# When has an email been counted as opened

**URL:** <https://community.hubspot.com/t/when-has-an-email-been-counted-as-opened/3666>\
**Category:** Email Marketing Tool\
**Created:** [October 24, 2017, 8:32am UTC](https://community.hubspot.com/t/when-has-an-email-been-counted-as-opened/3666 "2017-10-24T08:32:31Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Mignon](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/mignon/32/53869_2.png) [@Mignon](https://community.hubspot.com/u/Mignon)\
**Post date:** [October 24, 2017, 8:32am UTC](https://community.hubspot.com/t/when-has-an-email-been-counted-as-opened/3666/1 "2017-10-24T08:32:31Z")

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Hello,

can somebody tell me, when an email is counted as opened.

Is it a downloaded Pixel? A downloaded image?

Is a preview already counted as opened?

Where can i read the information?

Thanx for your help in advance!

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<div class="post-metadata">

**Author:** ![shearn](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/shearn/32/67336_2.png) [@shearn](https://community.hubspot.com/u/shearn)\
**Post date:** [October 24, 2017, 8:41am UTC](https://community.hubspot.com/t/when-has-an-email-been-counted-as-opened/3666/2 "2017-10-24T08:41:16Z")

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“HubSpot is able to track email opens by embedding a one-pixel invisible image into the message once it is sent. When your recipient views the email and the image loads, HubSpot counts this as an open.”

Full Academy article here: [https://knowledge.hubspot.com/articles/kcs\_article/email/how-does-hubspot-calculate-email-opens](https://knowledge.hubspot.com/articles/kcs_article/email/how-does-hubspot-calculate-email-opens)