Warm calling vs cold calling, and why warm calls connect twice as often

Your rep dials 50 prospects cold today. Most hang up before the second sentence. Now picture the same rep calling someone who accepted their LinkedIn invite yesterday. Same script, same voice, completely different reception. In lemlist’s own data, calls that follow a LinkedIn accept connect at 21.4%, while cold first-touch calls connect at 9.6%.

That gap comes down to one thing: recognition. A prospect who already saw your name picks up differently than one who’s never heard of you. This is what warm calling means, and it’s the difference between a call that feels like an interruption and one that feels expected.

In this article, I’ll show you exactly how warm calls outperform cold calls, with the numbers to back it up. You’ll get a step-by-step workflow for warming up a prospect before you ever dial, plus a full sequence you can copy into your own outreach. I’ll also be straight with you about when cold calling still makes sense, because it does, just not as often as most reps assume.

By the end, you’ll know how to turn your call list from a wall of strangers into a list of people who already know your name.

What is warm calling?

Warm calling means picking up the phone to call a prospect who already had some interaction with you. That interaction could be a LinkedIn connection accept, an email reply, a few email opens, an event conversation, or an inbound form fill.

The key difference is recognition. When the prospect sees your name or hears your intro, something clicks. They’ve seen you before. That changes the entire dynamic of the conversation.

Here’s how warm calls and cold calls compare side by side:

If you want a deeper look at the fundamentals of calling prospects without prior contact, check out what cold calling actually involves.

Warm calls vs cold calls in numbers

We looked at 1.9M calls and 412.6M messages in lemlist between October 2025 and November 2026. The data is clear: the more familiar a prospect is with you before the call, the more likely they are to pick up.

That’s more than double the connect rate when you lead with LinkedIn before dialing.

But connect rate is only half the story. Among the prospects who did pick up, 11.8% of warm call pickups led to an interested lead, compared to 3.9% for cold first-touch calls. So warm calls don’t just connect more often. They convert better once connected.

Source: lemlist internal data.

For more benchmarks on what to expect from outbound calls, see cold calling statistics.

Why warm calls work better

Three things happen when a prospect already knows your name.

Recognition lowers the guard. The first five seconds of any call decide whether the prospect stays or hangs up. When they recognize your name or company from a LinkedIn notification or an email subject line, you get past that initial filter. You’re not a stranger. You’re someone they’ve seen before.

You have context for your opener. Instead of starting with a generic pitch, you can reference something real. “I saw you accepted my connect on LinkedIn” or “You opened the email I sent about X.” That gives the prospect a reason to keep listening, and it gives you a natural bridge into your reason for calling. If you want more ideas for what to say in those first seconds, here are cold call opening lines that actually work.

The prospect already showed some level of interest. Accepting a LinkedIn invite or opening an email twice is a small signal, but it’s a signal. It means they didn’t ignore you. That baseline curiosity makes the conversation easier to start and easier to steer toward a next step.

How to warm up a call before you dial

1. Start with LinkedIn

Visit the prospect’s profile first. Then send a connection invite without a note. A blank invite feels casual and gets accepted more often than one with a sales pitch attached.

This does two things: it puts your face and title in front of the prospect, and it creates a trackable event. If they accept, you know they’ve seen you. That’s your green light to call.

If you want to build a full workflow around this, here’s how to combine LinkedIn and email outreach in one sequence.

2. Send a short email

One email. One reason to talk. Keep it under five sentences.

The goal here is not to close a deal over email. It’s to get your name into the prospect’s inbox so that when you call, they’ve seen it twice: once on LinkedIn, once in email. That repetition matters.

If the prospect opens the email, even better. You now have a behavioral signal you can act on. If you’re weighing whether to lead with a call or an email, here’s a breakdown of cold email vs cold call to help you decide.

3. Call only the leads who engaged

This is where most reps skip a step. They send the LinkedIn invite and the email, then call everyone on the list regardless of what happened.

Don’t do that. Set a condition: call only after the prospect accepted your LinkedIn invite or opened your email at least twice. Those are the leads who gave you a signal. Everyone else stays in the email and LinkedIn sequence for now.

In lemlist, you can set conditions between steps so that the call step only triggers when a specific engagement event happens. That way your reps spend their phone time on the warmest leads, not the entire list.

4. Reference the touch in your opener

When you dial, your first sentence should connect back to the previous interaction. Keep it simple.

• •

  “Hey {{firstName}}, we connected on LinkedIn earlier this week. I wanted to put a voice to the name.”

• •

  “Hi {{firstName}}, I sent you a short email about [topic] a couple days ago. Figured a quick call would be easier than going back and forth.”

That’s it. No long preamble. Reference the touch, then give your reason for calling in one sentence. The prospect already has context, so you don’t need to build it from scratch.

A warm calling sequence you can copy

Here’s a six-step sequence that warms up every call. You can build this directly in lemlist using conditions between steps and call steps inside your multichannel campaign.

A few things to notice about this sequence.

The call on Day 4 only happens if the prospect engaged. That’s the condition that turns this from a generic sequence into a warm calling workflow. In lemlist, you set this as a branching condition so the call step fires only when the right signal is present.

The follow-up email on Day 4 catches the prospects who didn’t pick up. It references the missed call and keeps the thread alive.

The LinkedIn voice note on Day 7 adds a personal touch that text can’t match. It also uses a channel the prospect already opted into by accepting your invite.

For more templates like this, including branching logic and advanced conditions, check out these multichannel outreach templates.

When cold calls still make sense

I’d be dishonest if I said you should never cold call. There are real situations where warming up the call first isn’t practical.

New markets where you have no brand recognition. If you’re entering a new geography or vertical and your LinkedIn profile means nothing to the prospect, a cold call might be your fastest path to a conversation. You won’t have the luxury of recognition, so lean on relevance instead.

Prospects with no LinkedIn presence. Some industries and some roles just aren’t active on LinkedIn. If your buyer doesn’t check LinkedIn or email regularly, calling without a prior touch might be your only option.

Event and conference follow-ups where speed matters. You met someone at a booth or scanned a badge. The “warmth” here is the event itself, but you might not have time to run a full sequence before the moment passes. Pick up the phone.

For these situations, persistence matters more than warmth. Most cold calls require multiple attempts before you connect. Here’s a data-backed look at how many times to call a prospect before moving on. And for general technique, these cold calling tips will help you make the most of every dial.

Final takeaway

The difference between a warm call and a cold call is one or two touches that happen before you dial. A LinkedIn visit, a short email, a connection accept. That’s all it takes to more than double your connect rate and triple the odds of reaching an interested lead.

The workflow is simple: start on LinkedIn, send one email, watch for engagement signals, and call only the prospects who showed up. Reference the prior touch in your opener, and you’re in a real conversation instead of an interruption.

You don’t need to overhaul your process. You just need to add a layer of intent before every call. Build your first signal-based sequence in lemlist.