<aside> ❗ IMPORTENT: The Chan must ALWAYS return something, if err != nil is checked for and an error is returned in the if, nil must be returned in the case of no error, since the program will wait indefinitely for an answer.

</aside>

errChan := make(chan error)
	go func() {
		err := incrementNumberOfSentEmails()
		if err != nil {
			**errChan <- err**
			return
		}
		**errChan <- nil**
	}()

	err = <-errChan // here it would break off, as it is waiting for an answer
	if err != nil {
		return err
	}