kmail has a nice feature, that allows pasting selections of a calc table as images into html mails.
Unfortunately, that feature fails often, due to creating invalid image tags, eg:

<im=
g src=3D"PLZ=09Transporte=09STP=09STP-=F8=09Paletten=09Pal-=F8=09Gesamt=
gewicht=09Gewicht-=F8
0=092" /></p>

(line wraps left intact intentionally)

while the attachment looks like:

--nextPart3277463.dT9fysvj0a
Content-ID: <1173981377@KDE>
Content-Transfer-Encoding: base64
Content-Type: image/png

[...]

Consequently, the picture isn't shown in the mail. Now, older kmail versions (1.6) deal better with that situation by displaying the picture like an ordinary attachment below the mail. 

Not so kmail2: it just shows a symbol for a damaged image, with no way to get to the image other than saving the mail to disk, and using some external tools to extract its attachments. 

That combination is very unfortunate. So here are two kind requests for changes:
when inserting inlined images, always address them by content id: src="cid:1173981377@KDE"

When detecting attachments with no (valid) anchors in the mail text, display them as usual attachments, please.


Reproducible: Always

Steps to Reproduce:
Select some part of a table in calc, copy it, and paste it into a html mail.
Actual Results:  
Often, an icon for an invalid image is shown

Expected Results:  
The image should be visible

BTW: using gimp as a copy/paste trampoline, that failure disappears.