Gmail lets you use Simple Mail Transfer Protocol (SMTP) to access third-party email clients (such as Outlook and Thunderbird) or send emails from your WordPress site. If you have an enterprise account ...

2] Less secure App access not enabled The Access to Less Secure Apps option allows older or less secure authentication methods to connect Gmail with Outlook.

Update, Sept. 30, 2024: This story, originally published Sept. 29, now includes new details of password security weaknesses. Millions of Gmail users will face new password rules designed to make using ...