We navigated our way through Yahoogle and now Microsoft is following suit

Microsoft introduced new requirements – Here's what creators need to know

Google's retiring its old Postmaster Tools dashboard on October 31, 2025. If you track your Gmail deliverability, here's what's changing and how to keep your emails reaching your audience.

Google Postmaster Tools is changing: what creators need to know

Get your emails where they belong—in your subscribers' inboxes. Learn everything from the basics to advanced techniques.

Deliverability

Learn about deliverability and how it can help your list growth!

Deliverability 101

Follow this checklist to reach your subscribers' inboxes right off the bat!

Getting Started with Deliverability Success

Here's a checklist with the common reasons emails go to spam and how to fix it!

Why are my emails going to spam?

Here's everything you need to know about your email open rates.

What are open rates and how are they calculated?

Using a double opt-in can lead to higher list engagement and better inbox placement.

The all-important double opt-in

Advanced custom options for your deliverability.

Verify your domain to optimize your deliverability

Improve your deliverability, and avoid failed or bounced emails.

Why do I need my own domain to send email?

Help subscribers ensure that your messages go straight to their inbox by allowlisting your sending address.

How to ask subscribers to allow your emails

Deliverability Fundamentals (Start Here)

Managing your list of subscribers for a more engaged list and better deliverability.

Cleaning and managing your list

Certain types of links aren't allowed in emails, including link shorteners. Here's what that means for you as a sender.

What links aren't allowed in Kit emails?

Best practices for knowing how often to send emails to your list, and how many emails to send.

Email Sending Frequency and Volume

Which email programs does Kit support?

A guide on understanding why you might have unconfirmed subscribers and what you can do.

Why do I have unconfirmed subscribers?

What is a listbomb and why is it a problem for you?

Listbombs

Find out what it means when you get this error page.

500 Error From Updating Subscriber Email Address

Our best tips and practices to maintain a healthy email list

Maintain a Healthy Email List

Customize your domain using your account settings!

kit.com domains

Learn the basics of DMARC, why it exists and how you can benefit from it's protection.

DMARC: What is it and should you use it?

The "Precedence: Bulk" header prevents you from receiving auto-responder messages, and helps your messages perform better at Gmail.

What does the "Precedence: Bulk" header mean?

How to determine if a dedicated IP is the right fit for you and how to request one.

What You Should Know About Switching To A Dedicated IP

How to add Kit IPs to your Allowlist or Safelist

Learn how to create a DMARC record and add it to your verified sending domain.

How to add a DMARC record to your verified sending domain

How your domain reputation influences inbox placement

How to safely increase your DMARC record

What you should know before setting up a Verified Sending Domain

Best practices to set your deliverability for success

Technical Setup for Success

Understanding Gmail's Promotions tab and why it can be a good thing.

Gmail Promotions Tab

Gmail and Yahoo’s new requirements for 2024 and what to expect

What you should know about Google Postmaster Tools and how to set it up

Learn more about Gmail's one-click unsubscribe requirement

Gmail's One-Click Unsubscribe

Platform-Specific Guidance

Here are the most common reasons behind your confirmation email landing in the spam folder.

Why are my confirmation emails going to spam?

Are you using inbox placement testing correctly?

Inbox Placement Tests: How to Analyze the Results

Some Subscribers have strict security settings that can skew your metrics. Here's what you can do.

Why are my emails being automatically opened or clicked?

Here are some tips for a positive start with your email sending.

Why have my open rates changed since moving to Kit?

Troubleshooting & Monitoring tips and best practices

Troubleshooting & Monitoring

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