HTML email is not supported because converting HTML to a PDF is not
trivial. If an email only contains an HTML, the HTML part is converted
to a text email (not trivial but easier).
Whether or not an attached image gets added depends on the MIME
structure. With images added as attachments and an HTML alternative
part, the MIME structure with most email clients looks like:
If any images are only considered to be used for HTML it might look
Apple Mail might even complicates things.
For example with most email clients, attaching a PDF looks like
Apple Mail however sometimes adds the PDFs inline with the HTML part
The scanner which scans the email for parts, searches for the text part
and if found, will stop scanning the alternative part. Any inline
images or attachments under the HTML part (for example inline images or
Apple Mail inline attachment) will therefore not be added as
attachments because they are considered to be only valid for HTML.
However, if you enable "Deep scan", the gateway will continue scanning
the HTML alternative part for attachments
Any inline image will then also be added.
CipherMail email encryption
Email encryption with support for S/MIME,
OpenPGP, PDF Messenger and Webmail Messenger
On Fri, 2021-06-11 at 12:34 +0000, Dino Edwards via Users wrote:
Does anyone have any ideas?
From: Dino Edwards via Users <users(a)lists.ciphermail.com>
Sent: Monday, June 7, 2021 9:17 PM
Cc: Dino Edwards <dino.edwards(a)mydirectmail.net>
Subject: HTML PDF Encrypted e-mail
I was wondering if it’s possible to send HTML encoded PDF encrypted
e-mail. I noticed that embedded images in the e-mail do not show up.
Is this an issue with the PDF viewer or ciphermail not processing
HTML e-mail? Is it a security issue?
Thanks in advance