To get a MailerLite API key, log in to your MailerLite account.
1. Go to the Integrations page by selecting it from the left sidebar.
2. Click the Use button under MailerLite API.
3. Click Generate new token.
4. Name the token. Any name will do as long as it clarifies what the token is for. You can use “DeBounce” in this field, for instance.
5. Click Create token.
6. Select Download to save the key as a TXT file or copy the displayed key.