I recently started reviewing the engagement of individual contacts and found that for some the list of sent emails has big gaps. Like the example attached, the engagement does not show all of the emails sent in 2021 and none of those in 2020, but skips to 2019. Why is that? Does it mean emails for her were not sent out, even though she is on a contact list - general - that receives 99% of all? Thanks for your help.
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