You need your mailbox password and these settings:

Outlook on Windows or Mac

1. Go to Settings (gear icon) → Accounts → Add account. In older Outlook: File → Add Account.
2. Type your email address. If Outlook asks, choose IMAP (in older Outlook, click Advanced options → Let me set up my account manually → IMAP).
3. Enter your password and the incoming and outgoing server settings above.
4. Click Continue or Connect.

Apple Mail on a Mac

1. Open Mail and choose Mail → Add Account from the menu bar.
2. Choose Other Mail Account and click Continue.
3. Enter your name, email address and password, then click Sign In.
4. If it asks for more, choose IMAP and enter mail.yourdomain.com as both the incoming and outgoing server.

Gmail on a computer (read your business email inside Gmail)

Gmail no longer collects email from other accounts on a computer, so we suggest webmail, Outlook or Apple Mail on a computer, and the Gmail app on your phone (see Setting up email on your iPhone or Android phone).