Verify the “FROM” email from your account. The issue is likely with the email being used as the From email for the Agency.
Emails sent by a 3rd party software using an alias from a Yahoo, Gmail, Hotmail account are flagged by most ISPs so you will need to have the email sent from a business email address to avoid any issue.
Try using a URL vs an email provider ( [email protected] ) you're likely being flagged as spam since you are using a 3rd party email service as the FROM URL.
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