A Feature by Allegrow
The Definitive Solution for Catch-All Email Verification
Tired of vague "unknown" and "catch-all" results from legacy email validation tools? Allegrow provides the definitive 'Safe' or 'Unsafe' verdicts required to power your outbound with certainty.
The Modern Standard for Catch-All Email Verifiers
While legacy tools only check the server, our modern approach verifies for risk in each individual catch-all address. Here's how this makes all the difference.
Get Actionable Catch-all Statuses
No more vague 'unknown' or 'accept-all' results. Our system provides a clear, actionable 'Safe' or 'Unsafe' verdict on every catch-all address.
Surface Modern Threats
Our proprietary, signals-based system checks for 30+ risk factors, surfacing the hidden spam traps and habitual spam reporters behind catch-all addresses that legacy tools are blind to.
Unlimited Email Validations
Our unlimited plans incentivize good data hygiene. Re-verify your entire list as often as you need to without worrying about expiring credits or monthly limits.
Automated Protection
Our 'Safety Net' natively integrates with Salesloft, Outreach, HubSpot, and Close CRM to automatically prevent risky emails before they're ever sent, right within your existing workflow.
Prevent Data Decay
Our signals-based approach often catches dead emails and contact changes before they're announced on platforms like LinkedIn, putting you ahead of competitors who rely on unreliable sources.
Ensure Every 'Safe' Email Lands
Verification is just the start. Our full deliverability suite helps you A/B test your content, monitor your sender reputation, and track KPIs to ensure every 'Safe' email actually lands.
Trusted by the Numbers
The numbers below reflect our commitment to providing a reliable, scalable, and trusted email solution for B2B revenue teams.
See the Hidden Threats in your Catch-all Email Lists
Start your free 14-day trial to analyze up to 1,000 contacts. Get the definitive 'Safe' or 'Unsafe' verdicts that legacy tools can't provide. No credit card required.
Powering the World's Top B2B Revenue Teams
Join thousands of B2B users who have stopped guessing on catch-alls and now engage their lists with total confidence.
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The Challenge of the Catch-All Server
Validating a catch-all email is difficult because the server is intentionally configured to catch all mail, meaning it will accept mail for any address at that domain, whether it exists or not. This makes traditional validation methods unreliable.
For High-Performance Outbound Teams
The SDR's Dilemma: The Two Bad Choices
Your sales team has a new list, but 30% is flagged as 'unknown' catch-alls. They're now forced into an impossible choice: risk your domain reputation by emailing them, or delete thousands of potential leads.
The Winning Move: Email With Certainty
Allegrow removes the gamble. By providing a definitive 'Safe' or 'Unsafe' verdict, we empower your team to confidently engage every viable lead. This turns your catch-all domains from a dangerous mystery into a powerful asset.
Real Results from B2B Outbound Teams
Don't just take our word for it. See the real-world impact of getting definitive verdicts on your catch-all emails.
" Our bounce rate dropped by 52% in Q2 this year and dropped by a further 26% in Q3, which is great. ... When we look overall, too, at just our reply rates, our click rates, our open rates—they've all increased. "
Lindsay Minnema
Sales Enablement Specialist at Booster
" With Outreach campaigns, we’ve seen our reply rates increase by 200–300% using Allegrow to optimize inbox placement. Over the same period of this improvement, we’ve also seen higher engagement rates overall. "
Richard Mullins
Head of Global Business Development at Workvivo
" The biggest issue we had was that employees who were even emailing current clients were still landing in the spam folder. ... Before, we had a lot of worries about our Head of Sales being able to reach prospects, but that’s changed. "
Alexander Kogan
Director of Finance at Spring Labs
FAQs on how to verify catch-all emails
What is a catch-all email address?
A catch-all email address is a feature where a mail server is configured to accept all emails sent to any address at that domain, even if the specific mailbox doesn't exist. This is often used to avoid losing potentially important messages.
Why are catch-all emails a problem for B2B sales teams?
Catch-all domains are a major risk because they hide the threats (like spam traps and dead emails) that can get your domain blacklisted. This forces sales teams into a dilemma: email and risk your sender reputation, or skip potentially valuable leads.
How is this different from a standard email verifier?
Standard verifiers use a single, outdated method—an SMTP check—that is fundamentally blind to catch-all servers. Allegrow uses a modern, proprietary, signals-based approach. We analyze dozens of risk factors to provide definitive verdicts.
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, Allegrow uses advanced signals and data analysis.
How can I see if my list has hidden risks?
The best way is to see the proof for yourself. You can start a free 14-day trial of our platform and analyze up to 1,000 of your own contacts. It takes less than 2 minutes to get started.
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 addresses in your list.
Ready to See What's Really in Your List?
Start your free 14-day trial now. See for yourself why our B2B-specific, signals-based approach is the modern standard, and unlocks the definitive 'Safe' or 'Unsafe' verdicts that legacy tools can't provide.