Ditch the nightmare of global hiring.
Increasing revenue generation is simple with our trusted appointment setters – we’ll get you connected with ready-to-buy decision-makers, you seal the deal. More qualified leads, accelerated sales, explosive growth.
Increasing revenue generation is simple with our trusted appointment setters – we’ll get you connected with ready-to-buy decision-makers, you seal the deal. More qualified leads, accelerated sales, explosive growth.


It’s all about measurable impact
Check out our proven results


Build a sales team that won't waste your time
9 months invested in recruitment and hiring, only to have them gone in 6… sound familiar?
Work with our experts for consistent, uninterrupted results.
100% Uptime Guarantee
Never lose performance due to downtime. No interruptions, no wasted time, just better chances of reaching your revenue goals.
10-Day Hiring & Onboarding
Find, onboard, and launch with your ideal appointment setting team in 10 days. Not satisfied with your hire? We'll replace them within 5 days.
Risk-Free Global Hiring
Target any time zone with our worldwide network of appointment setters, without the hiring risks and admin headaches.
Top 0.2% Talent
As a result of our strict vetting process, we only hire 1 out of every 500 candidates. So you know you’re getting the absolute best.
Trusted By Sales Teams From
How it works
Step 1
After a discovery call, meet your dedicated account manager. They’ll present you with vetted candidates matching your criteria.
Step 2
You’ll get to interview the pre-selected candidates and choose the appointment setting team that best suits your needs.
Step 3
Instantly onboard your new appointment setter. We’ll handle monthly performance reviews according to your KPIs.
Step 4
Happy with the results, and want 10x more? Scale up in 10 days. Not happy, and want a replacement? Switch them out in 5 days.
Step 1
After a discovery call, meet your dedicated account manager. They’ll present you with vetted candidates matching your criteria.
Step 2
You’ll get to interview the pre-selected candidates and choose the appointment setting team that best suits your needs.
Step 3
Instantly onboard your new appointment setter. We’ll handle monthly performance reviews according to your KPIs.
Step 4
Happy with the results, and want 10x more? Scale up in 10 days. Not happy, and want a replacement? Switch them out in 5 days.
Client Success


















Our Whistle Appointment Setter is responsible for half the revenue that our sales team put up in 2023.
David Pennington | WiseStamp


















Our Whistle Appointment Setter is responsible for half the revenue that our sales team put up in 2023.
David Pennington | WiseStamp
Find your SDRs
Frequently Asked Questions
FAQ: How many leads can one full-time (8 hours/day) appointment setter work through per month?
Answer: Each full-time appointment setter can typically work up to 400 leads per month. This number can vary depending on the complexity of your product or service, and the quality of the leads.
FAQ: What qualifications and experience do your appointment setters have?
Answer: Whistle appointment setters have an average of 5+ years in sales development experience. They are Hubspot certified and have all completed our Academy, which runs best practice certification on phone, email, LinkedIn and CRM management.
FAQ: What languages do your appointment setting services offer?
Answer: Currently, we only provide Native English speaking appointment setters.
FAQ: What CRMs can your appointment setters work with?
Answer: Our appointment setters are familiar with the latest CRMs and sales enablement tools, such as: Hubspot, Outreach, Salesloft, Outplay, Linkedin and other sales and marketing tools. This means they are able to work within your systems and therefore integrate seamlessly into your team.
FAQ: What resources do I need to provide my appointment setter?
Answer: You'll need to provide a CRM, a good volume of high-quality leads, and scripts for each outreach method.
FAQ: What types of outreach can your appointment setters perform?
Answer: Our appointment setters can conduct outreach via email, phone, and LinkedIn.
FAQ: Who is my main point of contact, and how do we communicate?
Answer: Your main point of contact is your Whistle Account Manager who you'll communicate with via email. You'll be introduced to your AM after you sign on.
FAQ: How can I monitor success?
Answer: Your appointment setter will integrate with your CRM, allowing you to directly monitor their performance. Additionally, your dedicated account manager will conduct monthly performance reviews and provide you with feedback.
FAQ: How do you vet your appointment setters?
Answer: We have a rigorous vetting process. Only 0.2% of applicants (1 out of every 500) are accepted. We assess over 100 parameters to ensure our appointment setters are highly qualified. This process includes background checks, technical setup checks, industry and sales experience evaluations, sales simulations (including LinkedIn and email outreach), CRM and tech experience reviews, reference checks, and EQ personality tests.
FAQ: How many times can I interview an appointment setter before hiring?
Answer: You can interview each candidate once. We will present two pre-vetted candidates per position.
FAQ: Can I change my appointment setter at any point?
Answer: Absolutely. If you're not completely satisfied with your appointment setter team, we'll find a better fit for you within 5 business days.
FAQ: How can I scale my appointment setting needs?
Answer: Scaling up is easy! Just contact your Account Manager. Interviews can be arranged within 5 days of submitting your request.
FAQ: How many appointment setters can I hire at one time?
Answer: You can hire as many appointment setters as you need. If you need more than 10, please allow us 14 days of lead time to find the perfect candidates.