A very useful integration solution, especially for websites, is the use of Http calls. They concern these types of action:
MailUp provides all the tools you need to let a visitor to your Web site or blog subscribe to a specific list using a subscription form. Such forms can be hosted by MailUp or placed directly on your Web pages. :
See the following articles for technical details on how to perform GET/POST request to the MailUp API that allow you to subscribe, update, and unsubscribe recipients.
Integrating an existing form with MailUp
- Subscribe a recipient to different lists and groups, using the “Codes table” as a reference (path: Settings > Codes table)
- Unsubscribe a recipient from a list;
- Check subscription status;
- Update a recipient's profile.