You can open your messages from Gmail in other mail clients that support POP, like Microsoft Outlook.
Step 1: Make sure POP is the best way to read your emails
IMAP and POP are both ways to read your Gmail messages in other email clients.
IMAP can be used across multiple devices. Emails are synced in real time.
POP can only be used for a single computer. Emails aren’t synced in real time. Instead, they’re downloaded and you decide how often you want to download new emails.