Washington, D.C.-based Contactually, which makes a lightweight CRM tool for email, is today announcing it has just closed on a $1 million seed-funding round led by SaaS backers Point Nine as well as Boston Seed, with participation from previous investor 500 Startups and other angels. The company is also announcing the public debut of its new API, which allows third-party developers to integrate contact information, plus email and social media history directly into their apps. Contactually’s service supports any IMAP-connected account, including Gmail, Google Apps, Yahoo, Aol, and others, as well as Microsoft Exchange.