Gmail went down few days back and there was flood of complaints for Google. To address such situation in future and keep Google services users updated, here is Google Apps Status Dashboard. It lists status of different Google services including: Gmail, Calendar, Gtalk, Docs, Spreadsheets, Google Sites, Videos etc.
Status is shown date-wise and is indicated by different symbols for: No Issues, Service Disprution, Service Outage and information available. You can click through disruption and information symbols for more details regarding that specific service non-availability. Bookmark Google Apps status dashboard to stay updated on status of different Google service. Webpage also has RSS feed link which isn’t active as of now.