Learn how to improve email deliverability with step-by-step fixes for authentication, list hygiene, segmentation, complaints, and inbox placement.
Author: Pankaj Kumar
Pankaj Kumar
Pankaj Kumar is an Email Deliverability Expert and Product Leader with 13 years of experience in email deliverability, CRM, marketing analytics, deliverability onboarding, implementation, and automation. He combines deep technical expertise in email infrastructure, inbox placement, sender reputation, and authentication protocols with a product-driven approach to solving complex deliverability challenges at scale. Having worked with Zeta and Blueshift, Pankaj has helped hundreds of clients improve email performance through data-driven strategies, technical troubleshooting, and scalable automation. His focus extends beyond resolving deliverability issues to building smarter deliverability products, monitoring systems, and AI-powered solutions that help businesses proactively identify risks and improve inbox placement. Through his blog at University of Email, Pankaj shares practical insights on email deliverability, CRM strategy, marketing analytics, and emerging deliverability technologies to help email marketers and technical professionals make informed decisions and achieve better results. Connect with him on LinkedIn at https://www.linkedin.com/in/pankajkumar-deliverability
Learn how to improve email deliverability with a step-by-step guide covering authentication, list hygiene, segmentation, and inbox placement best practices.
Learn why emails go to spam and fix deliverability issues with practical steps to improve inbox placement and avoid spam filters.
Email deliverability in 2026 explained with practical steps to improve inbox placement, fix spam issues, protect sender reputation, and increase email performance.
Email not reaching inbox? Learn the 7 most common deliverability mistakes in 2026 and how to fix them to improve inbox placement, sender reputation, and campaign performance.
For years, email marketers have quietly depended on something they don’t fully control: what happens after the click. You send the email, someone clicks, lands on your site—and from there, a whole ecosystem of tracking tools takes over. Session replay tools, heatmaps, behavioral analytics… all feeding data back into your CRM, your segmentation, your next campaign. Now, that layer is under serious pressure. France’s data protection authority, CNIL, has released a draft recommendation on session replay tools and opened it for public consultation. On the surface, it’s about web tracking practices. In reality, it’s another signal that the era of…
Learn the top email deliverability challenges in 2026, including AI filtering, privacy changes, sender reputation, and inbox placement best practices.
You can have the perfect cold email—great copy, irresistible offer, and a clean list—but still land in spam but most marketers fall in a trap of email deliverability mistakes. Welcome to email deliverability in 2026. Spam filters have evolved. Mailbox providers like Google and Microsoft now rely heavily on AI-driven reputation systems, user engagement signals, and behavioral patterns. If your emails aren’t reaching the inbox, chances are you’re making one (or more) of these critical mistakes. 1. Sending From “Cold” Domains Launching campaigns from a brand-new domain without warming it up is one of the fastest ways to kill deliverability.…
Google has officially announced the retirement of Google Postmaster Tools (GPT) v1, and if you rely on it to monitor your email deliverability, reputation, and spam complaints, this update is critical. Starting September 30, 2025, the legacy Postmaster Tools v1 web interface will no longer be accessible, and all users will be redirected to the new Google Postmaster Tools v2. What’s Changing with Google Postmaster Tools Web Interface Retirement → The v1 interface will be retired on September 30, 2025. Users will be automatically redirected to the v2 dashboard. API Sunset → The current Postmaster Tools API v1 will also…