Best "newsletter" plugin?

Each week I get an html email from my daughter’s school called “Quicknews”…you can view it in the email, or click to view the html page (first link below). Is there a software for WP comparable to this, which could plug posts or other info into a subscribable newsletter?

http://campaign.r20.constantcontact.com/render?llr=ndlvr5bab&v=001-QFdcTMJj28AJrl__CYxL3CgwAm3qJu4J-AxlWklgIz19FHK2Bl6mIB6ORN0_fOvBcAojUXDzSprJeDyjTe6JKgUIK67R0TVX88HpzDZCah67Ly_Crw85Hxhpo7FZ6Zzw0_XhVpXg_bpt5L86H8USCiJKSgrf-vpg_hoMuuGbvOQci5M5ogpgNiXtxnhiQoB13hx48sBLaU%3D

Main Quicknews html page:
http://nixa.schoolfusion.us/modules/cms/pages.phtml?pageid=86394&sessionid=4cadc487c63c25ec8b5105c63909a8f3