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Civi: mailing events count really high for 10/6 email send
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cid=36680085 has 1400+ mailing events listed, looks kinda buggy:

Screen Shot 2020-10-08 at 2.31.03 PM.png (1×2 px, 263 KB)

Event Timeline

If there isn't a technical explanation, some possible reasons for this might be:

  1. Many email clients like (Outlook or Apple Mail) have a preview pane as part of the inbox view. If a recipient scrolls over your email in their inbox (even passively), this can trigger an email open notification back to our software. Industry wide opens are tracked by images. When the image is displayed, the email is considered opened. This is controlled by the email client and is not distinguishable from normal opens.
  1. Direct forwards could also be the culprit, depending on how the Forward was initiated. If the recipient of your email uses the Forward feature in their email client, the open of the person receiving the forwarded email is tracked back to your original recipient. When using the Forward feature in the email client, it's sending an exact copy of the original email.
  1. There are also instances of virus scanners that preview emails to determine spam. In this case, we do not have a way to distinguish between machine clicks and human clicks.


Thanks so much for the information, @MNoorWMF that's really helpful.

This doesn't impact Donor Services workflows, and if it doesn't affect the email team I'll set the priority of this Task to Low and Fr-Tech and can determine whether this is worth prioritizing or keeping open.

FWIW, I took a look at our unique opens vs our total opens and this little blip did show up but it seems it was only for this one user as the difference is only higher by ~1k so nothing concerning. It happens quite often with some of our sends. I noticed this donor also has a fairly unique email client so it might just be email client behavior.

Screen Shot 2020-10-09 at 9.42.32 AM.png (610×2 px, 331 KB)

Thanks for the extra info @MNoorWMF

As long as this doesn't affect Civi in any notable way I'll close this task next week as a 'too small to worry about' item. If anyone wants to keep it active please let me know.

MBeat33 claimed this task.