issue with mailR in R , either Java jdk1.8.0_281.jdk or jdk-15.0.2.jdk, R version 4.0.3 RStudio Version 1.4.1103

[15538]

on MacOS Catalina 10.15.7 R version 4.0.3 RStudio Version 1.4.1103 :

install_github("rpremraj/mailR") Downloading GitHub repo rpremraj/mailR@HEAD ✓ checking for file ‘/private/var/folders/n1/5byp3w956jnf42mcq5_dt_th0000gp/T/RtmpUimtkx/remotes693662f1b428/rpremraj-mailR-4c119d0/DESCRIPTION’ ... ─ preparing ‘mailR’: ✓ checking DESCRIPTION meta-information ... ─ checking for LF line-endings in source and make files and shell scripts ─ checking for empty or unneeded directories ─ building ‘mailR_0.6.tar.gz’

Installing package into ‘/Users/brunochevallier/PEM/Shiny/renv/library/R-4.0/x86_64-apple-darwin17.0’ (as ‘lib’ is unspecified)

• installing source package ‘mailR’ ... using staged installation R inst byte-compile and prepare package for lazy loading ** help * installing help indices building package indices testing if installed package can be loaded from temporary location testing if installed package can be loaded from final location ** testing if installed package keeps a record of temporary installation path
• DONE (mailR)

library(mailR) send.mail(from = "**@protonmail.com",

• to = "****@gmail.com",
• subject = "Test email subject",
• body = "Test emails body",
• smtp = list(host.name = "127.0.0.1", port = 1025,
• user.name = "***",
• passwd = "***", ssl = TRUE),
• authenticate = TRUE,
• send = TRUE)

results in this message

java.lang.NoClassDefFoundError: javax/activation/DataHandler

with either Java jdk1.8.0_281.jdk or jdk-15.0.2.jdk

I have been hanging with this for 2 days , have you any clue ?

Thanks !

Bruno

[15538]

got it ! added the following Java apps activation.jar mail.jar additional.jar into the lib folder.