AI personalisation,then sent at volume.
AI writes a real line for every lead into a HotHawk custom variable. Then HotHawk merges it and sends at volume across warmed, rotated mailboxes. Bespoke copy and 40,000 a day and more, from the same place.
No credit card required.
The outbound teams running AI on HotHawk
The basics
What is AI personalisation in cold email?
AI personalisation means using AI to write a genuinely different email for each lead, not dropping a first name into one template. The AI researches a real detail per person, a funding round, a recent hire, a launch, and writes a line about it.
In HotHawk that line goes into a custom variable. HotHawk merges it into the email and sends at volume across your warmed and rotated mailboxes, 40,000 a day and more. So the two things that usually pull against each other, bespoke copy and real volume, come from the same tool. The AI writes it. HotHawk sends it.
What it does
A different email for every lead.
The AI writes the personalised line. HotHawk merges it, sends it at volume, and keeps your deliverability healthy underneath.
A real line per lead, not a merge tag.
AI researches one concrete detail per lead, their funding round, a recent hire, a product launch, and writes it into a HotHawk custom variable. The email reads like you wrote it for that person, because a sentence in it was. This is miles past dropping {{first_name}} into a template.
Personalisation that survives the send.
A thousand different openers is only useful if a thousand emails go out clean. HotHawk merges each variable, rotates the send across your warmed mailboxes, and pushes 40,000 a day and more. Personalisation and volume stop fighting each other.
Catch the weak ones before they send.
When the research is thin, AI guesses, and a bad guess reads worse than no line at all. Have HotHawk flag the leads where the data was missing so you fix those by hand, and let the strong ones through. You send confident, not hopeful.
Personalise the follow-ups too.
When a lead replies, HotHawk's AI labels it in the Master Inbox, and your AI can draft an answer that picks up the exact thread rather than firing a generic bump. The personalisation carries through the whole conversation, right past the first email.
Try it
See it in action
What you get
What you get
Bespoke at volume.
Ten thousand emails that each read like one, sent at 40,000 a day and more across warmed, rotated mailboxes.
You check the guesses.
AI flags the thin ones so you fix them by hand. The strong openers send, the weak ones never embarrass you.
Any model, one field.
Claude over MCP or your own agent over REST writes into the same custom variable. Swap the model, keep the setup.
AI personalisation FAQs
What is AI personalisation in cold email?
It means using AI to write a genuinely different email for each lead, not swapping a name into one template. The AI researches a real detail per person, a funding round, a recent hire, a launch, and writes a line about it. In HotHawk that line goes into a custom variable, gets merged into the email, and sends at volume across your warmed mailboxes. Every lead gets copy that was actually written for them.
How is this different from mail merge?
Mail merge fills in fields you already have, like a first name or company. AI personalisation writes new copy per lead from research the AI does at send time. One is a fill-in-the-blank. The other is a sentence that did not exist until the AI wrote it for that specific person.
Is this an AI SDR?
No. An AI SDR is sold as a hands-off agent that runs outbound for you. HotHawk is the execution layer it runs on. The AI writes the personalised copy, you approve it, and HotHawk sends it across warmed and rotated mailboxes. You keep control of what goes out.
Does personalising with AI hurt deliverability?
No. Genuinely varied copy tends to look more human than a hard template, and HotHawk keeps the protections on regardless: sending rotates across your mailboxes, warmup runs on real Google and Microsoft inboxes, and open and link tracking stay off for everyone. The AI writes, HotHawk keeps the sending healthy.
Do I need to write code?
No. Connect the native MCP server and Claude writes into your custom variables in plain language. If you would rather build your own thing, the REST API lets your own agent write to the exact same fields.
Run it from Claude
Have Claude research each lead and write the personalised line straight into HotHawk, all in a chat.
Cold email with ClaudeBuild with the API
Write personalised copy into HotHawk custom variables from your own agent over REST, with Bearer auth.
Read the API docsSend cold emails that get delivered. Never miss a positive reply.
Serious deliverability paired with the best reply management in the market.
No credit card required.