libnet-smtp-tls-butmaintained-perl 0.24-1 (armhf binary) in ubuntu bionic

 Net::SMTP::TLS::ButMaintained is a TLS and AUTH capable SMTP client which
 offers an interface that users will find familiar from Net::SMTP.
 Net::SMTP::TLS::ButMaintained implements a subset of the methods provided by
 that module, but certainly not (yet) a complete mirror image of that API.