What are past projects, failures, or successes you’ve had in your career?
1. Back in 2019, we built direct software as a GDPR compliant marketing automation application (same founding team). We learned about B2B contact data from an ESP perspective and realized how widespread the problem of spam traps landing emails in spam was. This application did 100s of thousands of dollars in revenue, but we saw that deliverability was the larger market opportunity.
2. In 2021, we launched Allegrow (including the neverspam app) to help emails reach the primary inbox. Working with companies of all sizes from start-ups to publicly traded companies, we know how to get emails to the primary inbox. The business is now doing over a million dollars in revenue and recently raised a fresh round of venture funding.
3. Now, in 2025, we are focusing our business on email verification that disrupts the legacy approach and gets customers better results ( specifically for B2B organizations). Being the provider that will work best with AI agents, GTM teams at scale, and data providers.
What 3rd party tools is your product critically dependent on?
n/a
Where is your customer data stored?
Amazon Web Services, Ireland / eu-west-1 region
How many customers do you have today?
100s of paying customers and thousands of users.
What’s the origin of the idea for your product?
While building a software product to automate emails, we noticed everyone had issues with cleaning B2B data to avoid spam traps and dead emails. The existing solutions in the market were not specified for B2B organizations (as their biggest customers are companies like large B2C orgs), which meant they missed the mark on a lot of contacts, like companies using catch-all servers. We’re passionate about the product because we know that when people can’t get their messages to the primary inbox: They lose sales, They miss job opportunities, and They can’t communicate with their customers effectively. We can help a lot of people and create a positive impact on their lives by making email better.
What problem is your product solving and how?
All old-school verifiers only use SMTP checks and other outdated approaches. This means for B2B contacts, between 25-50% of your results aren't verifiable (and often just state: "catch-all", "unknown" or "risky" As a result, you either throw away this very valuable chunk of your list, or email these contacts and hit spam traps, which make all your other emails less successful. Now, with Allegrow, you can actually verify which individual emails are correct on catch-all servers. Meaning you avoid spam traps and reach those prospects everyone else can’t. For you, this means more email success and a better business without throwing away cash on the old-school pay-per-credit model.
What’s the #1 thing you’re looking to gain from the AppSumo campaign?
Word-of-mouth!
What are your plans with the customers, cash, and learnings from the AppSumo campaign?
We’ll have a thriving community of deliverability experts, while reinvesting the deal proceeds in pushing the boundaries of what’s possible with email verification at scale.
Any details to clarify about the deal?
On the unlimited plan, bolt-on our fair usage terms apply (it’s not intended for data resellers), and it includes SMTP-based verification to replace the per-credit approach (if you use an existing verifier): https://www.allegrow.co/fair-use-policy
The tier one and tier two plans include catch-all verification, at the limits specified, and we do offer unlimited options for this directly on larger plans.
If you are in the business of reselling leads or data, we can work with you, but you’ll need to contact us directly (it’s not what this AppSumo deal is meant for).
Validate any catch-all email and mitigate the risk of wasted outreach
