IMAP Thunderbird Gmail import

Set up IMAP

Step 1: Check that IMAP is turned on

  1. On your computer, open Gmail.
  2. In the top right, click Settings Settings.
  3. Click Settings.
  4. Click the Forwarding and POP/IMAP tab.
  5. In the "IMAP access" section, select Enable IMAP.

Step 2: Set Google account  Security

  1. Go to Google Account
  2. Securuty > Less secure app access
  3. Click [Turn on access (not recommended)]
  4. Allow less secure apps: OFF -> ON

Step 2: Tunderbird settings in your email client

Try use Normal Password Authentication instead of OAuth2