Preparation of a GMail mailbox for less secure IMAP access

Before migrating the historical data from a GSuite mailbox using the less secure access method, the  end-user has to enable the less secure apps access as given in the steps below:

1. Users should enable access for less secured apps in Gmail Account Setting
2. Users should confirm the setting in the email received from Google Support 

3. Configure Gmail for sharing or sync

Step A: End users should enable access for less secured apps in Gmail

1. Log in to to Gmail account
2. Go to Google Account > Sign in & Security option
   
3. Choose the Apps with account access option
4. Turn On the option Allow less secure apps
   

Step C: User should confirm the access

If the user receives an email from Google support with subject Review Blocked sign-in attempt, the user should be asked to do as follows:

• Open the mail
• Click Secure your account
• Skip all the steps and navigate to Disable access for less secured apps section and  turn On the Access for less secure apps

Step D: Configure Gmail for sharing or sync

IMAP sync of Gmail requires that IMAP is full enabled. And here is how to check if your Gmail has IMAP enabled:

1. Log into your Gmail account at https://mail.google.com.
2. Go to your Gmail settings and select “Forwarding and POP/IMAP” (the direct link should be https://mail.google.com/mail/u/0/#settings/fwdandpop).Please verify the following:
   1. “Enable IMAP” should be selected.
   2. “Do not limit the number of messages in an IMAP folder” should be selected.
   3. Save the above settings.
3. 
4. Go to the “Labels” tab (the direct link should be: https://mail.google.com/mail/u/0/#settings/labels).
   1. Verify that “All Mail” have “Show in IMAP” enabled.
   2. If you are syncing emails from a label or sharing a label, you need to ensure that label and all sub-labels in that label have IMAP enabled.
5.