Guides, tutorials, and insights on email validation, deliverability, and API integration.
Gmail permanently rejects emails from non-compliant senders since Nov 2025. Here's what SDRs and outreach teams need to do to stay in the inbox.
Gmail, Yahoo, and Microsoft now reject emails failing DMARC. Here's what changed, what developers need to configure, and how to test your setup.
Klaviyo charges per active profile. Invalid emails inflate your bill without generating revenue. Here's how to audit your list and cut costs immediately.
We ran 10,000 Apollo.io contacts through email validation. 22% were undeliverable. Here's the full breakdown by industry, title, and domain type.
Build automated email validation workflows in n8n. Validate on form submit, clean lists on schedule, and route results to your CRM without code.
Protect your WooCommerce membership site from fake signups and failed renewal emails with real-time email validation at registration and checkout.
Role-based emails like info@, sales@, and support@ tank cold email reply rates. Here's the data on why, and how to filter them before your next sequence.
Validate emails on WordPress forms without bloated plugins. Use lightweight JavaScript and API calls to catch fake signups and protect your list.
B2B email lists lose 2-3% of valid addresses monthly. Calculate your list's decay rate and build a re-verification schedule that keeps bounces under 2%.
Invalid emails in your Shopify store cost more than bounces. They inflate ESP bills, poison deliverability, and hide real customer data from your reports.
Go beyond Laravel's email rule with API-powered validation. Fluent rules, custom middleware, and async verification for production Laravel 11 apps.
Set up Smartlead for maximum deliverability by validating your list before the first sequence. Step-by-step workflow with real bounce rate benchmarks.
Clean your Mailchimp list before each selling season. Step-by-step guide for Shopify stores to cut costs, boost deliverability, and recover revenue.
Django's EmailField only checks syntax. Add real email validation to your Django app with API-powered MX, SMTP, and deliverability checks.
Email warm-up builds sender reputation gradually while validation removes bad addresses. Here's when each matters and why you need both.
Learn webhook patterns for async email validation: retry logic, HMAC verification, and queue-based architectures in Node.js and Rails
Fix bounced cart abandonment emails and recover lost revenue. Learn why recovery emails fail, the exact dollar impact, and how real-time validation stops it.
Post-mortem on a burned sender domain: real costs, recovery timeline, and the prevention checklist that stops it from happening again.
Benchmark data comparing MX-only vs full SMTP email verification: latency, accuracy, and hybrid architecture patterns for production systems.
A practical SDR decision framework for handling catch-all domains in cold email. Test batches, risk scoring, and platform-specific workflows.