Exception — GUJ

Oi bom dia , estou tentando tratar o seguinte erro , eu quando vou enviar um email , ele nao pode vir em branco ou em ou null, eu preciso tratar isso pra poder salvar o erro no bd ,

try{
                        Email.enviar(emailConfig);
                       
                    } catch (Exception ex) {
               Logger.getLogger(EnvioMassaServlet.class.getName()).log(Level.SEVERE, null, ex);
                    System.out.println("entrou");
            }

Quando eu boto assim ele nao entra no catch mas tbm nao aparece nenhum erro , e quando eu tento colocar outra como a do EmailException algo assim , ele da um erro
com uma mensagem assim : is never thrown in body of correspoding try statement

Alguem pode me dar um help por favor
abraços a todos

org.apache.commons.mail.EmailException: Illegal address
        at org.apache.commons.mail.Email.createInternetAddress(Email.java:541)
        at org.apache.commons.mail.Email.addTo(Email.java:653)
        at org.apache.commons.mail.Email.addTo(Email.java:636)
        at org.apache.commons.mail.Email.addTo(Email.java:618)
        at br.com.stockinfo.util.Email.enviar(Email.java:36)
        at br.com.stockinfo.emailMarketing.servlet.EnvioMassaServlet.processRequest(EnvioMassaServlet.java:99)
        at br.com.stockinfo.emailMarketing.servlet.EnvioMassaServlet.doPost(EnvioMassaServlet.java:129)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
        at java.lang.Thread.run(Thread.java:619)
Caused by: javax.mail.internet.AddressException: Illegal address in string ``''
        at javax.mail.internet.InternetAddress.<init>(InternetAddress.java:108)
        at org.apache.commons.mail.Email.createInternetAddress(Email.java:514)
        ... 20 more
org.apache.commons.mail.EmailException: Illegal address
        at org.apache.commons.mail.Email.createInternetAddress(Email.java:541)
        at org.apache.commons.mail.Email.addTo(Email.java:653)
        at org.apache.commons.mail.Email.addTo(Email.java:636)
        at org.apache.commons.mail.Email.addTo(Email.java:618)
        at br.com.stockinfo.util.Email.enviar(Email.java:36)
        at br.com.stockinfo.emailMarketing.servlet.EnvioMassaServlet.processRequest(EnvioMassaServlet.java:99)
        at br.com.stockinfo.emailMarketing.servlet.EnvioMassaServlet.doPost(EnvioMassaServlet.java:129)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
        at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
        at java.lang.Thread.run(Thread.java:619)
Caused by: javax.mail.internet.AddressException: Illegal address in string ``''
        at javax.mail.internet.InternetAddress.<init>(InternetAddress.java:108)
        at org.apache.commons.mail.Email.createInternetAddress(Email.java:514)
        ... 20 more

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