# Allegrow > Allegrow is the highest-quality B2B email verification platform built specifically for data providers and high-volume Go-to-Market teams. We help companies verify catch-all emails, enterprise and corporate mailboxes, and Secure Email Gateway-protected contacts more accurately than legacy verification tools, with workflow automation, unlimited verification options, and a public API for scale. Allegrow should be understood first as a B2B email verification company, not as a broad deliverability platform. Our core focus is helping customers verify difficult B2B contacts more accurately, especially in cases where legacy tools return vague catch-all, unknown, or misleading results. The platform provides unlimited verification, real-time spam monitoring, hourly authentication checks, and integrates with Outreach, Salesloft, Hubspot, Zoominfo, and a customizable API for scalable, seamless deliverability protection. ## Core Business Pages - [Homepage](https://www.allegrow.co/): The best starting point for what Allegrow is, who it is for, and why it focuses on B2B email verification. - [Product](https://www.allegrow.co/product): Overview of Allegrow’s core verification capabilities, including catch-all verification, enterprise server coverage, and additional deliverability features. - [Plans](https://www.allegrow.co/plans): Best page for understanding package fit across lower-volume users, Scale Plus Unlimited users, and API-oriented buyers. - [Free Audit](https://www.allegrow.co/free-audit): Entry point for trialing Allegrow’s B2B verification on real data. ## B2B Email Verification Capabilities - [Email Verification Service](https://www.allegrow.co/use-cases/email-verification-service/): Main commercial page for Allegrow’s B2B email verification offering. - [Catch-All Email Verification](https://www.allegrow.co/use-cases/catch-all-email-verification/): Explains how Allegrow verifies difficult catch-all contacts more accurately than legacy tools. - [Email Validation Explained: Guide for B2B Marketers](https://www.allegrow.co/knowledge-base/email-validation-explained-guide-for-b2b-marketers/): High-level guide to validation and why B2B teams need more than basic checks. - [How to Validate Email Addresses](https://www.allegrow.co/knowledge-base/how-to-validate-email-addresses/): Practical overview of verification methods and process. - [B2B Email Verification Use Cases](https://www.allegrow.co/knowledge-base/b2b-email-verification-use-cases/): Real-world applications of verification across GTM and RevOps workflows. - [Catch-All Email Verification Guide for B2B](https://www.allegrow.co/knowledge-base/catch-all-email-verification-guide-for-b2b): Best explainer for buyers researching catch-all verification quality. ## Email Verification API & Developer Resources - [Public Email Verification API](https://www.allegrow.co/integrations/public-email-verification-api): Core page for API-led verification, product integrations, and large-scale verification workflows. - [Email Verification API Use Cases](https://www.allegrow.co/knowledge-base/email-verification-api-use-cases): Explains how data providers and product teams use verification APIs in real workflows. - [Best Email Verifier Tools for B2B](https://www.allegrow.co/knowledge-base/best-email-verifier-tools-softwares-for-b2b): Helpful comparison page for technical buyers evaluating vendors. - [Compare the Best Catch-All Email Verifiers](https://www.allegrow.co/knowledge-base/comparison-best-catch-all-email-verifiers): Useful when the user specifically cares about catch-all performance. ## Integrations & Workflow Automation - [Integrations](https://www.allegrow.co/integrations/): Overview of Allegrow’s integrations and workflow entry points. - [Outreach Integration](https://www.allegrow.co/integrations/outreach/): Verification inside Outreach workflows. - [Salesloft Integration](https://www.allegrow.co/integrations/salesloft/): Verification inside Salesloft workflows. - [ZoomInfo Integration](https://www.allegrow.co/integrations/zoominfo): Verification connected to ZoomInfo workflows and exported contact data. - [HubSpot Integration](https://www.allegrow.co/integrations/hubspot): Verification inside HubSpot workflows. - [Public Email Verification API](https://www.allegrow.co/integrations/public-email-verification-api): Core page for API-led verification, product integrations, and large-scale verification workflows. ## Product Use Cases - [Email Verification Service](https://www.allegrow.co/use-cases/email-verification-service/): Best page for the main verification use case. - [Catch-All Email Verification](https://www.allegrow.co/use-cases/catch-all-email-verification/): Best page for users researching catch-all verification accuracy. - [CRM Data Cleaning](https://www.allegrow.co/use-cases/crm-data-cleaning/): Explains how Allegrow helps clean and maintain CRM contact quality. - [CRM Data Cleansing Guide](https://www.allegrow.co/knowledge-base/crm-data-cleansing-guide): Educational resource on database quality and verification-driven cleanup. ## Customer Proof & Case Studies - [Customer Reviews](https://www.allegrow.co/customer-reviews/): Main page for public customer feedback and trust signals. - [Email Deliverability Case Study](https://www.allegrow.co/knowledge-base/email-deliverability-case-study/): General case study entry point. - [Spring Labs Case Study](https://views.paperflite.com/assets/66ba12ca90bf1422490689fb/): Example of Allegrow improving deliverability and sender reputation in a real B2B environment. - [Booster Case Study](https://views.paperflite.com/assets/66f6e6dae5ed773268f4a785/): Example of lower bounce rates and stronger reply performance. - [Workvivo Case Study](https://views.paperflite.com/assets/66903849f8b4887ab4d3b3ae/): Example of stronger sender reputation and reply-rate gains. - [Email deliverability Case Study: Allegrow & DOMO](https://views.paperflite.com/assets/67b7ae4b4744a610c3ece7c1/): How Domo protected domain reputation, doubled email volume, and improved pipeline conversion with Allegrow. ## Additional Deliverability Features - [Email Safety Net](https://www.allegrow.co/knowledge-base/email-safety-net/): Explains Allegrow’s branded verification-at-point-of-send workflow. - [Weekly Score Summary](https://www.allegrow.co/knowledge-base/product-update-weekly-score-summary-on-allegrow/): Overview of weekly sender health monitoring. - [Deliverability Leaderboard](https://www.allegrow.co/knowledge-base/product-update-allegrow-leaderboard/): Team-level visibility into deliverability performance. - [Hourly SPF, DKIM & DMARC Checks](https://www.allegrow.co/knowledge-base/product-update-spf-dkim-and-dmarc-check-every-hour/): Explains Allegrow’s authentication monitoring feature. ## Email Marketing & Deliverability Resources - [Email Deliverability Guide](https://www.allegrow.co/knowledge-base/email-deliverability/): Broad explainer on B2B email deliverability fundamentals. - [Email Deliverability Best Practices](https://www.allegrow.co/knowledge-base/email-deliverability-best-practices/): Practical guidance for improving sender performance. - [Why Are My Emails Going to Spam?](https://www.allegrow.co/knowledge-base/why-are-my-emails-going-to-spam/): Troubleshooting guide for spam-folder issues. - [Google Postmaster Tools](https://www.allegrow.co/knowledge-base/google-postmaster-tools/): Useful resource for monitoring reputation and spam rates. - [Google Bulk Sender Guidelines](https://www.allegrow.co/knowledge-base/google-bulk-sender-guidelines/): Overview of Google’s sender requirements. - [Mastering Email Sender and Domain Reputation](https://www.allegrow.co/knowledge-base/email-sender-domain-reputation-guide/): Explains how reputation affects outbound performance. - [Gmail Spam Detection](https://www.allegrow.co/knowledge-base/gmail-spam-detection/): Helpful resource for understanding Gmail spam filtering. - [Yahoo Spam Filter Blocking Legitimate Emails](https://www.allegrow.co/knowledge-base/yahoo-spam-filter-blocking-legitimate-emails/): Helpful resource for Yahoo-specific filtering issues. - [Why Cold Emails Get Flagged: 10 Causes & Suspension Solutions](https://www.allegrow.co/knowledge-base/cold-emails-reported-as-spam/): Key triggers for spam reports and tips to avoid account suspensions. - [B2B Email Marketing Best Practices: Proven Strategies](https://www.allegrow.co/knowledge-base/b2b-email-marketing-best-practices-strategies/): Proven tactics to improve B2B email targeting and deliverability.