Using Raspbian but need a generic ubuntu solution

Requirement is simple.

I need a way to send one-line email messages from the command line.

I have set up a gmail account just for this particular Rpi3, with the address of [email protected] - Claws email client works just fine with it, using TLS and no 2FA.

So now I need to be able to send one-line mail messages from anywhere without user intervention.

Using Raspbian and Ubunntu 16.04 LTS so need a generic Linux solution.

Requirement is simple:

I need a way to send one-line email messages from the command line.

I have set up a gmail account just for this particular Rpi3, with the address of [email protected] - with no 2FA

So now I need to be able to send one-line mail messages from anywhere (including cron) without user intervention.

I also would like it to be able to send text files; basically, anything from stdin.

Using Jessie but need a generic Debian solution

Requirement is simple.

I need a way to send one-line email messages from the command line.

I have set up a gmail account just for this particular Rpi3, with the address of [email protected] - Claws email client works just fine with it, using TLS and no 2FA.

So now I need to be able to send one-line mail messages from anywhere without user intervention.

Using Raspbian but need a generic ubuntu solution

Requirement is simple.

I need a way to send one-line email messages from the command line.

I have set up a gmail account just for this particular Rpi3, with the address of [email protected] - Claws email client works just fine with it, using TLS and no 2FA.

So now I need to be able to send one-line mail messages from anywhere without user intervention.