Issues with Font adjustments from Outlook for MAC 2011

It seems this (or a derivative of it) is not going to be anything new on here or to the wider world, but hopefully someone can help.

In a nutshell, I work from home and use Office for MAC 2011 Business Edition via an iMac. Using Outlook as the primary email, I am having issues with what and how I write out an email and how it appears to my clients when they see it or read it at their end.

Now I have seen discussions from the past about Pixels and Points, conversion etc, but having spoken to a Font expert (its his living) he has pointed out that despite not understanding how to fix it, its not a pixels and points issue.

Examples:

1.) Email sent in calibri 14 - appears in Times NR 12 to others. Spaces are either added or removed somehow, and randomly other lines may increase or decrease in size. Some copying and pasting was included within it, but formatting was checked, cleared within Text edit, then re-entered.

2.) Email sent in Arial 13 - Most of text appears ok, except for 1 or 2 lines that change to Times NR (of various sizes). In one case, only 1 letter from a line was strangely adjusted. No copying and pasting occurred in this email at all.

Most clients will be viewing these emails from a PC as opposed to MAC.

The frustration and annoyance with all this is unbelievable, and looks so unprofessional its untrue! Hence my stress and desperation to get this sorted.

Any help, even if its someone telling me that MS and Apple have stated it simply cannot be solved, would be appreciated.

Thanks,

MrCueball