If the "autocheck" parameter is set to "false", address validation will have to be started manually (from a click on a button for example). The JavaScript code to call to start manual validation of the address is as follows:
dqemail.check();
Warning: here "dqemail" is the name of the variable in which the first call to the plugin was stored (see above). Remember to store the result of the first call in a variable because you may need it later to interact with events among others.