A 6-month outbound plan built from your data, at no cost.

We'll size your market, share a sample of leads, and hand you a prioritized outreach plan with projected meetings, SQLs, and ROI.

Most agencies charge for this. We'll build it with you for free.

Book your FREE Outbound Strategy Sprint

Over 350 Companies Trust Whistle

How it works

The Outbound Strategy Sprint runs across two calls

Know exactly who to target first
Get a sample of leads before you commit
Find your highest-converting lead sources
Get a robust outreach plan and ROI projection

Book your free Outbound Strategy Sprint

What you get when you book a free Outbound Strategy Sprint

Identify your real TAM

A validated TAM from our data team

We build your ICP on the first call, send it to our data team, and they come back with your market size and 10–20 verified leads.

Get your TAM estimate

Validate outbound effectiveness

An honest assessment of whether outbound is right for you

We review your TAM against our benchmarks across 350+ companies. If outbound won’t generate real ROI for your market, we’ll tell you upfront.

See if outbound works for you

Map priority lead sources

A ranked breakdown of every lead source you have

We go through inbounds, events, lookalikes, referrals, and outbound and rank each one so your SDRs start with the highest-converting sources.

Find your best lead source

Get your outbound forecast

Projected meetings, SQLs, and expected ROI from your actual data

By the end of call two, you have a GTM plan with projected meetings, SQLs, and expected ROI for the next quarter.

Calculate your outbound ROI

What Your Pipeline Could Look Like With Whistle

Real world results from companies that partnered with Whistle to generate qualified pipeline faster.

Cyber Security

Scaling Top-of-Funnel Opportunities with Tailored SDR Services

$6.4M

pipeline generated

40X

return on investment

Find Out More

Saas and AI

Converting Freemium Users to Enterprise Power-Users for Powtoon

$8M

pipeline generated

19X

return on investment

Find Out More

HR and Workforce

How Dot Compliance Scaled Global Pipeline with Whistle

$7.7M

pipeline generated

8X

return on investment

Find Out More

Trusted by Growing
Revenue Teams

They Whistled. We Gave Them Pipeline. From early-stage startups to enterprises, our clients share how Whistle changed the game.

“I chose Whistle for the quality of the people. I created a spreadsheet and ranked every candidate I interviewed, and Whistle’s SDRs ranked highest. They were more knowledgeable, more personable, and a little more experienced.”

‍

Stephan Staszewski

Head of Business Development

"Because they found the right talent, onboarding was incredibly fast, our new team members were actually delivering within less than a month. Whistle’s speed significantly increased our capacity and time-to-market. It was completely seamless, Whistle’s talent fit right in, and the speed at which it all came together was incredible."

Perry Nalevka

CEO at Penguin Strategies

"Whistle provided us with the structure and support we needed to make outbound a viable and repeatable part of our sales strategy. Their team was responsive, collaborative, and proactive in helping us test and learn what worked best for our audience."
‍

Andrea Brown

VP of Marketing

“Our Whistle team crush their goals every day, every month. They have amazing attitudes and willingness to be part of our team. Love Whistle!!!”
‍

‍

David Pennington

Sales Development Leader

“We knew the type of talent Whistle had access to, and they exceeded our expectations. Their BDR has helped us expand our pipeline and given us the bandwidth to focus on what we do best—delivering value to our clients.”
‍
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Ari Barmapov

Co-Founder & Head of Business Development

"We chose Whistle because of two things. One, the trust that our network already had in them. Secondarily, it was through the collaboration in the sales process. We felt very well understood and taken care of because we have a unique use case for the outreach. Whistle was able to be flexible, collaborative, and consultative to address our specific needs."

Will Taylor

Co-Founder & Chief Partner Officer

“It’s been an incredibly positive experience working with Whistle. The communication is open and upfront, and I especially appreciate that the Appointment Setters are proactive and confident to test and optimize the process.”
‍

Connor Conzelman

Former Director of Customer Success

"The Whistle team bring energy, professionalism, and a positive attitude to every meeting. The level of care and commitment is truly impressive. One of our Whistle SDRs was actually awarded the top opportunity contributor worldwide."
‍

Karleen Hickok

Global Director, Sales Development

"What stands out about Whistle is their flexibility—they built a very specific playbook structured exactly to our needs rather than forcing us into a one-size-fits-all framework."

‍‍‍

Sharon Dayan

VP of Marketing

"Corli is the best BDR I have ever worked with. Ever. EVER. Best stats, initiative, professionalism, calling consistency, and getting it done daily. Thank you Whistle!"
‍
‍

Tim Savage

Chief Executive Officer

"Whistle provided us with the structure and support we needed to make outbound a viable and repeatable part of our sales strategy. Their team was responsive, collaborative, and proactive in helping us test and learn what worked best for our audience."
‍

Ron Agron

VP of Marketing

"The people at Whistle are really nice, very warm, and very friendly. It felt like working with colleagues from my own company. Every meeting was just a joy to speak with everyone."
‍
‍

Donatas Gricius

Head of Marketing | RedK

"Whistle overhauled our pipeline, implemented and streamlined tools around RevOps, and built meaningful reports. This resulted in efficiency gains among the sales team, clean data for analytics, and increased visibility on our sales operations."

Jason Hill

Director of Software Engineering

"What stood out most was the flexibility and ownership. Whistle felt like part of our internal team, not just another agency. They developed the strategy, executed the outreach, optimized everything, and remained responsive throughout.”

Hagai Leeran

Director of Brand Marketing & Strategic Initiatives,

"Whistle helped us transform our sales process from a question mark into a predictable engine for growth. The clarity we gained was a powerful learning experience for our whole team and has been fundamental to our success."

Geeta Verma

Founder at LivedX

"Breaking into the American market is a formidable challenge, but partnering with Whistle made the journey seamless. Their team provided the strategic guidance we needed to navigate every complexity. From the start, they were a dedicated partner committed to ensuring our success."

Avichai Cardozo Tenenbaum

Head of Marketing

“Our inbound strategy with Whistle transformed how we engage with investors. They didn’t just help us set up meetings—they became an extension of our team, building relationships and providing invaluable feedback. The increase in qualified meetings speaks volumes about the effectiveness of their approach.”

Yoni Perry

Investor Relations Director

“The biggest thing is, Whistle helped get our time to market faster. It would have taken us two to three times as long to figure out these things without having fast access to smart people who could talk to customers.”

‍

Brent Chudoba

Chief Executive Officer

"It's been really great to work with the Whistle team. With no SDR in place, we needed a quick way to start cold-calling prospects, and Whistle was able to step in and deliver in a super quick way."
‍
‍

Yair Lehrer

VP of Marketing

"Whistle drove those outbound opportunities that enabled us to get in front of our target audience."
‍
‍
‍

Ellie Abramov

Head of Business Development

"Whistle drove those outbound opportunities that enabled us to get in front of our target audience."
‍
‍
‍

Orel Levit

Director of Sales

"Great Results and awesome team to work with. Whistle has been amazing in helping us scale our sales operations. The conversion rate of the meetings set is fantastic, and they are always available to help at any time. They are flexible and understand the unique issues of the tech world."
‍‍‍

Dana Roth

Marketing Automation Manager

"Brandon has been a dedicated and valued member of our team. Smart, hard-working, and full of heart. We’re grateful for the impact he’s had, both professionally and personally. He’s a talented remote sales professional - any team would be lucky to have him."
‍‍‍

Aaron Singer

Publisher & CEO

“What stands out for me is Whistle’s professionalism and their communication.”
‍

‍‍‍

Omer Farkash

Co-Founder & COO

“Whistle provided an out-of-the-box solution for sales development, which was exactly what we needed to get up and running quickly. Their team’s ability to pivot strategies and maintain transparency throughout the campaign made them an invaluable partner in helping us grow our business.”
‍‍‍

Jamie Schell

Chief Business Officer

"Whistle’s hands-on approach and availability have been standout features of our partnership. Their team is receptive to feedback, and their flexibility in both strategy and collaboration has been invaluable to our success."
‍
‍‍‍

Matthew Douglas

Global Head of Partnerships and Revenue

"Kirsten was a pleasure to work with, had lots of great ideas, as well as helped me to fine-tune some of the ideas I had in my mind. Everything was done in an incredibly timely fashion, and time and time again, Kirsten went above and beyond. Could not recommend more!"
‍‍‍

Elliot Smus

Director of Sales & GTM

“It’s not just outreach. It’s structured, smart, and really tailored to how our team works. That made a huge difference. Whistle’s like a revenue partner. They brought both strategy and execution and it worked.”

‍‍‍

Hayley Herlitz

Marketing Leader

"This was my first time on HubSpot, and I walked away from our time together with a well-built CRM and a strong understanding and education on how to manage it as we continue to grow and scale. The team was incredibly patient, educational, and a joy to work with."
‍‍‍

Zach Blank

Former GTM Director

"The first thing we noticed was that deadlines were consistently hit, with clear project tracking that made it easy to understand progress and provide feedback. This enabled successful execution across all areas and ultimately achieved our core goals of automating reporting and improving data hygiene across the revenue team, setting us up for scale moving forward."‍‍

Richard Nischk

CEO & Co-Founder

"Working with Whistle for our RevOps has been amazing. We came in a bit nervous for the task at hand, with a large number of specific requirements. Working with Whistle, and specifically with the amazing Sade, was an absolute pleasure. She was incredibly knowledgeable and helped us with many complicated tasks to create an extremely robust CRM system. ‍‍

Sam Rosenblatt

Business Development Manager

“It’s not just outreach. It’s structured, smart, and really tailored to how our team works. That made a huge difference. Whistle’s like a revenue partner. They brought both strategy and execution and it worked.”

‍‍‍

Efrat David

VP of Marketing

A 6-month outbound plan built from your data, at no cost.

Over 350 Companies Trust Whistle

The Outbound Strategy Sprint runs across two calls

A validated TAM from our data team

An honest assessment of whether outbound is right for you

A ranked breakdown of every lead source you have

Projected meetings, SQLs, and expected ROI from your actual data

What Your Pipeline Could Look Like With Whistle

Scaling Top-of-Funnel Opportunities with Tailored SDR Services

$6.4M

40X

Converting Freemium Users to Enterprise Power-Users for Powtoon

$8M

19X

How Dot Compliance Scaled Global Pipeline with Whistle

$7.7M

8X

Trusted by GrowingRevenue Teams

“I chose Whistle for the quality of the people. I created a spreadsheet and ranked every candidate I interviewed, and Whistle’s SDRs ranked highest. They were more knowledgeable, more personable, and a little more experienced.”‍

"Whistle provided us with the structure and support we needed to make outbound a viable and repeatable part of our sales strategy. Their team was responsive, collaborative, and proactive in helping us test and learn what worked best for our audience."‍

“Our Whistle team crush their goals every day, every month. They have amazing attitudes and willingness to be part of our team. Love Whistle!!!”‍‍

“We knew the type of talent Whistle had access to, and they exceeded our expectations. Their BDR has helped us expand our pipeline and given us the bandwidth to focus on what we do best—delivering value to our clients.”‍‍

“It’s been an incredibly positive experience working with Whistle. The communication is open and upfront, and I especially appreciate that the Appointment Setters are proactive and confident to test and optimize the process.”‍

"The Whistle team bring energy, professionalism, and a positive attitude to every meeting. The level of care and commitment is truly impressive. One of our Whistle SDRs was actually awarded the top opportunity contributor worldwide."‍

"What stands out about Whistle is their flexibility—they built a very specific playbook structured exactly to our needs rather than forcing us into a one-size-fits-all framework."‍‍‍

"Corli is the best BDR I have ever worked with. Ever. EVER. Best stats, initiative, professionalism, calling consistency, and getting it done daily. Thank you Whistle!"‍‍

"Whistle provided us with the structure and support we needed to make outbound a viable and repeatable part of our sales strategy. Their team was responsive, collaborative, and proactive in helping us test and learn what worked best for our audience."‍

"The people at Whistle are really nice, very warm, and very friendly. It felt like working with colleagues from my own company. Every meeting was just a joy to speak with everyone."‍‍

"Whistle overhauled our pipeline, implemented and streamlined tools around RevOps, and built meaningful reports. This resulted in efficiency gains among the sales team, clean data for analytics, and increased visibility on our sales operations."

"What stood out most was the flexibility and ownership. Whistle felt like part of our internal team, not just another agency. They developed the strategy, executed the outreach, optimized everything, and remained responsive throughout.”

"Whistle helped us transform our sales process from a question mark into a predictable engine for growth. The clarity we gained was a powerful learning experience for our whole team and has been fundamental to our success."

"Breaking into the American market is a formidable challenge, but partnering with Whistle made the journey seamless. Their team provided the strategic guidance we needed to navigate every complexity. From the start, they were a dedicated partner committed to ensuring our success."

“The biggest thing is, Whistle helped get our time to market faster. It would have taken us two to three times as long to figure out these things without having fast access to smart people who could talk to customers.”‍

"It's been really great to work with the Whistle team. With no SDR in place, we needed a quick way to start cold-calling prospects, and Whistle was able to step in and deliver in a super quick way."‍‍

"Whistle drove those outbound opportunities that enabled us to get in front of our target audience."‍‍‍

"Whistle drove those outbound opportunities that enabled us to get in front of our target audience."‍‍‍

"Great Results and awesome team to work with. Whistle has been amazing in helping us scale our sales operations. The conversion rate of the meetings set is fantastic, and they are always available to help at any time. They are flexible and understand the unique issues of the tech world."‍‍‍

"Brandon has been a dedicated and valued member of our team. Smart, hard-working, and full of heart. We’re grateful for the impact he’s had, both professionally and personally. He’s a talented remote sales professional - any team would be lucky to have him."‍‍‍

“What stands out for me is Whistle’s professionalism and their communication.”‍‍‍‍

"Whistle’s hands-on approach and availability have been standout features of our partnership. Their team is receptive to feedback, and their flexibility in both strategy and collaboration has been invaluable to our success."‍‍‍‍

"Kirsten was a pleasure to work with, had lots of great ideas, as well as helped me to fine-tune some of the ideas I had in my mind. Everything was done in an incredibly timely fashion, and time and time again, Kirsten went above and beyond. Could not recommend more!"‍‍‍

“It’s not just outreach. It’s structured, smart, and really tailored to how our team works. That made a huge difference. Whistle’s like a revenue partner. They brought both strategy and execution and it worked.”‍‍‍

"This was my first time on HubSpot, and I walked away from our time together with a well-built CRM and a strong understanding and education on how to manage it as we continue to grow and scale. The team was incredibly patient, educational, and a joy to work with."‍‍‍

“It’s not just outreach. It’s structured, smart, and really tailored to how our team works. That made a huge difference. Whistle’s like a revenue partner. They brought both strategy and execution and it worked.”‍‍‍

Let's Walk You Through How We Schedule 14,000 Meetings a Year

Trusted by Growing
Revenue Teams

“I chose Whistle for the quality of the people. I created a spreadsheet and ranked every candidate I interviewed, and Whistle’s SDRs ranked highest. They were more knowledgeable, more personable, and a little more experienced.”

‍

"Whistle provided us with the structure and support we needed to make outbound a viable and repeatable part of our sales strategy. Their team was responsive, collaborative, and proactive in helping us test and learn what worked best for our audience."
‍

“Our Whistle team crush their goals every day, every month. They have amazing attitudes and willingness to be part of our team. Love Whistle!!!”
‍

‍

“We knew the type of talent Whistle had access to, and they exceeded our expectations. Their BDR has helped us expand our pipeline and given us the bandwidth to focus on what we do best—delivering value to our clients.”
‍
‍

“It’s been an incredibly positive experience working with Whistle. The communication is open and upfront, and I especially appreciate that the Appointment Setters are proactive and confident to test and optimize the process.”
‍

"The Whistle team bring energy, professionalism, and a positive attitude to every meeting. The level of care and commitment is truly impressive. One of our Whistle SDRs was actually awarded the top opportunity contributor worldwide."
‍

"What stands out about Whistle is their flexibility—they built a very specific playbook structured exactly to our needs rather than forcing us into a one-size-fits-all framework."

‍‍‍

"Corli is the best BDR I have ever worked with. Ever. EVER. Best stats, initiative, professionalism, calling consistency, and getting it done daily. Thank you Whistle!"
‍
‍

"Whistle provided us with the structure and support we needed to make outbound a viable and repeatable part of our sales strategy. Their team was responsive, collaborative, and proactive in helping us test and learn what worked best for our audience."
‍

"The people at Whistle are really nice, very warm, and very friendly. It felt like working with colleagues from my own company. Every meeting was just a joy to speak with everyone."
‍
‍

“The biggest thing is, Whistle helped get our time to market faster. It would have taken us two to three times as long to figure out these things without having fast access to smart people who could talk to customers.”

‍

"It's been really great to work with the Whistle team. With no SDR in place, we needed a quick way to start cold-calling prospects, and Whistle was able to step in and deliver in a super quick way."
‍
‍

"Whistle drove those outbound opportunities that enabled us to get in front of our target audience."
‍
‍
‍

"Whistle drove those outbound opportunities that enabled us to get in front of our target audience."
‍
‍
‍

"Great Results and awesome team to work with. Whistle has been amazing in helping us scale our sales operations. The conversion rate of the meetings set is fantastic, and they are always available to help at any time. They are flexible and understand the unique issues of the tech world."
‍‍‍

"Brandon has been a dedicated and valued member of our team. Smart, hard-working, and full of heart. We’re grateful for the impact he’s had, both professionally and personally. He’s a talented remote sales professional - any team would be lucky to have him."
‍‍‍

“What stands out for me is Whistle’s professionalism and their communication.”
‍

‍‍‍

"Whistle’s hands-on approach and availability have been standout features of our partnership. Their team is receptive to feedback, and their flexibility in both strategy and collaboration has been invaluable to our success."
‍
‍‍‍

"Kirsten was a pleasure to work with, had lots of great ideas, as well as helped me to fine-tune some of the ideas I had in my mind. Everything was done in an incredibly timely fashion, and time and time again, Kirsten went above and beyond. Could not recommend more!"
‍‍‍

“It’s not just outreach. It’s structured, smart, and really tailored to how our team works. That made a huge difference. Whistle’s like a revenue partner. They brought both strategy and execution and it worked.”

‍‍‍

"This was my first time on HubSpot, and I walked away from our time together with a well-built CRM and a strong understanding and education on how to manage it as we continue to grow and scale. The team was incredibly patient, educational, and a joy to work with."
‍‍‍

“It’s not just outreach. It’s structured, smart, and really tailored to how our team works. That made a huge difference. Whistle’s like a revenue partner. They brought both strategy and execution and it worked.”

‍‍‍

Let's Walk You Through How We
Schedule 14,000 Meetings a Year