You can configure SeaMonkey to launch several of its features at start-up, that is, the:
- The mail-client
- Web Browser
- Address book
To do this:
- Open SeaMonkey
- Click on the Edit Menu > Preferences > Appearance
- In the right pane, you'll have the " When SeaMonkey starts up, open"
- Simply check the options according to your preferences and validate with the OK button.