Configs and Travis.org. How to share?

Question

JavaScript

We have an API server on Node.js . The password reset feature uses the Sendgrid API to send mail.
There is no key in .env.example, respectively. It is added manually to the .env file after the project is installed.
Accordingly, all tests work locally for me, and when building a build on Travis.org, one single test fails - sending mail *rukalitsa*
Well, why not check for the environment because of one test?
Question: how to transfer the config to Travis.org bypassing the repository?

Answer 1

This is solved with travis-cli

Answer 2

https://mailtrap.io/
maybe like this?