# Knowledge Base

Explore deliverability and learn how to fix spam, send email to right folder

## Email Deliverability

[What Does Bounced Email Mean? Complete Guide to Email Bounce Fixes](https://folderly.com/blog/email-bounce-complete-guide-fixing-preventing-bounced-emails)

Stop losing leads to bounced emails. Learn what causes email bounces, how to fix them, and proven strategies to protect your sender reputation and boost deliverability.

[Email Spam Words to Avoid in 2025: Complete Guide + Safer Alternatives](https://folderly.com/blog/email-spam-words-to-avoid-2025-complete-guide-alternatives)

Stop letting spam trigger words kill your email deliverability. Discover 100+ words that land emails in spam folders and get proven alternatives that actually work in 2025.

[Why Are My Cold Emails Going to Spam? (Complete 2025 Fix Guide)](https://folderly.com/blog/why-are-my-cold-emails-going-to-spam-2025-fix-guide)

Discover why cold emails often land in spam and learn the complete 2025 guide to fix it. This article covers essential email authentication (SPF, DKIM, DMARC), sender reputation management, content best practices, list hygiene, sending patterns, and a 7-step remediation plan to improve inbox placement and email outreach success in 2025.

[Inbox Success in 2025: 5 Email Deliverability Trends You Can’t Miss](https://folderly.com/blog/email-deliverability-trends-2025-guide)

Email deliverability isn't just a tech issue anymore — it's your new sales metric. Learn the 5 critical trends reshaping inbox placement in 2025 and how to turn them into your competitive advantage.

[New Outlook Authentication Requirements: What High-Volume Senders Need to Know](https://folderly.com/blog/outlook-authentication-requirements-2025)

Microsoft updated its authentication requirements for Outlook high-volume senders. Non-compliant messages get junked or rejected starting May 2025.

[Email Delivery vs. Email Deliverability: Key Differences Uncovered](https://folderly.com/blog/email-delivery-vs-deliverability)

Did you know that email deliverability and email delivery rate aren’t the same thing? If you did, great! If you didn’t, good thing you found this blog post. Uncover the essential differences between email deliverability and delivery, debunk key myths, and elevate your email campaigns for unparalleled success.

[What Is BIMI and Why It’s a Must-Have for Your Domain Reputation](https://folderly.com/blog/what-is-bimi)

You have to watch out for innovative methods of building trust and improving your results. BIMI is the innovation that can give your email marketing a powerful boost while adding more credibility to your sender reputation. Let’s see how you can harness its benefits!

[Email Bounces Explained: Types, Examples & What To Do](https://folderly.com/blog/email-bounces)

Learn about different email bounce types through real examples explained and get actionable tips on how to address them effectively.

[How Gmail AI Spam Filter Update RETVec Affects Email Users](https://folderly.com/blog/gmail-ai-spam-content-filter)

Recent Gmail's spam filter update RETVec is set to revolutionize spam detection. What does this mean for email marketers? Which applicable tips will assist in improving sender reputation and avoiding spam folders? Look over this A-Z guide.

[11 Best Email Deliverability Tools Reviewed and Compared](https://folderly.com/blog/email-deliverability-tools)

Explore the best 11 best email deliverability tools for your confident email outreach in 2024 and get a comprehensive review of each tool by experts to choose your winning solution.

[Email Deliverability vs Email Warmup: Uncover The Difference](https://folderly.com/blog/email-warmup-vs-email-deliverability)

Did you know that email warmup tools won't improve your email deliverability? Before you decide to improve your email deliverability with warmup tools, check out this post. We'll walk you through the distinctions between warmup and deliverability tools so you can make an informed decision.