In a previous article, you learned how to receive data from an external source. In this article, you learn how to send a request or data to an external source using outgoing webhooks. As you learned from the first article in this series, we already receive alerts in Mattermost when the temperature of our fridge is too high. But what if we want to send a request to our fridges to give us the current temperature?

Have you ever wondered how many active users your application can handle at the same time? If so, you’re not alone. Here at Mattermost, we’re building a highly concurrent messaging platform for team collaboration that needs to potentially serve up to several thousands of users simultaneously.

The new quality release offers many bug fixes for increased stability, as well as Mattermost Omnibus — a new method for installing and maintaining Mattermost, and a one-click experience in Team Edition to access Mattermost Enterprise features.

Mattermost is joining Red Hat, Google, and GitHub and over 130 other leading technology organizations authorized to be a Common Vulnerabilities and Exposures (CVE) Numbering Authority (CNA) by the CVE Program. The world’s most privacy-conscious enterprises and governments rely on Mattermost’s self-hosted, open source collaboration platform to keep their most vital communications safe and sovereign.

Last week, we shared an introduction on how to use incoming webhooks to integrate with Mattermost. Here’s an example of how to use them in action.

Managing the flow of information within an organization can be a daunting task even for small teams. But for large corporations, creating a communication and collaboration workflow to meet the needs of thousands of users—while meeting their standards for security and compliance—can be a huge challenge. So what does it take to maintain secure communication for tens of thousands of users?

One of the great things about Mattermost is how well it integrates with all the other systems you use. But this flexibility can make it difficult to figure out which integration to use for each purpose. This series will review the various ways Mattermost can connect to other systems to give you an idea of what is possible and when to use what method.

Mattermost and Jitsi—open source, self-hosted alternatives to Slack and Zoom—now integrate! With the Mattermost Jitsi plugin, Mattermost users can now instantly launch secure Jitsi voice, video and screen-sharing calls, either on-prem with the self-hosted Jitsi software or via the cloud with Jitsi Meet.

Some time ago, a group of Mattermost contributors sat down to think about how to improve the installation and maintenance flow of the platform. Managing a Mattermost install is quite straightforward already thanks to its binary distribution, but you still need to install and manage the different components that surround the application itself: the database, the web proxy, and the SSL certificate.

Open source companies are amazing places to work for engineers. Your work is showcased to the world through private open source companies like GitLab and HashiCorp (makers of Terraform and Vault), and through public ones like Elastic, GitHub, and RedHat—all of which have enormous impact.