In short, no.
Fleep stands for productivity in communications and rich-text HTML email signatures are clutter that wastes everyone's energy.
Yes, we know that HTML email signatures have become a standard. But it's a standard we can't get behind.
Think of it this way: if you meet a person for the first time, you introduce yourself and hand them your business card. Would you hand them a business card on the second, third, tenth time you meet? Exactly.
So go ahead, add an intro, pictures and links to the first message you send out to someone - and don't waste their time with lengthy email signatures as your communication evolves.
Also, plain text email signatures are good for your karma. Trust us on this.