I looked at the Marketo help guide (Campaign Email Performance Report - Marketo Docs - Product Docs ) and it only says "Email is still in the process of being delivered". Why would there be a delay in email sending? Especially if it was a the email prevention rules are off, and it was done in an email campaign structure.
Email Performance Report - Marketo Docs - Product Docs :
| This number is calculated by subtracting the number of emails Delivered, Bounced, and Soft Bounced from the total number Sent. |
When sending through Marketo, it's usually related to the recipient's ISP, but if you're noticing a large percentage of pending emails for extended periods of time every time you send emails, it might be time to revisit your deliverability strategy and check into your own ISP.
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