# Knowledge Base

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

## 14 Email Marketing Personalization Strategies That Work in 2023

**Category:** [Email Marketing](https://folderly.com/blog/category/email-marketing)  
**Read Time:** 13 min  
Deeper email marketing personalization strategies can lead to a 50% increase (and more) in reply rates. Discover what works in 2023 based on Folderly research.

## No More Mailchimp Emails Going to Spam with These 13 Tips

**Category:** [ESP Guides](https://folderly.com/blog/category/esp-guides)  
**Read Time:** 13 min  
Tired of Mailchimp strict anti-spam policies? These 13 tips will prevent Mailchimp emails from going to spam, enabling you to land smoothly in every inbox.

## HTML vs. Plain Text Emails: What Is the Best Choice in 2024?

**Category:** [Email Marketing](https://folderly.com/blog/category/email-marketing)  
**Read Time:** 16 min  
Which template should you use for your next email campaign? Plain text or HTML emails? Take a closer look at them, considering deliverability, security, engagement, and beyond so that you can choose the best option for your email outreach.

## Email Spam Filters 101: Types & How To Use Them Wisely

**Category:** [Email Deliverability](https://folderly.com/blog/category/email-deliverability)  
**Read Time:** 15 min  
Spam filters are scary. Sometimes it feels like they do everything possible to destroy your outreach. However, this isn’t true. Spam filters exist to protect your outreach. Your goal is to prove that you’re a legitimate sender. Discover the intricacies of email spam filters, how they work, and quick steps for bypassing them like a pro in this article.

## 5 Best Email List Scrubbing Software for List Hygiene in 2023

**Category:** [Email Deliverability](https://folderly.com/blog/category/email-deliverability)  
**Read Time:** 11 min  
Picking an email cleansing software isn’t easy when you consider the number of options on the market. Below, we’ll look at the essential features an email cleansing software should provide.

## 6 Email Marketing KPIs You Can’t Ignore in 2023

**Category:** [Email Marketing](https://folderly.com/blog/category/email-marketing)  
**Read Time:** 10 min  
Email marketing is still the most popular option for connecting, promoting, and boosting your product or service relevance. So, let's dive in and explore the key email KPIs you need to monitor to increase your ROI and supercharge your email marketing strategy.

## Mastering MX Records: A-Z Setup Guide

**Category:** [Email Deliverability](https://folderly.com/blog/category/email-deliverability)  
**Read Time:** 10 min  
Discover the essentials of setting up MX Records with our ultimate guide: learn about their role in email delivery, their structure, and A-Z setup instructions.

## Shared IP vs. Dedicated IP Dilemma: What's the Best Choice?

**Category:** [Email Deliverability](https://folderly.com/blog/category/email-deliverability)  
**Read Time:** 10 min  
Discover the key differences between shared IP vs. dedicated IP, find out how it affects your email marketing, and make the best choice for your campaigns.

## Outlook Blacklist Manual: From Listing Triggers to Removal

**Category:** [Email Deliverability](https://folderly.com/blog/category/email-deliverability)  
**Read Time:** 12 min  
What is an Outlook blacklist and how can it affect your email mailing campaign? No matter how serious the consequences that a blacklist hides are, there are simple and effective ways to stay clear of it. Care to find even more helpful information? All the details are presented in an expert review composed by Folderly professionals!

## Poor Email List Alert: Guide To Spot & Remove Spam Sign-ups

**Category:** [Email Deliverability](https://folderly.com/blog/category/email-deliverability)  
**Read Time:** 17 min  
Spam sign-ups aren’t as harmless as they may seem. Fake email addresses are dangerous for your email deliverability and sender reputation. Read on to learn how to detect, remove & prevent spam sign-ups with expert tips!

## POP3 vs. IMAP vs. SMTP: Email Protocols Essential Differences

**Category:** [Email Deliverability](https://folderly.com/blog/category/email-deliverability)  
**Read Time:** 14 min  
Some people involved in email marketing unknowingly confuse SMTP, IMAP and POP3 protocols considering them the same thing. If you want to avoid being among their ranks, read a detailed and simple-to-grasp guide on the matter compiled by our trained experts.