• views: 94
• date: 11 September 2026
• posted by: voska89

Diagnose why email lands in spam: SPF, DKIM, DMARC, RUA reports, IP vs domain reputation, bounce codes, Gmail & Yahoo

What you'll learn

⚡ Tell delivery, inbox placement, and engagement apart — and see why "100% delivered" can still mean almost nobody saw the email.
⚡ Check SPF, DKIM, and DMARC the way a mailbox provider does, and catch the silent failures that quietly break authentication.
⚡ Walk a real DMARC (RUA) aggregate report end to end with free tools, and move to p=reject safely without blocking your own mail.
⚡ Make the dedicated-vs-shared IP call with a real framework, and know what's tracked at the domain level versus the IP level.
⚡ Launch a new sending domain without the mistakes that get you blocklisted in week one: domain age, no website, no warmup, DNS gaps.
⚡ Run an ESP or domain migration without silently breaking DKIM alignment or throwing away years of sender reputation.
⚡ Read raw bounce codes and SMTP logs instead of a "bounced" label, and find the real cause behind a complaint-rate spike.
⚡ Meet Gmail and Yahoo bulk-sender rules — and know which requirements are actually enforced and which are soft.
⚡ Verify where your mail really lands with your own seed-list test instead of trusting one tool's score.
⚡ Build a weekly monitoring routine with Google Postmaster Tools, SNDS, and other free tools.

Requirements

❗ You already send real email to real recipients (your product, company, or clients) — this is not a beginner "intro to email" course.
❗ A basic idea of what SPF, DKIM, and DMARC are; the course teaches how they break, not what the acronyms stand for.
❗ Access to your domain's DNS settings and to your ESP / sending platform's analytics.
❗ A free Google Postmaster Tools account — ideally set up before you start.
❗ No paid software required: every tool used is free or has a free tier.

Description

Most deliverability courses are checklists written by marketers. This one is a diagnostic course: it teaches you to find out why your email isn't reaching the inbox, the way someone does it when a company's mail has stopped arriving and there's a deadline. It is not a beginner course. You already send real volume, you have read the SPF, DKIM and DMARC basics, and you still can't answer questions like: why did my complaint rate spike last week, and was it even real complaints? Is this bounce about my content, my reputation, or a DNS change from three months ago? Do I actually need a dedicated IP? I just migrated ESPs and my numbers tanked, now what? Generic deliverability content stops exactly where your real problems start. By the end of this course you will be able to tell delivery, inbox placement and engagement apart and name which of four levers a problem lives in; check SPF, DKIM and DMARC the way a mailbox provider does and catch the silent alignment failures; read a real DMARC (RUA) aggregate report end to end with free tools and move to p=reject without blocking your own mail; make the dedicated-vs-shared IP call with a real framework; launch a new sending domain or run an ESP or domain migration without the mistakes that get you blocklisted or break DKIM alignment; read raw bounce codes and SMTP logs instead of a "bounced" label and find the real cause behind a spike; meet Gmail and Yahoo bulk-sender requirements and know which ones are actually enforced; and verify inbox placement with your own seed-list test while running a weekly monitoring routine with Google Postmaster Tools, SNDS and other free tools. The course includes a bonus module of four real, fully anonymized troubleshooting cases walked end to end, a downloadable SMTP bounce-code reference, and self-check questions for every lesson. It is about 65 minutes of focused video with no padding, and every tool used is free or has a free tier.

Who this course is for

⭐ Email, CRM, and lifecycle marketers whose campaigns land in spam or the Promotions tab.
⭐ Owners and operators of sending programs in SaaS, e-commerce, and media doing tens of thousands of emails a month or more.
⭐ Developers and DevOps responsible for transactional email and domain authentication.
⭐ Freelancers and agencies who need a repeatable deliverability diagnostic process for clients.
⭐ Not for people brand new to email marketing who have never sent a campaign.

Homepage

https://www.udemy.com/course/deliverability-diagnostics-get-your-email-to-the-inbox

   
   
   

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