To ensure your emails send correctly in CRM, you'll need to send them from a queue (please see this article for information on how to send from a queue). If you don't choose a queue to send from, the email will sit in your pending mail, which will cause you to receive a notification every time you login to CRM that you have pending emails waiting.
To remove the pending mail, you'll need to reroute those messages into the SPAM queue, as this is cleared each week by the CRM team. Before routing to the SPAM queue, please ensure that you've re-sent the messages correctly from a queue, to prevent losing any important information.
To reroute them, open up the Service menu, and select Activities.
Click on the small drop-down arrow (it may say My Activities here), select Email, then My Pending Emails.
Select the pending emails you need removed, then click on the ellipsis (three dots) up the top-right, and select Add to Queue.
Once the Add to Queue box pops up, hover over the queue name field and click on the search button (magnifying glass). In here, ensure you've selected Queue in the Look For field, then search for SPAM. Select the SPAM queue, and click Add.
Now click Add, and your items will have been routed to the SPAM queue.
Please note that you will still receive the pending email notification until this queue is cleared by the CRM team. This is done every week on Friday afternoon.
If you have any further issues with pending emails, please email firstname.lastname@example.org for assistance.