The End of Old-School Email Verification
Every email that lands in spam is lost revenue. Allegrow protects your sender reputation from hidden threats legacy validators can’t detect to ensure your most important messages get seen.
Designed for corporate filters and catch-all servers
Legacy verifiers were built for B2C lists and can't handle the realities of B2B contact data — like secure gateways blocking verification and complex catch-all servers hiding which contacts are real. Our system was designed from the ground up for B2B networks, giving us the unique ability to find valid contacts where others simply give up.
Unmask Spam Traps
We find and neutralize the toxic email addresses that won't produce bounces but will still hurt your deliverability.
Solve Corporate Catch-Alls
We give you a definitive 'Safe' or 'invalid' verdict on individual emails at catch-all domains, a feature most B2C-focused tools lack.
Expose Engagement Traps
These unmonitored inboxes won't bounce, but their lack of engagement tells providers your emails are unwanted, suppressing all future campaign performance.
Get unlimited risk analysis for one flat, predictable price
To see real results, you need to verify contacts at scale and keep your lists constantly clean. The legacy credit model makes this impossible, punishing you for large lists and good habits. We killed the credit so you can finally adopt a strategy that works: verify every contact, as often as needed, to achieve and maintain peak deliverability.
Predictable Flat-Rate
No per-email fees, no surprise bills. Just one predictable price for all email verification that's easy to budget for.
Clean Lists Constantly
Since 30% of data decays annually, our plan incentivizes the constant re-verification needed to stay safe.
Cover Your Whole Database
Analyze every contact, not just the ones you can have credits left for, ensuring you always have clean contacts.
Automatically fix emails that trigger spam filters
The email Safety Net™ runs risk analysis on every contact you’re going to email. When an email to a high-risk contact is detected – we automatically advise the best next step to reach your objective. This means you’re emailing the safest contacts, prospecting through the optimal channel to engage each account and generating more leads.
API-First for Modern Workflows
Integrate our deliverability intelligence into any system. Our flexible API is built to support everything from proprietary CRMs and custom-built applications to AI Agents.
Seamless Integration
Our native integrations for Outreach, Salesloft and other outbound specific applications automatically block risky sends without your team ever changing their workflow. Setup is fast and easy, no technical knowledge needed.
Pinpoint Your Highest-Risk Senders
Integrate directly into your inbox (with OAuth) to monitor your team's spam rates in real-time, acting as an early warning system. Spot and correct risky sending behaviour before they can damage deliverability to your entire team.
Frequently Asked Questions
Isn't this just another email verifier?
No. Verifiers see if an email can receive messages. We tell you if it's safe to send. They see if an email exists; we see if it's a known spam trap or a habitual spam reporter that will get your domain blacklisted.
With the new Google & Yahoo rules, is basic verification enough?
Absolutely not. The new rules are about your ongoing sender reputation, not just one-time validation.
Allegrow is built for this reality. We continuously monitor your domain health and spam placement, ensuring you stay compliant and protected long-term, so you never have to worry about a sudden shutdown.
How do you handle "catch-all" emails? Do you send emails to test them?
Under no circumstances. We never send emails to verify a catch-all address. That method is risky, outdated, and often gives you false confidence.
Instead of guessing or scraping online sources like basic tools, Allegrow uses a proprietary, signal-based system to analyze each individual contact on a catch-all domain. This tells you which specific emails are safe to send to and which are engagement dead zones or hidden risks. You stop gambling on 30% of your list and start having conversations.
What exactly happens after I request my free trial?
You get immediate access to the Allegrow platform for 14 days. Right away, you can upload your first list of up to 1,000 contacts and start seeing the hidden spam traps and risky catch-alls in your data.
To set you up for success, one of our deliverability specialists will contact you and schedule a strategy session, helping you get the most value and insight from your trial.
See the Hidden Threats in Your Data
Stop wondering if your email list is actually safe. Get a free 14-day trial with Allegrow and get a definitive answer on your deliverability health.