Email deliverability insights, guides, and best practices from the InboxEagle team.https://www.inboxeagle.com/en-ushttps://www.inboxeagle.com/blog/gmail-deliverability-benchmark-ecommerce/https://www.inboxeagle.com/blog/gmail-deliverability-benchmark-ecommerce/InboxEagle monitored 721,351 emails to Gmail in Q1 2026. Here are the real gmail deliverability benchmarks — spam rates, tab placement, and what separates healthy programs from at-risk ones.Wed, 01 Apr 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/ecommerce-email-deliverability-gap/https://www.inboxeagle.com/blog/ecommerce-email-deliverability-gap/InboxEagle analyzed 3,474 ecommerce sender domains and found a 72-point inbox placement gap between the best and worst performers. Here's the ecommerce email performance benchmark — and what separates top-quartile brands from everyone else.Mon, 30 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/sale-subject-lines-deliverability/https://www.inboxeagle.com/blog/sale-subject-lines-deliverability/Sale language doesn't automatically hurt deliverability — but some patterns do. InboxEagle analyzed 721,351 emails and found results that flip conventional wisdom on its head.Mon, 30 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/bimi-common-mark-certificate-2025/https://www.inboxeagle.com/blog/bimi-common-mark-certificate-2025/Google launched a Common Mark Certificate option for BIMI in 2025 — no trademark required. Here's how BIMI works, what's changed, and whether it's worth implementing for your email program.Fri, 27 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/microsoft-outlook-bulk-sender-requirements-2025/https://www.inboxeagle.com/blog/microsoft-outlook-bulk-sender-requirements-2025/Microsoft began enforcing bulk sender requirements for Outlook, Hotmail, and Live.com on May 5, 2025. Non-compliant mail gets a 550 5.7.515 rejection. Here's exactly what's required and how to comply.Fri, 27 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/ecommerce-email-deliverability-benchmarks-2026/https://www.inboxeagle.com/blog/ecommerce-email-deliverability-benchmarks-2026/InboxEagle analyzed 721,351 ecommerce emails in Q1 2026. Here's where they landed — Primary, Promotions, and Spam — and what the data means for your sending program.Thu, 26 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/inbox-vs-promotions-vs-spam/https://www.inboxeagle.com/blog/inbox-vs-promotions-vs-spam/Most senders track delivered vs. spam. But Gmail has a third folder — the Promotions tab — that quietly buries marketing emails just as effectively. Here's what determines where your email lands, and how to see all three outcomes before you send.Wed, 25 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/email-deliverability-checklist-2025/https://www.inboxeagle.com/blog/email-deliverability-checklist-2025/A complete pre-send checklist covering authentication, sender reputation, list hygiene, content, and monitoring — updated for 2026 enforcement requirements.Sat, 21 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/email-spam-filter-how-it-works/https://www.inboxeagle.com/blog/email-spam-filter-how-it-works/A technical but accessible explanation of how Gmail, Outlook, and Yahoo decide whether your email reaches the inbox or the spam folder.Sat, 21 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/how-ai-monitors-email-deliverability/https://www.inboxeagle.com/blog/how-ai-monitors-email-deliverability/AI-powered deliverability monitoring alerts you in under 1 minute, identifies root causes, and generates action plans — here's exactly how it works differently from traditional dashboards.Sat, 21 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/inbox-placement-rate-benchmark/https://www.inboxeagle.com/blog/inbox-placement-rate-benchmark/Industry benchmarks for inbox placement rates across eCommerce, SaaS, and B2B — and what to do if yours falls short.Sat, 21 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/inbox-placement-rate-explained/https://www.inboxeagle.com/blog/inbox-placement-rate-explained/Your ESP says 99% delivered. But how much of that mail actually reached the inbox? The difference between delivery rate and inbox placement rate — and why it matters enormously for revenue.Sat, 21 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/why-open-rate-is-misleading/https://www.inboxeagle.com/blog/why-open-rate-is-misleading/Apple Mail Privacy Protection and security scanner pre-fetching have made open rate an unreliable metric. Here's what's happening, why high open rates can be a warning sign, and what to measure instead.Sun, 15 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/welcome-series-deliverability/https://www.inboxeagle.com/blog/welcome-series-deliverability/Open rates look great in week one — but your domain reputation may already be tanking. Here's what's really happening inside your welcome series and how to fix it.Sat, 14 Mar 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/win-back-campaign-strategy/https://www.inboxeagle.com/blog/win-back-campaign-strategy/Most win-back campaigns are run wrong — mailing too many inactive subscribers, skipping seed tests, and never actually sunsetting non-responders. Here's how to do it correctly.Sat, 28 Feb 2026 00:00:00 GMThttps://www.inboxeagle.com/blog/ecommerce-email-reputation/https://www.inboxeagle.com/blog/ecommerce-email-reputation/How to protect your inbox placement during Black Friday, product launches, and other high-volume sending events.Tue, 18 Mar 2025 00:00:00 GMThttps://www.inboxeagle.com/blog/google-postmaster-tools-guide/https://www.inboxeagle.com/blog/google-postmaster-tools-guide/How to set up Google Postmaster Tools v2, understand the new Compliance Dashboard, and what replaced the retired reputation scores.Wed, 05 Mar 2025 00:00:00 GMThttps://www.inboxeagle.com/blog/klaviyo-inbox-placement/https://www.inboxeagle.com/blog/klaviyo-inbox-placement/Step-by-step troubleshooting for Klaviyo users struggling with spam placement, low open rates, and sender reputation issues.Thu, 20 Feb 2025 00:00:00 GMThttps://www.inboxeagle.com/blog/spf-dkim-dmarc-explained/https://www.inboxeagle.com/blog/spf-dkim-dmarc-explained/A plain-English breakdown of the three email authentication standards every sender needs — plus who enforces them and what comes next.Mon, 03 Feb 2025 00:00:00 GMThttps://www.inboxeagle.com/blog/email-deliverability-guide-2025/https://www.inboxeagle.com/blog/email-deliverability-guide-2025/Everything you need to know about landing in the inbox — from authentication to reputation management, updated for 2026 enforcement changes.Wed, 15 Jan 2025 00:00:00 GMT