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Just because your email list is longer than a CVS receipt doesn’t mean you’re reaching real prospects. (“So much info and none of it helps me.”)
Since legacy tools can’t identify risky emails like invalid catch-alls or spam traps, your messages are more likely to land in spam folders than actual inboxes.
If only there was a tool designed to help B2B teams clean their email lists, avoid spam traps, and boost deliverability.
Say hello to Allegrow.
TLDR;
- Validate any catch-all email and mitigate the risk of wasted outreach
- Pinpoint and avoid spam traps so you can land more emails in inboxes
At a Glance
Best for
- Marketers
- SaaS
- Sales managers
Operating system
- Windows
- macOS
- Linux
- Browser-based
- ChromeOS
Detailed Description
Allegrow is an email verification tool that ensures you reach valid contacts by identifying risky emails, including spam traps and dead addresses.
Identify emails other tools miss
With Allegrow, you can send emails that make it to real people, not spam traps, catch-all black holes, or bots.
- Leverage multiple proprietary methods to identify which emails are risky or safe for outbound emailing
- Protect your email reputation by identifying spam traps, active, and inactive addresses
- Identify which catch-all emails are valid vs invalid to surface leads most tools discard

Visualize how many emails are valid to determine how safe it is to use each list.
Designed for B2B teams
Unlike legacy filters, Allegrow is designed to work even behind enterprise-grade filters like Proofpoint and Mimecast using proprietary catch-all and multi-layer verification for B2B use cases.
- Accurately verify email addresses across enterprise mail servers at scale with a GDPR-compliant system that is SOC 2-certified
- Automatically perform multiple verification attempts and analyze response patterns inside a single platform to ensure you’re targeting real prospects, not bots

Verify email addresses on business domains, so you know where your emails are going.
Boost conversions with email verification
From marketers and growth hackers to sales reps and CRM admins, Allegrow helps clean contacts, improve deliverability, and streamline prospecting.
- Simply upload a CSV with your email list to start scanning
- Import data from any of your existing CRM, email marketing, or cold email platforms

Once you upload your entire email list, Allegrow can start scanning for spam traps and catch-all domains.
Catch issues before you hit send
Because Allegrow flags high-risk contacts that are likely to bounce or block your emails, you’ll avoid deliverability issues that hurt your outreach.
- Spot high-risk contacts before they cause damage
- Get guidance on what to pause, remove, or replace

Identify contacts likely to bounce or be blocked, so you can replace them before they hurt your outreach.
Designed for B2B teams, Allegrow lets you identify truly valid contacts, avoid spam traps, and target overlooked emails to generate more leads.
Send emails to the right inboxes.
Get lifetime access to Allegrow today!