add versioning support for mailers
add versioning support for mailers
lale-help/lale-help,jprokay/lale-help,diegoaad/lale-help,jprokay/lale-help,diegoaad/lale-help,lale-help/lale-help,diegoaad/lale-help,lale-help/lale-help,lale-help/lale-help,jprokay/lale-help,jprokay/lale-help,diegoaad/lale-help