I'm having the exact same issue.
Seems to be a problem introduced just recently as I didn't notice it a couple of patches ago. Was made aware of it by the mail_report cronjob running on the server. Got an email saying
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Take a look at https://lab.civicrm.org/dev/core/-/issues/2220 - we never figured out why on some sites it doesn't load the defaults. But you can manually set it with e.g.
cv ev "Civi::settings()->set('simple_mail_limit', 50);"
You can find all contacts who share a primary email with members of a group, and save those contacts to a Smart Group, using Civi's APIv4. This solution was developed on CiviCRM 5.32.2 and may not work on previous versions.
Navigate to the API4 explorer within your Civi. Then configure a query as in the screenshot below, or paste the following into your URL ...
It's the metric. Open rate is not a reliable metric. An open is tracked through an image pulled from your crm server. If images aren't loaded the open doesn't get recorded. Further, Gmail uses something called image image proxying, i.e. they cache the images on their servers instead of pulling the images from your server.
Click rate is a reliable metric, ...
I would say email end up in spam for many reason and this is not an CiviCRM fault -
I would suggest you to look for SPF, DKIM and DMARC - configuration first
Also for your reference : my emails going to recipient spam
I hope this helps !!!!
Not exactly what you want to do, but if you install the Resend Mailing extension, you can select one or more contacts from search results and use the action drop down menu to resend a mailing to those specific contacts.
Alternatively, you could just add the new recipients to the original group you used for the mailing and resend the mailing, subtracting the ...