I migrate mail service of my domain (websitefreetips.com) from Yahoo to Google.
I have to say google web hosting is perfect for a free service.I really like it.
Gmail – 2 gigabytes of storage and search tools that help your users find information fast. Instant messaging from right inside their accounts.
Google Talk – Users can call or send instant messages to their contacts for free ? anytime, anywhere in the world.
Google Calendar – Users can organize their schedules and share events and calendars with others.
Control Panel – Easily manage user accounts, aliases, mailing lists, and chat settings.