# Knowledge Base

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

## ESP Guides

### [SendGrid vs Mailtrap SMTP Services: A Comprehensive Comparison](https://folderly.com/blog/sendgrid-vs-mailtrap)
Choosing an SMTP service isn't just about sending emails - it's about getting them delivered. This article explores how SendGrid, the popular service built for mass distribution, compares to Mailtrap Email Delivery Platform.

### [No More Mailchimp Emails Going to Spam with These 13 Tips](https://folderly.com/blog/mailchimp-emails-going-to-spam)
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.

### [Why is Gmail Blocking My Emails: Most Common Reasons Revealed](https://folderly.com/blog/gmail-is-blocking-my-emails)
Discover the right answers to the common question of why Gmail is blocking your emails. Get to know the main reasons for this issue and fix your email deliverability.

### [Setting Up SPF Records for Your Google Workspace Account (a.k.a. G Suite)](https://folderly.com/blog/google-spf-record)
Setting up SPF records is essential to keep your domain name safe. If you use Google Workspace for email marketing, follow the steps below.

### [What Are the Underlying Reasons for G Suite Emails Go to the Spam Folder?](https://folderly.com/blog/google-workspace-emails-going-to-spam)
Why do your G Suite messages go to Spam? What are the main steps to take to solve this? Read the Folderly guide to solve the matter once and for all!

### [The Notion of a SendGrid Blacklist and How to Steer Clear of It](https://folderly.com/blog/sendgrid-blacklist)
What should you do if you hit SendGrid blacklist? How to avoid getting on any known denylist? These and many more important matters are closely reviewed in a comprehensive and informative SendGrid blacklist review. Don't waste a second and discover the nuances you had no clue about!

### [How Do You Compliment MailChimp Blacklist Strategy?](https://folderly.com/blog/mailchimp-blacklist)
What is the main MailChimp blacklist avoidance strategy? How do you keep your email marketing campaign active and uninterrupted? You will find all the useful tips and related information well-described in the dedicated service review.

### [Vital Perks Of SendGrid SPF Record and SendGrid DKIM Record](https://folderly.com/blog/sendgrid-spf-record)
Discover the definition and great deliverability powers that hide behind SendGrid SPF record and SendGrid DKIM record. Learn how to implement and set up the complicated protocols into the workflow to enhance and upgrade it. Finally, observe the email deliverability rates and revenue skyrocket!

### [How Does SMTP SendGrid Service Work: In-Depth Guide](https://folderly.com/blog/sendgrid-smtp)
Would you like to know what SMTP SendGrid is and how to use it to your business’s benefit? Read the detailed guide to skyrocket your profits!

### [Practical Benefits of SendGrid Domain Authentication Services](https://folderly.com/blog/sendgrid-domain-authentication)
What is SendGrid domain authentication? How can it help your business grow? Can you manage to set it up on your own? All the detailed answers to these complex and technical questions can be found in a step-by-step guide written by dedicated industry professionals.