Finding the best online training resources for email deliverability is crucial for anyone looking to improve their inbox placement and overall email campaign performance. The landscape of email deliverability is constantly evolving, requiring continuous learning and adaptation to new rules and best practices. While formal courses exist, many in the industry highlight the invaluable lessons learned through practical experience, active community engagement, and consistent review of authoritative blogs and documentation. This page compiles insights from marketers, deliverability experts, and official documentation to guide you through the most effective learning pathways.
Key findings
Diverse resources: There is no single 'best' resource; a combination of blogs, books, and practical experience is often recommended. For an overview of where to find these, consider our page on where to find online email deliverability training.
Practical experience: Hands-on experience, often gained through troubleshooting real-world issues, is considered paramount by many professionals.
Foundational knowledge: Understanding the basics of email sending protocols, authentication (SPF, DKIM, DMARC), and reputation is fundamental. You can learn more about these foundational concepts by exploring the Sender Score fundamentals of deliverability course.
Community engagement: Networking with peers and learning from their experiences in forums or communities is highly valued for practical insights and problem-solving strategies.
Ongoing learning: Given the dynamic nature of email deliverability, continuous learning through updated resources and industry news is essential.
Key considerations
Start with basics: Before diving into complex issues, ensure a solid understanding of email basics and common pitfalls. For essential starting points, refer to resources for learning deliverability basics.
Combine theory with practice: While courses provide theoretical knowledge, real-world application is key to internalizing concepts and developing problem-solving skills.
Leverage multiple formats: Utilize a mix of books, blogs, online courses, and community discussions to gain a well-rounded understanding.
Stay current: Regularly check industry news and updates, as deliverability best practices can change rapidly due to new ISP requirements and evolving spam tactics.
What email marketers say
Email marketers often approach deliverability training from a practical, problem-solving perspective. They frequently prioritize resources that offer actionable insights and real-world case studies over purely theoretical instruction. Many emphasize the importance of learning through experience, as each deliverability challenge presents unique lessons. Networking within the email community, participating in forums, and staying updated with leading industry blogs are also key methods for marketers to enhance their deliverability knowledge.
Key opinions
Experience is primary: Many marketers believe that direct experience, often involving troubleshooting issues, is the most effective teacher. They agree that real-world exposure helps in understanding complex deliverability issues and how to fix them.
Community learning: Networking with peers and engaging in industry discussions provides invaluable insights and helps in learning from others' successes and failures.
Blog reliance: Marketers frequently refer to established deliverability blogs for historical context, current trends, and practical advice. Some well-regarded blogs often include topics like why emails go to spam.
Practical primers: Quick primers and guides that offer foundational knowledge are seen as useful starting points, especially for new hires.
Key considerations
Hands-on problem solving: The most impactful learning often comes from diagnosing and resolving real deliverability issues, even painful ones.
Structured vs. informal learning: While formal courses exist, many marketers find informal learning through blogs, books, and peer discussions to be equally, if not more, valuable. For a deeper dive into current issues, see email deliverability issues.
Curating resources: It's important to identify and regularly follow reliable sources for deliverability news and best practices.
Comprehensive courses: For those seeking structured learning, numerous online platforms offer email marketing courses that include deliverability components, as highlighted by The CMO's best email marketing courses.
Marketer view
Email marketer from Email Geeks suggests that nobody is actively running comprehensive deliverability courses at the moment, but that might change. He recommends exploring historical archives of reputable blogs, which can provide years of valuable insights into deliverability trends and solutions. Additionally, he points to a book that covers deliverability in depth, with a recent second edition available, offering a more structured learning path.
12 Feb 2024 - Email Geeks
Marketer view
Email marketer from Email Geeks suggests checking out a book as a quick primer on the basics of email and deliverability. He indicates that such resources are ideal for those who need to grasp the foundational concepts rapidly. These primers condense essential information, making complex topics more accessible for beginners or those seeking a concise review.
12 Feb 2024 - Email Geeks
What the experts say
Email deliverability experts emphasize a blend of foundational knowledge, continuous learning from authoritative sources, and practical application. They often highlight the dynamic nature of deliverability, where staying updated on ISP changes and industry best practices is crucial. Unlike marketers who might focus on immediate fixes, experts tend to advocate for a deeper understanding of underlying technical mechanisms and long-term reputation management. This holistic approach ensures sustainable deliverability improvements.
Key opinions
Technical foundations: Experts stress the importance of understanding core email protocols like DMARC, SPF, and DKIM. Our simple guide to DMARC, SPF, and DKIM provides a good starting point.
Authoritative blogs: They frequently recommend long-standing, reputable blogs with extensive archives that delve into complex deliverability issues.
Continuous education: Given the constant evolution of email, experts highlight the necessity of ongoing learning to adapt to new challenges and solutions.
Deep dives into issues: Rather than superficial fixes, experts suggest a methodical approach to diagnosing and resolving deliverability problems, often involving in-depth analysis of bounce codes or blocklist (or blacklist) dynamics. Consider our in-depth guide to email blocklists.
Key considerations
Understanding ISP changes: Keeping abreast of major ISP (Internet Service Provider) policy updates and changes is paramount for maintaining good inbox placement. For example, understanding technical solutions from top performing senders is essential.
Leveraging expert insights: Regularly consulting established deliverability experts and their published works provides tested strategies and deeper context.
Holistic view: Deliverability is not just about avoiding spam, but also about building and maintaining a strong sender reputation across all aspects of email sending.
Referencing key resources: Foundational blogs like Word to the Wise offer timeless advice on complex deliverability topics.
Expert view
Expert from Word to the Wise suggests that achieving good deliverability is a journey, not a destination, requiring constant vigilance and adaptation to new challenges. He advises senders to understand that mailbox providers continually evolve their filtering mechanisms, meaning strategies that worked yesterday might not work tomorrow. Consistent monitoring and adjustment of sending practices are therefore essential.
10 Jan 2024 - Word to the Wise
Expert view
Expert from Spam Resource highlights the critical role of user engagement metrics in determining inbox placement. He explains that positive engagement, such as opens, clicks, and replies, signals to mailbox providers that content is valued by recipients. Conversely, high complaint rates or low engagement can significantly harm sender reputation and deliverability.
05 Feb 2024 - Spam Resource
What the documentation says
Official documentation from various ISPs, email service providers, and industry standards bodies provides the foundational technical knowledge necessary for robust email deliverability. This includes specifications for email authentication (SPF, DKIM, DMARC), guidelines for responsible sending practices, and insights into how mailbox providers evaluate incoming mail. Understanding these documented rules is paramount, as they form the bedrock of how emails are delivered and filtered across the internet.
Key findings
Authentication standards: Official documentation rigorously defines and explains the implementation of SPF, DKIM, and DMARC, which are critical for proving email legitimacy. It's vital to know how to comply with Outlook's new sender requirements which emphasize these standards.
Reputation signals: Documentation outlines the various signals ISPs use to assess sender reputation, including complaint rates, engagement, and bounce rates. For Google users, the Google Postmaster Tools spam rate dashboard is a key source of information.
Content guidelines: Many providers offer guidelines on acceptable content, formatting, and link practices to avoid triggering spam filters.
Engagement measurement: Documentation often details how engagement is measured and its impact on inbox placement, encouraging senders to focus on relevant, wanted email.
Key considerations
Accuracy and specifics: Documentation provides precise technical requirements and best practices, leaving little room for misinterpretation.
ISP-specific requirements: Different ISPs may have unique guidelines, making it essential to consult their respective postmaster pages.
Updates and changes: Documentation is regularly updated, reflecting new policies and evolving spam trends, which means continuous review is necessary. For example, Klaviyo Academy offers a course to understand deliverability from a comprehensive perspective.
Technical detail: While sometimes dense, this information is critical for deliverability professionals to implement robust sending infrastructure and compliance measures.
Technical article
Documentation from Klaviyo Academy emphasizes defining deliverability and differentiating it from mere delivery. It explains how email messages traverse networks and reach their destination, detailing the complex interplay of servers and protocols. This foundational understanding is crucial for anyone looking to optimize their email performance beyond just basic sending.
01 Apr 2025 - Klaviyo Academy
Technical article
Documentation from Sender Score outlines the fundamentals of email deliverability, providing a self-paced course to deepen email knowledge. It guides senders through key concepts, such as sender reputation, authentication, and content optimization, helping them become more effective email senders. This structured learning pathway is ideal for building a strong base in deliverability.