Suggestions for software to manage an alumni group ?

Hello Lemmiverse,

I'd like some suggestions for an open source software that I can use for managing some information about a community - to manage the member information and coordinate its activities.

A couple of my friends are planning to start an alumni association for our high school batch mates. I am looking for an open source software that I can use to manage contact information, events, announcements etc. Ideally I would like the following features:

• A self serve portal - individual members should be able to update their information (contact info, location, bio, professional experience, etc) - highest priority
• Send announcements via email
• Track upcoming events (least priority)

I realize there might not be a single tool that can do all of these, so I'm open to multiple suggestion.

I've found Mobilizon, but it seems to lack the option where members can categorically provide additional information about themselves.