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Content disappearing for e-mails sent from ActiveCampaign Mailer

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panther2
panther2
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There is a small subset of senders, all of whom seem to be sending e-mail via ActiveCampaign Mailer (activehosted.com) for which I have a problem. When I view the e-mails from them in Thunderbird, I see only a tiny bit of text -- the full graphical content of the e-mail has disappeared (really all of the content, there is no alt-text for the images, just 2 lines of vestigial text). I **only** have this problem when viewing the e-mails in Thunderbird. When I view these e-mails in my ISP's webmail tool, everything is intact. Only when the mail gets downloaded into Thunderbird does the problem occur.

I have already tried disabling my BitDefender anti-spam and that doesn't help.

The e-mail headers of the truncated e-mail in Thunderbird are exactly the same as those on the intact e-mail in the webmail tool (when BitDefender is disabled).

Why is Thunderbird doing this? How can I stop it?

Thanks so much for attention and advice!

There is a small subset of senders, all of whom seem to be sending e-mail via ActiveCampaign Mailer (activehosted.com) for which I have a problem. When I view the e-mails from them in Thunderbird, I see only a tiny bit of text -- the full graphical content of the e-mail has disappeared (really all of the content, there is no alt-text for the images, just 2 lines of vestigial text). I **only** have this problem when viewing the e-mails in Thunderbird. When I view these e-mails in my ISP's webmail tool, everything is intact. Only when the mail gets downloaded into Thunderbird does the problem occur. I have already tried disabling my BitDefender anti-spam and that doesn't help. The e-mail headers of the truncated e-mail in Thunderbird are exactly the same as those on the intact e-mail in the webmail tool (when BitDefender is disabled). Why is Thunderbird doing this? How can I stop it? Thanks so much for attention and advice!

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Matt
Matt
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Is the email reliant on scripting perhaps? Something Thunderbird does not support for security reasons.

I have seen remote scripting used to display images, and also report on who and were they were that accessed the mail. A classic use of that is the display of the twitter image. You use the link they provide and get nothing because the link is to a script, not an image.

The code for the twitter button is < a href="https://twitter.com/share?ref_src=twsrc%5Etfw" class="twitter-share-button" data-show-count="false">Tweet</a><script async src="https://platform.twitter.com/widgets.js" charset="utf-8"></script>

It looks like an external link, and it is, just a link to a script.