add Net::SMTP::Address

[tmtm]

To add parameters for MAIL FROM or RCPT TO:

smtp.send_message("msg", Net::STMP::Address.new("sender@example.com", size: 12345),
  Net::SMTP::Address("rcpt@example.com", notify: :success))

on SMTP

MAIL FROM:<sender@example.com> size=12345
...
RCPT TO:<rctp@example.com> notify=ssuccess

https://bugs.ruby-lang.org/issues/17047

[c960657]

In order to know which parameters can be used for a given server, the capable? method should be made public, like here.