Blog — Email Deliverability Insights

Real-time email validation for clean data

The 2024 State of Email Deliverability: Why Bounce Rates Are Climbing and What to Do About It

Our analysis of 14 million validation requests across Q1 2024 shows average bounce rates jumped from 3.2% to 5.1% compared to the prior year. Harsh Patel, Head of Data Science at VeriMail, breaks down the three primary culprits—disposable email proliferation, stricter MX record enforcement from Gmail and Outlook, and stale CRM records—and shares a step-by-step remediation playbook that reduced bounce rates by 68% for a 200K-subscriber e-commerce client.

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How to Integrate VeriMail's REST API in Under 30 Minutes

A hands-on walkthrough for developers: setting up your API key, making your first `POST /v2/validate` call, parsing the JSON response fields (deliverability, disposable, role-based, free email), and handling rate limits gracefully. Includes code snippets in Python, Node.js, and cURL.

CAN-SPAM, CASL, and GDPR: A Marketer's Compliance Checklist

Navigating email regulations across the U.S., Canada, and the EU doesn't have to be overwhelming. Legal advisor Priya Okonkwo distills the requirements into a 12-point checklist covering opt-in language, unsubscribe mechanics, physical mailing addresses, and record-retention policies that keep your campaigns on the right side of the law.

Reducing Hard Bounces by Cleaning Your List Before Every Campaign

Sending to stale addresses is the fastest way to tank your sender reputation. Learn how to batch-validate subscriber lists using VeriMail's bulk endpoint, segment results by deliverability score, and automate list suppression workflows so your next send hits inboxes—not blackhole folders.

SPF, DKIM, and DMARC Explained: Authentication Records That Actually Matter

If your SPF record is missing or your DMARC policy is set to `none`, ISPs are silently dropping your emails. DNS engineer Marcus Chen walks through how to generate correct TXT records for each protocol, verify alignment with tools like MXToolbox, and move confidently from `p=none` to `p=quarantine` without disrupting legitimate mail flow.

Why Role-Based Emails Are Hurting Your Engagement Metrics

Addresses like `info@`, `support@`, and `admin@` inflate your subscriber counts but never convert. We analyzed engagement data from 47 clients and found role-based addresses produce 0.3% open rates versus 28.6% for personal inboxes. Discover how to filter them at ingestion and re-allocate that send volume for measurable ROI.

Building a Real-Time Validation Flow with VeriMail's Webhook Callbacks

For high-throughput sign-up forms, synchronous API calls can add latency. This guide shows how to offload validation to VeriMail's async queue, receive webhook payloads at your configured endpoint, and update your CRM within seconds—keeping your signup funnel snappy while maintaining 99.4% accuracy.

Browse by Category

Email Hygiene

Strategies for list cleaning, bounce prevention, disposable email detection, and maintaining a healthy sender reputation across your entire subscriber lifecycle.

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Compliance & Spam Laws

Practical guidance on CAN-SPAM, CASL, GDPR, and CCPA requirements for email marketers, including consent management, unsubscribe handling, and audit readiness.

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API & Integration

Developer-focused tutorials covering REST endpoints, authentication, rate limits, webhook configuration, SDK usage, and bulk validation workflows.

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Deliverability

Deep dives into inbox placement, SPF/DKIM/DMARC configuration, warm-up strategies, ISP feedback loops, and monitoring tools to keep your emails out of spam.

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