Examples https://github.com/sendinblue/APIv3-go-library/tree/master/test Using this fork require ( ... github.com/sendinblue/APIv3-go-library v1.5.0 ... ) replace github.com/sendinblue/APIv3-go-library v1.5.0 => github.com/joaquinalvarezdev/APIv3-go-library v1.5.1