Guides, tutorials, and insights on email validation, deliverability, and API integration.
Mailchimp free plan limits in 2026: 250 contacts, 500 sends/month. Here's how list cleaning keeps you under the cap, plus when to switch ESPs.
BIMI lets you show your brand logo in Gmail and Apple Mail. Common Mark Certificates skip the VMC trademark requirement. Here's the full setup.
Gmail caps your spam complaint rate at 0.3% but recommends 0.1%. Here's exactly how to monitor, diagnose, and fix a rising spam rate.
Klaviyo now charges for every non-suppressed profile, not just the ones you email. Here's how the billing change works and how to keep your costs down.
Microsoft enforces SPF, DKIM, and DMARC for bulk senders to Outlook.com. Here's what changed, the technical setup, and how to test compliance.
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.
Laravel email validation done right: go beyond the built-in email rule with fluent rules, custom middleware, and API-powered deliverability checks.
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 Django email validation 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.