The age-old outgoing mail font problem

I've owned many Macs for over 25 years. For the last 10 of those years, I've had a major problem with how the outgoing Mail fonts in my emails are being received and viewed by PC recipients (of whom there are quite a few in the world, as we know).

I have read forum posts, messages and threads 'til I'm blue in the face.

At first, I solved the problem by inserting a full point (period) at the beginning of my signature and then starting to type the body of the email after that full point. That got round the problem... until in one upgrade, you couldn't delete text in a signature and if I tried to delete any text in an email create by using this workaround, the text would jump around in the email in a most bizarre way.

Luckily, for Snow Leopard, I found a thread about a brilliant plugin (Universal Mailer which you can download for free or, if you don't want a copyright statement, for a very small fee at: http://noware-it.zxq.net/) which meant I could set the outgoing Mail font to Verdana 10 and, when I received a reply to that email from a PC user, my message still showing as Verdana. Success.

Now that I've installed Mountain Lion, I'm back to trying to email Verdana and, when I receive a reply to said email, my email text appears in large, bold Times Roman. It makes my carefully laid out and formatted emails look truly awful.

I'm going to try the Universal Mailer plugin again and hope it does the trick, but.......

This is no surprise to Apple, it's been happening for years. Yet no-one from Apple has ever responded to any post about it, at least none that I've ever read. Nor has this age-old problem been sorted out. If a plugin can sort it out, why can't it be sorted out within Mail by Apple themselves?

Perhaps it's about time it was put right within Mail so that we wouldn't have to find a workaround.

Please Apple?