The Mailjet API is spread under 3 versions.
The Email API is available under V3 (URL: https://api.mailjet.com/V3/). This includes all REST API resources (https://api.mailjet.com/V3/REST) and one transactional API resource - https://api.mailjet.com/V3/send.
Mailjet offers also a second transactional API under V3.1 (URL: https://api.mailjet.com/V3.1/send), which includes advanced error management.
The Content API is currently under V1 (URL: https://api.mailjet.com/v1/).
One of the main differences between the V3 and V1 versions is a change in authentication:
- V3s are using basic authentication with your public and secret API keys.
- V1 leverages a token authentication.
The URL paths for every API resource can be found in the API reference under the respective resource name.