Another investment in the quick and simplified blogging space ... Posterous, a startup that lets users post multimedia entries to a blog via email, has picked up $725,000 in what it is calling a second round of angel funding, TechCrunch reports. We confirmed the amount and that Zimbra CEO Satish Dharmaraj and former Netscape CEO Eric Hahn led the round, with additional funds from XG Ventures and other private investors like Mozilla Foundation chair Mitch Kapor and Alltop’s Guy Kawasaki. SF-based Posterous was first backed by Y Combinator with a $15,000 seed round in May.

SEE ALSO: Tumblr Raises $4.5 Million Second Round; Staffs Up, Preps Premium Model

The platform is akin to Tumblr—which just raised $4.5 million in a second round—but it makes short-form blogging even easier by not requiring users to sign up before they get their first post online. Just email a file, photo, or even an MP3 to post [at] posterous.com and the service gets going; Posterous also can pull in content emailed to other sites like Twitter and Facebook, and just launched a group-blogging feature. No word on the business model yet (I haven’t seen any ads on the Posterous pages I’ve sampled), but the service has integrated with e-commerce platform Shopify.com, according to a company blog post.

Staci adds: For those interested in the tech/user side, Dave Winer spent some time under the hood.