Erro 404 Servlets

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    <servlet>
        <servlet-name>EMAIL</servlet-name>
        <servlet-class>EMAIL</servlet-class>
    </servlet>    
    <servlet>
        <servlet-name>Upload_enviando</servlet-name>
        <servlet-class>envia.Upload_enviando</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>Imagem</servlet-name>
        <servlet-class>Imagem</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>Service</servlet-name>
        <servlet-class>Service</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>geraImagem</servlet-name>
        <servlet-class>geraImagem</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>cadastraimagem1</servlet-name>
        <servlet-class>envia.cadastraimagem1</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>Upload_paraDiretorio</servlet-name>
        <servlet-class>envia.Upload_paraDiretorio</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>Diretorio_Upload_com_id</servlet-name>
        <servlet-class>envia.Diretorio_Upload_com_id</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>EMAIL</servlet-name>
        <url-pattern>/EMAIL</url-pattern>
    </servlet-mapping>  
    <servlet>
        <servlet-name>emails</servlet-name>
        <servlet-class>pacote_email.emails</servlet-class>
    </servlet>   
    <servlet>
        <servlet-name>EMAIL1</servlet-name>
        <servlet-class>EMAIL1</servlet-class>
    </servlet>
    <servlet>
        <servlet-name>ServletUpload1</servlet-name>
        <servlet-class>ServletUpload1</servlet-class>
    </servlet> 
    <servlet-mapping>
        <servlet-name>ServletUpload1</servlet-name>
        <url-pattern>/ServletUpload1</url-pattern>
    </servlet-mapping>  
    
    <servlet-mapping>
        <servlet-name>Upload_enviando</servlet-name>
        <url-pattern>/Upload_enviando</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Imagem</servlet-name>
        <url-pattern>/Imagem</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Service</servlet-name>
        <url-pattern>/Service</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>geraImagem</servlet-name>
        <url-pattern>/geraImagem</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>cadastraimagem1</servlet-name>
        <url-pattern>/cadastraimagem1</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Upload_paraDiretorio</servlet-name>
        <url-pattern>/Upload_paraDiretorio</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>Diretorio_Upload_com_id</servlet-name>
        <url-pattern>/Diretorio_Upload_com_id</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            60
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>
            index.jsp
        </welcome-file>
    </welcome-file-list>
</web-app>