Comment on Roundcube Webmail: SVG feImage bypasses image blocking to track email opensparentComments−afavour7moIt's counter to the principle of what e-mail is. It's supposed to be static. Just because you can doesn't mean you should.−iamacyborg7moIt's supposed to be static.Says who? It's not in the original RFC as far as I'm aware.−SahAssar7moI'm pretty sure the original RFC (RFC 821) does not include remote resources and it was written far before HTML or HTTP was invented.It was text delivered over SMTP.
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It's counter to the principle of what e-mail is. It's supposed to be static. Just because you can doesn't mean you should.
Says who? It's not in the original RFC as far as I'm aware.
I'm pretty sure the original RFC (RFC 821) does not include remote resources and it was written far before HTML or HTTP was invented.
It was text delivered over SMTP.