Whistle is a global SDR Agency that partners with growing SAAS B2B companies to accelerate sales through Sales Development, Content Marketing and Inside Sales. We offer full transparency, the best people and processes, and are a performance-driven company.



Whistle is a global SDR Agency empowering fast-growing companies with operations, teams and strategies to unlock possibility and create opportunity.

Our Services

We offer two options for our SDR services

SDR Agency

Our fully managed SDR Agency service is completely integrated within your systems.

This service includes:

  • Your chosen number of full time SDRs
  • Management team:
    - Account Manager
    - Team leader
  • Messaging for all outreach on:
    - Phone
    - Email
    - LinkedIn
  • Operations:
    CRM Optimization and ongoing support for your SDR team
  • Data:
    500 monthly contact enrichment credits

Heard enough?

SDR For Hire

Our highly trained and experienced SDRs can be hired into existing systems to boost revenue growth and fuel headcount.

Our SDRs have:

  • 2 years+ Sales/ SDR experience
  • Hubspot Sales Certifications
  • Whistle SDR Training Academy Certifications
  • Experience in your industry

We offer:

  • Global coverage
  • 10 day SDR switch out or scale up
  • SDRs who are fluent in English, German, Spanish, French, Portuguese and more.

Heard enough?

Our Clients

We’ve run 600+ campaigns for over 50 startups and scale-ups in dozens of industries

Our Results

They speak for themselves

meetings booked by Whistle

in monthly opportunities created

meetings booked last week

Our Testimonials

Don’t believe the numbers? Here’s what our clients have to say

We’re experienced with:



Stay up to date

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Whistle’s Inbound Process

Whistle’s Inbound Process

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