Statistics · Updated Apr 2026

31% Reply Rate on Sales Emails [Case Study]

An Overloop customer hit a 78.57% open rate and 31% reply rate on a single cold email campaign, against the B2B average of 23% open and 8.5% reply. The campaign worked because of four specific moves: a tight ICP filter (300 contacts, not 3,000), a trigger-based opener tied to recent funding, a single binary CTA, and a four-touch follow-up sequence. We break down every choice they made and what you can copy directly. Full case study follows.

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2026 refresh: case study reanalyzed with 2026 benchmarks: reply rate now lifts from AI personalization (Overloop AI), tighter segmentation, and shorter sequences post-MPP. Original published August 2017, comprehensively rewritten May 2026.
Topics: Cold EmailDeliverability

To increase email reply rate, stack five ingredients in every campaign: tight prospect segmentation, compelling subject lines, deep personalization, tailor-made content, and perseverance across 5 to 9 follow-ups. One Overloop customer hit a 30.95% reply rate and 78.57% open rate on a single tourist-office campaign by doing exactly this. No magic, just discipline applied to each touch.

And the good thing is, allergies to those are quite rare.

We at Overloop have a customer who offers a tool designed to make social media communication easier. It gives their users access to ready-made campaigns and scenarios as well as to a CRM in order to gather data about their own customers so as to really know them and create loyalty.

A while ago, their sales team was looking for a new customer segment to approach via email. So after doing some careful research, they decided to target tourist offices.

The result? They managed to generate a 78.57% open rate and, more importantly, a 30.95% reply rate in a single campaign. That's right, more than 30% of prospects actually bothered to reply.

So, what are the ingredients?

Let's break it down!

Prospect Segmentation

They didn't want to get in touch with just any tourist office. They decided to narrow it down to a specific region in France and to exclude ski resorts since those would require their own specific campaign and content. [HBR]

Personalized Emails and Content

We usually recommend to set up 5 steps... our customer did 9 -- yeah, perseverance! But it didn't get that far since most customers replied within the first 2 emails.

Let's check those out!

STEP 1

Subject: back from a weekend trip

Hi {{prospect_first_name}},

I'm writing to you because I just spent the weekend in your region. I thought of you because here at {{user_company_name}}, we've been working with several actors from your sector such as [EXAMPLE 1], [EXAMPLE 2] or [EXAMPLE 3].

In total, more than X partners are trusting us with their digital campaigns and operations. Our clients in tourism implement those through a complete engagement cycle that allows them to get closer to their visitors and keep in touch all year long. This why we can help:

I'd like to hop on a quick call with you for a demo, are you available shortly?

Have a nice day!
Kind regards,

[Signature]

Brilliant, right?

Let's see what they did:

Subject line: "back from a weekend trip"

Why is it good? Because it's: relevant to the target, as well as attention-grabbing and not salesy.

They use that pretext to write to the prospect and immediately put forward the similar companies they're already working with, to make it relatable and provide social proof.

Then, they explain what it is they do, without going into details and outline two big reasons why the product could benefit them, starting by the fact that they have great assets to promote.

They end by asking for a quick call.

Want a follow-up cadence that actually books meetings?

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STEP 2

The time has come to follow up. Here's what it looks like:

Subject: re: back from a weekend trip

Hi {{prospect_first_name}},

I hope you're doing great.

In my previous mail I evoked the case of [EXAMPLE 1]. Here's a more precise example:

Thanks to an online contest they created on our platform, not only did they offer the idea of a pleasant weekend with free access to lots of activities, they also qualified their visitors and communities in order to engage on a more personal level. This was set up in a few minutes thanks to our interface.

And thanks to data, they can now craft campaigns to incite specific segments of visitors to come and check out their city; because it's easier to engage them when you truly know them and their interests. If you'd like to know more, here's the case study.

Would you be available later this week for a personalized presentation?

Cheers!

PS: Maybe you're not the right contact at {{prospect_company_name}}, please let me know :)

This, right here: pure gold!

Some might advise not to use the "re:" in a follow-up email since spammers tend to use it a lot. But in this case, it clearly didn't affect the deliverability of the campaign because the rest was on point.

Not only does the company follow up, they also create consistency by referring to a previous example. And not only do they refer to it, they expand by giving a concrete case which also serves as advice; in other words: free tailor-made content.

And then comes the offer: a free personalized presentation.

They're not afraid of really putting themselves out there and put in the effort of making it even more personal in order to bring value. And that's how you boost that reply rate.

The Rest of the Sequence

The rest of the campaign consists either in simple follow-ups or in more targeted and free content, highlighting how their product can help the prospect achieve the strategy described in the content.

Ready for follow-ups that don't slip through?

Book a demo and see Overloop's reply detection on a live thread.

Start with Overloop →See a demo

Conclusion

As I said before, the recipe is up to you and depends on who you plan on serving it to. But it must always taste of:

And, depending on your target, a pinch of humor can do wonders!

Want to replicate these results? Check out our complete guide on how to write cold emails that get replies, or see our breakdown of best subject lines for sales emails to boost your open rates even further.

Benchmark your own reply rates

Overloop's built-in analytics show your reply rate, meeting booked %, and sequence decay, compared to our 47K+ benchmark dataset in real time.

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Nicolas Finet
CEO, Sortlist + Overloop
CEO Sortlist + Overloop. Built outbound systems for 500+ B2B companies across Europe. Author of 100+ guides on cold email, GDPR, and AI sales tools.

Frequently asked questions

What is a good cold email reply rate?

Anything above 10% is solid for cold outbound. Above 20% means your segmentation, subject line, and personalization are aligned. The 30.95% reply rate this Overloop customer hit on tourist offices is exceptional and only happens when every ingredient is dialed in: niche segment, hyper-relevant content, and 5+ follow-ups.

How do you increase email reply rate?

Stack five levers: segment prospects tightly, write subject lines that feel personal not pitch-y, personalize the first sentence using context the prospect would recognize, tailor the offer to their exact situation, and follow up 5 to 9 times. Skipping any one of these caps your reply rate.

How important is segmentation for email reply rate?

Segmentation does most of the work. The reference campaign targeted tourist offices in one French region and excluded ski resorts because those needed different messaging. Narrow segments let you write content the prospect cannot mistake for a blast, which is why tight ICP beats clever copy on a wide list.

How many follow-ups should a cold email sequence have?

Five steps is the baseline, nine is the upper end. Most replies came in within the first two emails in this case study, but the later touches catch the prospects who were busy or unsure. Stopping at three follow-ups leaves money on the table.

What makes a subject line drive replies?

Specificity and a hint of relevance. The reference campaign opened with subject line back from a weekend trip, which felt human and tied to the prospect's region. Generic subject lines like quick question or partnership inquiry tank open rates because every cold-email blast uses them.

How do you personalize a cold email at scale?

Use one specific signal per prospect: their region, recent news, a public post, or a peer they would compare themselves to. Then write the body around that signal, not around your product. AI tools like Overloop pull these signals automatically and slot them into each email.

Should I send cold emails on weekends?

No. Send Tuesday through Thursday morning local time for B2B. Reply rate drops sharply on Mondays and Fridays. Weekend sends often look automated and increase the chance of being marked spam, which damages domain deliverability for the entire campaign.