Google Postmaster

A Google Postmaster tool is a free service that allows email senders to monitor and improve email deliverability. It provides insights into email performance and sender reputation, such as spam complaints, bounce rates, and authentication status.

It's highly advisable to set up the Google Postmaster tool, especially if a significant portion of your contact list consists of Gmail users. This step ensures access to valuable data insights that can enhance your email marketing strategies.

Here is a peek into what you can get from the tool:

?? Domain reputation

?? IP reputation

?? Delivery errors

?? Spam rate

?? % of emails that passed the authentication

?? Encrypted traffic

Why should you use Google Postmaster tools?

Google Postmaster Tools is a great tool to use when you send email campaigns to Gmail users. You can improve your email deliverability with the insights you get from the postmaster tools.

For example, you can see if the last email campaign had high delivery errors. With this data, you can investigate to find the root cause for the issue and use the learnings to improve future campaigns.

Also, Gmail has a 27.4% market share and is the second most popular email client. If you regularly send emails to your email list, most of them probably are Gmail users. So it is beneficial to make use of the tool.

Google, being the owner of Gmail and Postmaster, can extract performance data from Gmail and present it in Google Postmaster. This ensures you receive precise data directly from one of the world's largest email service providers.

Lets take a look at how to set up and use Postmaster tool

How to set up Google Postmaster tools?

To access Google Postmaster tools, having a Google account is necessary. If you don't have one yet, please create an account now.

Assuming you already have an active Google account, let's proceed with setting up the Postmaster tool.

1. Visit postmaster.google.com and log in with your Gmail account.
2. Click the “+” icon at the bottom right of the screen.
3. Enter your authentication domain name in the popup that appears next.

1. Google Postmaster will generate a TXT record. Copy it and add it to your DNS configuration of the entered domain.

1. You can add a CNAME record as an alternate option if you’re having trouble with the TXT record.
2. The below image shows how you can add your record to a GoDaddy domain name. It will be similar for other domain name providers as well.

1. You’ve to verify the ownership after you’re done adding the record. You can do this by clicking “Verify” in the popup, which will show you a success message.

1. Once you’re done adding and verifying the domain, wait for some time until Postmaster collects your associated data. Once it’s done with that, you can explore the tools it offers and measure your email campaigns.

How to use the Google Postmaster tools?

1. Domain reputation

Google determines your domain reputation score based on your history of spam complaints. Your domain reputation influences whether or not an email is delivered to the inbox by the email client.

Google Postmaster domain reputation will rate your domain as bad, low, medium, or high.

Bad - The domain has a history of spam complaints, and the email from this domain will end up in the spam folder.

Low - The domain has notable spam complaints, and emails from this domain will likely end up in the spam folder.

Medium - The domain sends spam emails occasionally, and the emails from this domain will most probably reach the inbox unless there is a sudden spike in the spam levels.

High - The domain sends high-quality emails following email etiquette and has a low spam rate. Emails from this domain will land in the inbox.

2. IP reputation

Your emails are sent from a device with a particular IP attached. The inbox providers will assign a negative reputation if many spam emails are sent from that IP.

On the other hand, if it is a dedicated IP address and well-maintained, it will earn a good reputation from inbox providers.

Again, the Google Postmaster will rate your IP's reputation as bad, low, medium, or high. If it is on the lower end of the spectrum, improve it. If it is on the higher end, maintain it.

3. Spam rate

Spam rate helps you identify the percentage of users marking you spam. These people may not have found your content helpful. So if this number is significantly high, you'll have to make some tweaks to your email campaigns. Here are some suggestions:

1. Find the right email cadence and follow it.
2. Form a sunset policy and identify disengaged users.
3. Create a suppression list and cut your ties with these users.

You'll see a positive impact on your spam rates if you follow these steps.

4. Delivery errors

Not every message reaches your user's inbox for many reasons. The delivery error dashboard shows you the percentage of emails that didn't make it to the users' inboxes and got rejected – temporarily or permanently.

Here are the error codes you will see in the Postmaster tool:

Rate limit exceeded: Gmail will put a temporary limit when your IP sends too much traffic at higher rates.

Suspected spam: Gmail flagged the traffic from your IP as spam.

Email content is possibly spammy: Gmail systems detected the traffic as spam due to the email content.

Bad or unsupported attachment: Unsupported or bad email attachments are detected by Gmail.

DMARC policy of the sender domain: The sender domain has set up its DMARC rejection policy.

Sending IP has a low reputation: The sender IP has a poor reputation.

Sending domain has a low reputation: The sender domain has a poor reputation.

IP is in one or more public RBLs: The sender IP is listed in one or more public Real-time Blackhole Lists.

Domain is in one or more public RBLs: The sender domain is listed in one or more public Real-time Blackhole Lists.

Bad or missing PTR record: The sender IP has no PTR record associated with it.

Follow these steps to lower the delivery rate as much as possible:

?? Set up your DMARC, DKIM, and SPF record.

?? Don't add a malicious attachment to your emails.

5. Authenticated traffic

In this dashboard, you'll see how many emails have passed the DMARC, DKIM, and SPF records versus the total number of emails that attempted to pass. This dashboard has three graphs meant to show the data of these three records.

SPF graph: This graph shows the percentage of emails that passed SPF vs. all emails from that domain that attempted SPF, excluding spoofed emails.

DKIM graph: This graph shows the percentage of emails that passed DKIM vs. all emails from that domain that attempted DKIM.

DMARC graph: This graph shows the percentage of emails that passed DMARC vs. all emails received from the domain that passed SPF or DKIM.

6. Encryption

Emails must be encrypted to keep your data safe from third-party intruders. And for that reason, this graph shows you the number of encrypted incoming and outgoing emails.

The Transport Layer Security (TLS) mechanism is used to check the encryption of emails.

The encryption graph should always be at 100%; if it isn't, it can become a serious security and deliverability threat, and you need to get it sorted quickly.

That's it. Congratulations on making it this far!

Summary

Google Postmaster is an indispensable tool for email senders to detect deliverability issues and fix them. Postmaster provides valuable insights into open rates, click-through rates, IP reputation, spam rate, etc. allowing you to fine-tune your email campaigns.

By leveraging the power of Google Postmaster, marketers can stay ahead of the competition, detect and fix issues with their email campaigns and ensure that their email campaigns are deriving the desired results.

Do you have any questions about Postmaster? Ask me in the comments section.