MONDAY ENVELOPE: $350K to Concord, CA-based Monday Envelope in a seed round; investors were not disclosed. Founded in 2013, the company offers a communication tool that help parent-teacher associations (PTAs) manage and organize volunteering and fundraising efforts. The startup estimates there are over 80,000 groups around the U.S. that help raise $4 billion a year. FastCompany took a look at the app earlier this year.