Nerdy Joe and Koldify reviews
This is Nerdy Joe's own page. It collects a selection of real client reviews from Clutch, DesignRush, Google and G2, plus testimonials published by Koldify, the done-for-you cold email agency where David Tile is a partner. Every quote links to the original, and the ratings below are each platform's current overall score, including the low ones.
Ratings on each platform
As shown on each platform on October 17, 2026. Click through to read every review.
Koldify client testimonials
Published by Koldify on koldify.io. These are Koldify clients.
“Working with Koldify has been a game-changer for my agency. In just 30 days, we got 56 qualified leads, 2 of which have already closed. Their hands-off system is efficient, and I highly recommend them for any business looking to boost their lead flow!”
“Great work guys. Got the 130th lead in my inbox in just 51 days when you were supposed to get them in 90 days lol.”
“Took us from $0 to $15,000 per month in 87 days. Their strategies, data sources, and copywriting skills are really good. They booked us meetings with giant companies like Sapphire, Neemans, and Mivi.”
Nerdy Joe client reviews
A selection of reviews from independent review platforms.
“I was impressed with the sheer volume and power with which they ran their campaigns. We're talking thousands and thousands of sends per month.”
“They speak with our prospects with immense professionalism and genuine product knowledge, ensuring that every interaction left a fantastic, high-end impression of our agency.”
“Their absolute commitment to doing manual, deeply researched outreach was impressive.”
“We got multiple interests from Enterprise clients in B2B businesses.”
“Delivered 10 qualified leads to me as promised. As a result - I found few very strong potential clients with ongoing contracts”
“Their messaging was human, sharp, and on-brand—no cookie-cutter templates.”
“They tailored their lead generation strategies precisely to my business needs.”
“Overall, the team's availability, competency, and kindness have been hallmarks of their work.”
“Overall, Nerdy Joe has been a reliable and efficient partner, and I couldnt be more satisfied with their performance.”
“During the first day of working with Nerdy Joe, we immediately got three meetings.”
“Nerdy Joe outperformed our internal center and significantly boosted sales as we scaled back up after Covid.”
“Nerdy Joe is punctual and responsive, with great strategy and staffing availability.”
“Thanks to Nerdy Joe, we were able to increase lead generation by 50% within the first month.”
“They constantly amaze us with their higher-quality leads and conversions. Their systematic approach and meticulousness transformed our growth.”
“Their cold calling and email campaigns were well-targeted, personalized, and effective. We quickly saw a rise in engagement and booked meetings with high-quality leads.”
“Nerdy Joe did an excellent job with our cold calling and cold email outreach.”
“They were able to get people interested and set up meetings in our calendar.”
Critical reviews
Not every engagement went well. These reviews are from 2023 and 2024, and you can read them in full on Clutch along with every other review.
“Nothing was ever delivered by them.”
“30 days with them and not a single lead. Not. One.”
Want to see if Koldify fits your pipeline?
Book a 30-minute intro call with David. No pressure, and you will leave with a clear view of whether cold email makes sense for you.