Amazon Simple Email Service
Developer Guide

Amazon SES Email Sending Metrics FAQs

Amazon SES collects several metrics about the emails you send. These metrics enable you to analyze the effectiveness of your email program and monitor important statistics, such as your bounce and complaint rates.

This section contains FAQs on the following topics related to email sending metrics:

General Questions

Q1. After an email is delivered, how long will Amazon SES continue to collect open and click metrics?

Amazon SES collects open and click metrics for 60 days after each email is sent.

Q2. If a user opens an email multiple times, or clicks a link in an email multiple times, is each of those events tracked separately?

If a recipient opens an email multiple times, each instance is counted as a unique open event. Similarly, if a recipient clicks the same link multiple times, each click is counted as a unique click event.

Q3. Are open and click metrics aggregated, or can they be measured down to the recipient level?

Opens and clicks are tracked at the recipient level. With open and click tracking, you can determine which recipients opened an email or clicked a link in an email.

Open Tracking

Q1. How does open tracking work?

At the bottom of each email sent through Amazon SES, we insert a 1 pixel by 1 pixel transparent GIF image. Each email includes a unique reference to this image file; when the image is opened, Amazon SES can tell exactly which message was opened and by whom.

The addition of this tracking pixel does not change the appearance of your email.

Q2. Is open tracking enabled by default?

Open tracking is available to all Amazon SES users by default. To use open tracking, you must do the following:

  1. Create a configuration set.

  2. In the configuration set, create an event destination.

  3. Configure the event destination to publish open event notifications to a destination.

  4. In every email for which you want to track opens, specify the configuration set that you created in step 1.

For a more detailed explanation of this process, see Monitoring Using Amazon SES Event Publishing.

Q3. Can I omit the open tracking pixel from certain emails?

There are two ways to omit the open tracking pixel from your emails. The first method is to send the email without specifying a configuration set. Alternatively, you can specify a configuration set that is not configured to publish data about open events.

Q4. Do you track opens for text versions of emails?

Because open tracking relies on the inclusion of an image, it is not possible to collect open metrics for users who open emails using a text-only (non-HTML) email client.

Click Tracking

Q1. How does click tracking work?

To track clicks, Amazon SES modifies each link in the body of the email. When recipients click a link, they are sent to an Amazon SES server, and are immediately forwarded to the destination address. As with open tracking, each redirect link is unique. This enables Amazon SES to determine which recipient clicked the link, when they clicked it, and the email from which they arrived at the link.

Q2. Can I disable click tracking?

You can disable click tracking by adding an attribute, ses:no-track, to the anchor tags in the HTML body of your email. For example, if you link to the AWS home page, a normal anchor link resembles the following:

<a href="">Amazon Web Services</a>

To disable click tracking for that same link, modify the link to resemble the following:

<a ses:no-track href="">Amazon Web Services</a>

Because ses:no-track is not a standard HTML attribute, we automatically remove it from the version of the email that arrives in your recipients' inboxes.

Q3. Is there a limit to the number of links that can be tracked in each email?

There is a limit to the number of links that can be tracked in a single email, although you are highly unlikely to encounter this limit in practice. Currently, the click tracking system will track a maximum of 250 links.

Q4. Are click metrics collected for links in plaintext emails?

Amazon SES does collect click metrics for links in plaintext emails. However, links in plaintext emails refer to a domain owned by Amazon SES. If it is important to you that links in plaintext emails include links to your organization's branded URLs, consider disabling click tracking. For more information, see Q2. Can I disable click tracking?

Q5. Can I tag links with unique identifiers?

You can add an unlimited number of tags, as key-value pairs, to links in your email by using the ses:tags attribute. When you use this attribute, specify the keys and values using the same format that you would use to pass inline CSS properties: type the key, followed by a colon (:), followed by the value. If you need to pass several key-value pairs, separate each pair with a semicolon (;).

For example, assume you want to add the tags product:book, genre:fiction, subgenre:scifi, type:newrelease to a link. The resulting link resembles the following:

<a ses:tags="product:book;genre:fiction;subgenre:scifi;type:newrelease;" 
    href="">New Releases in Science Fiction</a>

These tags are passed through to your event publishing destination so that you can perform additional analysis on the specific links that your users clicked.