Hi - mimecast seems to be blocking images in our emails, we are hosting them on our branded sub-domain. But they all come thr…

Hi @JWright76 Thank you for posting your question again. The header x-hs-alternate-content-type: text/plain is almost certa…

Update: it doesn’t seem to be url paramaters causing the issue. I did a quick test using a custom module and it just seems to…

More digging, I’ve run the image headers through GPT for a standard social icon (which displays) vs the same image but held i…

Mimecast blocking images

Marketing & Content Hub Email Marketing Tool

Victor_Becerra July 2, 2025, 7:32pm 4

Hi @JWright76 ,

Thank you for reaching out to the Community!

I wanted to invite our subject matter experts to this conversation. Hi @MikeCormack @karstenkoehler @Niharika - Do you have any advice for@JWright76 ? Thank you!

Best,

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Mimecast blocking images

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