To find out more about MailKing by cloudHQ, click here.
To install MailKing: Email Campaigns in Gmail by cloudHQ chrome extension, click here.
To install Export Email to Google Sheets Google Workspace Add-on, click here.
To start wizard to create a campaign click here.

Here are the steps explaining how to create and send an email campaigns:

  1. Create spreadsheet with email addresses and merge tags
  2. Load the spreadsheet by clicking on Import from Google Spreadsheet
  3. Write an emai
  4. Send or schedule the campaign