Hello Raymond,
Please send this message to users.

Try adding the sender to the safe sender list.
From your Bell Mail inbox, click on Options in the top right corner. Select More Options from the drop-down menu.
Under Preventing junk email, click Safe and blocked senders, then click Safe senders.
Type the email address of the sender in the Sender or domain to mark as safe box, and then click Add to list.

Ask them to add info@purplechips.com to safe box