead of a templated mad-lib.
No — you keep your sequencer. We export clean openers and 3-touch sequences straight to Smartlead, Instantly, Lemlist or Apollo.
A CSV of leads (name, company, and a LinkedIn or website). You get researched openers back, ready to paste or export.
Your lists are yours. We use them only to research and write your campaigns — never to train shared models.
Upload a list, get researched openers back today. Free to start.
Questions, agency volume, or a vertical you want tuned research for? Drop us a line.
Warmline is built by operators who did outbound the hard way — you're talking to the team, not a ticket queue.