open rates vs downloading images

[bbradley]

How does HubSpot measure opens?  Are downloading images what constitutes an open?  What happens if there are no images in the email?

[shearn · Accepted solution]

See the relevant article: https://knowledge.hubspot.com/articles/kcs_article/email/how-does-hubspot-calculate-email-opens 

"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."

[shearn · Accepted solution]

See the relevant article: https://knowledge.hubspot.com/articles/kcs_article/email/how-does-hubspot-calculate-email-opens 

"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."

[bbradley]

Thank you for your quick response, very helpful.  I am a little confused by the below - does this mean that clicks are not unique and only calculated when opened/downloaded?

For HubSpot marketing emails only, an email open will be calculated if a user clicks on a link in an email, even if images (and the tracking pixel) don't load.

[Phil_Vallender · Accepted solution]

Hi @bbradley

The statement you quoted indicates that if a recipient's email client prevents downloading of the tracking pixel but they do click a link, HubSpot is still able to identify this as an open (and a click).

Hope this helps.