Set the email to address
Each added email addresses appends to any addresses already supplied, unless you specify NULL as the email address, in which case it clears them all.
// basic usage $m->to(); // usage with all arguments $m->to($email = null, string $name = null);
|string, array, null|
Specify any ONE of the following:
Optionally provide a TO name, applicable only when specifying #1 (single email) for the first argument.
Object instance it was called from (method supports fluent interface).
Method can throw exceptions on error:
WireException- if any provided emails were invalid or in blacklist
API reference based on ProcessWire core version 3.0.137