Prepare the Gmail Account for Pop3

Gmail Settings : Enable Pop3
Enable Less secure apps

https://myaccount.google.com/lesssecureapps

Prepare the TrustStore for IIB

https://www.avisi.nl/blog/2012/09/12/quick-way-to-retrieve-a-chain-of-ssl-certificates-from-a-server/

To retrieve the certificate from gmail pop server.

1	openssl s_client -host pop.gmail.com -port 995 -prexit -showcerts

Then save each of the certs as separate .cer or .pem file and import into the truststore.

Set up IIB run time env

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mqsisetdbparms TESTNODE_Rachel -n gmailtestaccount -u myemailaddress@gmail.com -p mygmailpassword

mqsisetdbparms TESTNODE_Rachel -n email::gmailtestaccount -u myemailaddress@gmail.com -p mygmailpassword

mqsichangeproperties TESTNODE_Rachel -e default -o ComIbmJVMManager -n truststoreFile -v "D:\temp\certs\localhost.truststore.jks"
mqsisetdbparms TESTNODE_Rachel -n brokerTruststore::password -u temp -p mytruststorepassword
mqsichangeproperties TESTNODE_Rachel -e default -o ComIbmJVMManager -n truststorePass -v "brokerTruststore::password"
mqsichangeproperties TESTNODE_Rachel -e default -o ComIbmJVMManager -n truststoreType -v JKS
mqsichangeproperties TESTNODE_Rachel -e default -o ComIbmJVMManager -n jvmSystemProperty -v "-Dmail.smtp.auth.enable=true -Dmail.smtp.starttls.enable=true"

to check the current configuration

1 2	mqsireportproperties TESTNODE_Rachel -o BrokerRegistry -a mqsireportproperties TESTNODE_Rachel -e default -o ComIbmJVMManager -a

Configure the IIB Email Input node

Email Server: pop3s://pop.gmail.com:995
Security Identity: gmailtestaccount

Reference Links

https://developer.ibm.com/answers/questions/210834/how-configure-email-input-node-to-receive-emails-w.html