How to Enable IMAP/POP3/SMTP for Gmail Account

Step 1: Enable IMAP and/or POP3

You need to enable IMAP and/or POP3 access in the Gmail account settings before you can access email using IMAP/POP3:

1. Go to the "Settings", e.g. click on the "Gears" icon and select "Settings".
2. Click on "Forwarding and POP/IMAP".

3. Enable "IMAP Access" and/or "POP Download"

Step 2: Enable Third-Party Mail Clients

Google may block (by default) third-party (less secure) mail clients like e.g. Outlook, Thunderbird, or .

See: for details.

The page contains a link to enable "Less secure apps" in MyAccount.

You can also enable "Less secure apps" (third-party mail clients) from:
"MyAccount" > "Sign-in & security" > "Connected apps & sites" > "Allow less secure apps"

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Gmail IMAP Server

Enter the following information in the IMAP account settings of your mail client:

Server: imap.gmail.com
Encryption/Authentication: SSL
Port: 993
Username: Your Gmail email address
Password: Your account password

Gmail POP3 Server

Enter the following information in the POP account settings of your mail client:

Server: pop.gmail.com
Encryption/Authentication: SSL
Port: 995
Username: Your Gmail email address
Password: Your account password

Enter the following information in the SMTP account settings of your mail client:

Server: smtp.gmail.com
Encryption/Authentication: SSL
Port: 465

or

Server: smtp.gmail.com
Encryption/Authentication: StartTLS
Port: 587

https://www.arclab.com/en/kb/email/how-to-enable-imap-pop3-smtp-gmail-account.html