HOW TO EXTRACT EMAIL ADDRESSES FROM YOUR GMAIL ACCOUNT WITHOUT ANY APP

I am going to show you a tool, a web app that parses email messages in your Gmail mailbox, finds all the email addresses in your mail and then saves them on a list in Google Sheet. You can then export the sheet as a CSV file into Google Contacts, Outlook address book, MailChimp, or any other mailing list software.

The Gmail Address extractor online app can find email addresses that are in the content of your mail message body, the email signature, the subject line and the FROM, TO, CC, BCC & Reply-To Fields of your mail messages. The Limitation is that it cannot extract emails from file attachments, and i don't see this as so much of a Limitation because it is only in 2/100 cases where you'd find email addresses in attachments.

HOW TO GO ABOUT THIS

It is a very easy and Simple proccess and YOU DON'T NEED TO INSTALL ANY SOFTWARE TO DO THIS.

Just go to
EMAIL EXTRACT PRO and sign-in to your Gmail Account. You can also sign in with your G Suite (Google Apps) account.
The Extractor, can pull email addresses from any label in your Gmail account or you can specify advanced search criteria, and email addresses would only be extracted from the results that match your search. For example, you could set the advanced search rule as from:bet9ja older_than:10d and only Bet9ja emails older than 10days will be processed.
You can extract email addresses from messages that come via form submissions, email addresses of customers that are found inside the Bet9ja and Stripe receipts, email addresses of your newsletter subscribers and so on.
If you would like to extract email addresses from all Gmail folders in one go, choose “Anywhere” in the label drop-down.
After you’ve specified the search criteria, you need to select the email fields for extraction and the destination Google Sheet where the email addresses would be saved. The sheet will automatically remove any duplicate email addresses that it may encounter during the extraction.

Immediately the addresses are in the Google Sheet, you can use filters inside sheets to exclude addresses from certain domains.
HOW ABOUT MY PRIVACY?
I know you might have already been wondering about Privacy and Security Since you are going to be performing a SIGN IN, Ok you really don't have to worry about this because the site will not even have any access to your Privacy. You Can Read Their Privacy Policy If you are not Satisfied
The app is also available as a Gmail addon in the Google Store. It works with Gmail only but if you can import your Yahoo or Outlook email message into Gmail, the addon can process them as well.