Hello @PaulineW96 ,
A lot of different things go into spam filtering for email clients. Some different things that can cause a spam folder delivery are: Keywords and Phrases, Images, Links, Past Email Engagement and Sender Reputation, your Sending Address and Duplicate Emails with identical subject lines and content. I have attached a knowledge base article here that discusses common things that trigger spam filters and what to avoid to keep your emails from being filtered as spam. We do as well have a Deliverability Support Staff that is available by phone to help and make recommendations on how to prevent this. That team can be reached at phone number 866-433-8499.
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