This may have been done before but if not then it needs inventing:
I want my Invoices that I email to customers Animated.

A few years ago my invoicing that I email my customers was the standard 100+ Jpeg then I chopped my A4 size invoices and quotations down to 30kb or so by sending them in gif format (as anyone who can open jpeg can also open gif files). Well now I have been trying to go one step further and adding animation to my company logo so when the buyer opens the document in his email my logo will have a uber trick (but subtle) something happening to it. Kinda like the Holographic licensing seals on software packaging and such.

The Image must be a single image file (no html or email with an additional logo).
One big A4 page gif file as before but with only a tiny 40mm x 20mm logo on the top animated.

How do I do this while keeping the image size below 100kb?

Bud

Well I see Blue had a similar question with embedding images in emails.

But not quite the same as I want a single image that can be viewed instantly and anywhere and can archive-view with ACDsee.

I dont want to go pdf.

Thanks.

So right now you have a single gif that the text of your message is added to in a white field as part of the gif?

Will prolly blow the margins here.
2 frames only 178kb

You should post the logo

3 frames, colour changing 185kb

Thanky BigBuck
Actually my logo idea is much more subtle, I want to avoid being loud, I want to get as close to unnoticeable as possible, I want to flirt with watermarking through movement. For example a quick, tiny glisten flash off one corner of the logo timed about 20 seconds apart. Or a color shade shift of the logo so close its only noticed if you stare at the logo and look for any changes.

Good work though regarding what you did, also there is no law saying invoices have to be A4 size so I will reduce where I can to bring down the size.

I also have The UBER-SECRET idea for animated invoicing. In this idea I go all the way downtown and dance with Lady Subliminal herself ---
For example Put "I WANT TO BUY MORE FROM THIS COMPANY" in tiny, light grey print below the Total amount at a high speed nanosecond frame rate, that is followed by a 30 second blank frame.

He He

Well it's certainly doable. Maybe an A5 invoice with a simple ani will come in easily under 100kb. This one's 95kb

Print your invoice to PDF and insert your animated logo (Flash format), set it to play when the page is open - looks much better than a GIF version.

http://vokaris.agilityhoster.com/Invoice_anim.pdf

I'm not sure about M$ standards but, My e-mail client rejects jpegs, gifs, etc. by default. Something to do with security and virus control. I have to specifically select and d-load that sort of stuff to a new page.

why do clients receive invoices? not just as a reminder for payment. they will print it out and give it to their bookkeeping. not sure it such a low filesize will probably worsen print quality/ability.