it's chock full of emoji (or "stickers," to use fb parlance), if you're into that sort of thing, and you can use it to voice-call other messenger users at no charge.
notification on your pc, web browser, or favorite xmpp program as soon as a customer contacts you.
yappy will intelligently route it back through sms, fb messenger, or the website widget.
annoying as it is to have to switch to a different app, messenger itself is fairly robust, offering easy ways to create groups and send photos, videos, and even voice clips.
easily insert bitmojis into gmail, messenger, slack, virtually anywhere you communicate on the web.