We analyzed the best secure messaging services that will encrypt and secure your communications. Here are the top recommendations.

Going by open-source, audited, and ownership-based recommendations.

With all the praise for Signal, do be aware that supporting the Signal developers might not be the optimum choice since they are putting large blocking stones in front of what should be collaborative open source work in order to retain centralized ownership and power, especially through platform centralization and trademark lawsuit threats. See here.

Configuration steps for arch specifically aimed at Dell XPS laptops. (Though not version specific)