Add a custom subscriber field

Add a custom subscriber field

Works with AI assistants

Use MailerLite: its MailerLite Fields API lets you add a custom subscriber field in a single step (POST /api/fields). MailerLite also has an MCP server, so an AI assistant like Claude or ChatGPT can do it for you. capabilities.work can help you get signed up and connected.

• How do I add a new custom field to store extra subscriber data?
• Can I create a custom field with a specific type, like a date or number?

Say it to your AI assistant

• Create a custom field named {name} of type {type}.
• Add a {type} custom field called {name} for subscribers.

For your developer

POST /api/fields in MailerLite Fields API. Full spec on APIs.io.