I sent a mail with attachments to a pc laptop. the mail did not display correctly and the text body disappeared.

I am inclined to cast blame on your recipient's Mail client OR his email service provider's security filters

My reasoning is that their provider gets it first in the transmission - where their anti-SPAM strategy can do any number of things, but most likely would mark it AS SPAM and stick it in an IMAP folder for Junk

My Mail client on Windows 10 is Mozilla Thunderbird which also as fairly robust security - even for "trusted" senders it sometimes "blocks" content and then Barks about it (there is a BUTTON that has a menu of various "allow" options)

Attachments are "old school" culprits for containing malware, so some level of sandboxing of ANY attachment might not be a bad idea - and your report multiple attachments!

Without knowing the recipient's email provider and their Mail client software (and version), I can't give any more than this explanation of possible things to look at

You didn't mention anything in the email about a Nigerian Prince or Spanish_Prisoner did you?

I am stickin' to my story = recipient's provider or client

It is even more likely that the content of rate card, images, etc. was flagged as SPAM-ish

You need to get your client to open their kimono about the "general" details on the two items above

LIKE

@GMail.com & Mozilla Thunderbird 45.4.0 / Windoze 10

you already KNOW the email provider = tell that

Did your sent message actually include all of those 12 attachments with those names, or was it based on some form of html template that was been broken en route?

tt2