Can not authenticate to IMAP server: [AUTHENTICATIONFAILED] Invalid credentials (Failure)

Question

When i trying to get messages from email via imap - i have this error:

Can not authenticate to IMAP server: [AUTHENTICATIONFAILED] Invalid credentials (Fa

Answer 1

If you are using G Suite, you have to contact your G Suite administrator to enable not secure access for users apps in Google Admin panel, URL like https://admin.google.com/{YOUR_DOMAIN_NAME}/AdminHome?hl=en#ServiceSettings/notab=1&service=securitysetting&subtab=lesssecureappsaccess

or go this way (for G Suite admin)

1. https://admin.google.com
2. Security settings
3. Basic settings (first link)
4. Less secure apps -> Go to settings for less secure apps
5. Enforce access to less secure apps for all users (Not Recommended)
6. Save
7. PROFIT (can take effect in 1-2 mins, wait for some time please)