How do you remove Attachements in an email to email flow? - mule

Question

I was trying to remove an attachment so that my outbound email only contains the payload. I used the attachment transformer but the attchments are still being sent even if I used "*" as the filter. I have placed it on the inbound and the outbound endpoint but the attchment is still appering on the email
<remove-attachment attachmentName=""*"" doc:name="Attachment"/>
<flow name="ocr_app_testFlow">
<pop3:inbound-endpoint host="mail.awh.com.au" user="knaufack" password="ocr123" responseTimeout="10000" doc:name="POP3"/>
<logger message="#[message.inboundProperties.subject]" level="INFO" doc:name="Logger"/>
<remove-attachment attachmentName="*" doc:name="Attachment"/>
<choice doc:name="Choice">
<when expression="#[wildcard('*Succeeded*',message.inboundProperties.subject)]">
<set-variable variableName="Subject" value="#[message.inboundProperties.subject]" doc:name="Variable"/>
<set-variable variableName="Warehouse" value="#[message.inboundProperties.subject.substring(40,43)]" doc:name="Variable"/>
<set-variable variableName="Order" value="#[message.inboundProperties.subject.substring(44,51)]" doc:name="Variable"/>
</when>
<otherwise>
<set-variable variableName="Subject" value="#[message.inboundProperties.subject]" doc:name="Variable"/>
<set-variable variableName="Warehouse" value="#[message.inboundProperties.subject.substring(37,40)]" doc:name="Variable"/>
<set-variable variableName="Order" value="#[message.inboundProperties.subject.substring(41,48)]" doc:name="Variable"/>
</otherwise>
</choice>
<logger message="#[flowVars.Order] from #[flowVars.Warehouse]" level="INFO" doc:name="Logger"/>
<set-payload value="Your Order #[flowVars.Order] from #[flowVars.Warehouse] Warehouse is imported succesfully. Please Verify" doc:name="Set Payload"/>
<remove-attachment attachmentName="*" doc:name="Attachment"/>
<choice doc:name="Choice">
<when expression="#[flowVars.Warehouse == 'ROC']">
<smtp:outbound-endpoint host="mail.awh.com.au" user="tupload" password="upload123" to="tupload#awh.com.au" from="AWH_Logistics_Integration" subject="AWH OCR Process Notification" responseTimeout="10000" doc:name="ROC Warehouse"/>
</when>
<otherwise>
<smtp:outbound-endpoint host="mail.awh.com.au" user="tupload" password="upload123" to="pauldominguez#awh.com.au" from="AWH_Logistics_Integration" subject="AWH OCR Process Notification" responseTimeout="10000" doc:name="SMTP"/>
</otherwise>
</choice>
</flow>

Answer 1

Add the attached transformer class to your project.
package org.awh.pfinder;
import org.mule.transport.email.transformers.ObjectToMimeMessage;
public class RemoveAttachmentTransformer extends ObjectToMimeMessage {
public RemoveAttachmentTransformer() {
super();
setUseInboundAttachments(false);
}
}
Add an SMTP connector and set that transformer as the outbound one: