A sample command-line application with an entrypoint in bin/, library code in lib/, and example unit test in test/.

It’s a basic example : how to send ical to emails. I used 2 packages:

https://pub.dev/packages/ical For calendar generation

And

https://pub.dev/packages/mailer for send to email in background

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For test app you need open project : In IDE open terminal And copy and paste the command : dart run bin/main.dart 'vita100kozz@gmail.com' '0677019164Qwe' --attach 'test.ics'

IMPORTANT!!!!!! If you want to get a message - edit login and password Gmail to your credentials: edit this 'vita100kozz@gmail.com' '0677019164Qwe'

After change you need run app:

IF ok - You will see in terminal: “Now sending using a persistent connection Message sent: “Message successfully sent.“

Open browser gmail account and check the mail.

Otherwise: “Message not sent.” In this case, you need to check the parameters you edited and try to run the command again.

FUTURE: You can import the command from a terminal to a button in your app. And can send to email in the background.