Why are my email attachments showing as being attached but the recipient does not get an attachment?

Question

I currently use the Mail program on my MacBook Pro and am having issues with email attachments. I have read through a few forums and I seem to be doing everything correctly but I am still having problems. I have 3 different email accounts that I have set up through Mail and all 3 are having problems. The steps I take when attaching any document is to compose to a new email, click the paperclip icon or go through the File drop down menu and select Attach Files. With either option, I can see my document inside of my message but when I send the email the recipient only receives the text portion of th email, not any attachment. When I go to my Sent mailbox and find the email I sent, I can see the document within the message but there is not a paperclip icon next to the recipients name indicating that there was an attachment sent.
I have made sure that 'Always send windows-friendly attachments' is selected, and I have tried sending them with 'Always attach at end of message' selected and with it unselected but there has been no difference. I have only noticed this within the last 2 months. Anyone have any advice?

Answer 1

The issue with not seeing the paper clip in your Sent mailbox seems to be totally removed from anything related to recipients, and is something to perhaps yet be addresses in a future update.
To the issue with recipients, I would guess the recipient is using Outlook or Outlook Express, and the message is being sent in Rich Text (a form of HTML) and the recipient either cannot open the attachment, or they have an over zealous anti-virus filter that is removing the attachment out of fear caused by the presence of HTML.
More info about the recipient's platform, please.
Ernie