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Why is my email so slow? Check the email header.

Having an email message to take forever to arrive can be very annoying and sometimes it leaves people wondering why is this even happening. In this article I’ll show you how to analyze email headers of an email message.

What is an email header?

An email header is a timeline of where the email message went through to get to you and the different email systems it touched during the delivery process. It’s sort of like looking at the tracking information of your UPS delivery. The only way to find out where the slowness is happening is to review the email header of that sluggish email message.

Where can I find the email header?

First, the email message must arrive at the destination before you can review the headers. We have instructions on how to view email headers in our knowledge base. There are multiple ways of viewing the headers. Here is another list that can help you find your email headers.

How to analyze the email header

Email headers can look ugly and hard to understand. Luckily there is a email header analyzing tool provided by MxToolBox.com that can help with that.

Copy and paste that ugly looking email header into the empty field and click on Analyze Header.

In the results, the email server with the longest bar graph is going to be the email server that is causing the most delay.

Why is this occurring?

There are many different reasons why an email message could be slow. One common reason is that the email server that caused the most delay had a large amount of email messages to process. If you see that the latency is happening in one of our email servers, we will gladly check our system for you and the logs to see what might be happening. Please contact our support department via our support portal for assistance.

For the most part most email servers are temporarily handling large volume of emails and will go back to normal performance on their own. However, if you’re seeing this issue keeps happening at a particular email server, you can contact the email administrator of that email system and provide them with the email header as proof.

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