Only you know your password. Select something that is easy to remember. Read your e-mail regularly. Do not let unread messages pile up. Delete old messages and clear your files regularly.
Old messages can take up a lot of computer space and slow the system.
Do not assume that your messages are private. Do not write anything that may be personal or incriminating. Grammar and syntax count. Use correct spelling, punctuation and grammar at all times. Afterall, your messages should represent you as favorably as possible.