jodd-mail/src/main/java/jodd/mail/EmailFilter.java
public EmailFilter not(final EmailFilter emailFilter) {
		final SearchTerm searchTerm = new NotTerm(emailFilter.searchTerm);
		concat(searchTerm);
		return this;
	}
public EmailFilter not(final EmailFilter emailFilter) {
		final SearchTerm searchTerm = new NotTerm(emailFilter.searchTerm);
		concat(searchTerm);
		return this;
	}
Appends single filter as NOT.

@param emailFilter {@link EmailFilter} to append.
@return this