Mail Chimp

MailChimp is an email marketing service that allows users to create, send, and track email campaigns.

For mail chimp or subscribe newsletter You Need Mail chimp Key. Go To: https://www.mailchimp.com/

MAILCHIMP_API_KEY=yourapikey
MAILCHIMP_LIST_ID=yourlistid

Note: All API keys are case-sensitive and don't give unwanted space before and after. After entering API Please Enable API.