mattermost release

Mattermost v6.6 is now available

This new release includes triggers and actions on channel messages, retrospective metrics on Playbooks and the general availability of Apps Framework

Mattermost v6.6 is generally available today and includes the following new features (see changelog for more details): 

Channel: Triggers and actions

No-code automation is now being extended to Channels. Previously, this feature made it possible to configure a wide variety of automated functions triggered by the start of a Playbook run. Admins can now configure automation to execute in any channel based on certain trigger conditions without writing any code by selecting actions from a drop-down list. 

We are starting with two triggers. First, when a user joins a channel they can receive a custom welcome message and/or organize the channel into a category in the left-hand sidebar. This makes it easier to educate new members with helpful context and etiquette.

The second trigger is keyword detection within a channel. When a message containing specific keywords is detected, that can trigger a prompt message to run a particular Playbook. These triggers can be applied to routine scenarios and are also ideal for infrastructure monitoring and support escalations.

For example, third-party monitoring tools may post messages to a channel containing the keywords priority: high; this could prompt an SRE team to immediately start an incident playbook run. Similarly, a post to a support channel with the keyword VIP can notify a named account team to respond quickly.

Mattermost v6.6 - Channel Actions

Channels: New location for message actions

It’s common for users to take “Action” on a message in Mattermost and “push” it to another system — e.g., to create a Jira ticket, a GitHub issue, or a Zendesk support ticket.

We’ve moved the “Message Actions” menu to its own dedicated location to reduce the clutter from Plugins and Apps. To use this new feature, click on the new button that is displayed when you hover over a message in Mattermost.

Mattermost v6.6 - Actions menu

Playbooks: Retrospective metrics in Enterprise Edition

You can’t improve what you don’t measure. That is why Playbooks can now be configured to track up to four key metrics that indicate the performance of every run. Each metric can be a duration, dollar amount, or simply an integer to be utilized for everything from time-to-restore for service outages to qualified leads for marketing campaigns at conferences. This information is collected during the retrospective after each run and then automatically aggregated on a dashboard to easily understand average, range, and performance against targets.

This provides teams and their stakeholders the transparency to understand current performance as well as trends over time to become more effective in their most critical processes.

Mattermost v6.6 - Retrospective metrics

Connections: App Framework General Availability

The App Framework allows developers to build integrations with Mattermost that seamlessly work across Mattermost’s desktop and mobile clients, can be coded in any language developers are comfortable with, and can be hosted using serverless technology to reduce maintenance costs. 

Starting with v6.6, the App Framework will be enabled by default on all Mattermost servers. This GA release means that the App Framework API has stabilized and we welcome partners and community members to build and share their new integrations. If you’re a developer and want to get started building your first app, check out these quick-start guides with examples available in JavaScript and Go.

Thank you to our contributors

Thanks for all community contributions this month and, in particular, our v6.6 Most Valued Professional (MVP), Sayanta Banerjee, with 46 lifetime contributions. Thank you for your continued contributions, Sayanta!

Mattermost v6.6 - Contributors

AccountingMattermost, aeomin, agarciamontoro, AGMETEOR, agnivade, akkivasu, Alexnoj, amyblais, andreygolubkow, asaadmahmood, ashishbhate, AshishDhama, azigler, BenCookie95, BenLloydPearson, blocodenotas, bobertoyin, Borknab, bpodwinski, calebroseland, CeesJol, chenilim, ChristieBavelaar, cleferman, coltoneshaw, cpoile, crspeller, ct7amz, ctlaltdieliet, cwarnermm, darkonovkina, debasish4patra, devinbinnie, dipak-demansol, dontoisme, DSchalla, emdecr, emilyacook, enahum, EragonRD, erdeerdeerde, ericocesar, ewwollesen, flynbit, fromhro, furqanmlk, gabrieljackson, gbochora, glennschler, gmerz, gyeben, hannaparks, hanzei, harshilsharma63, hmhealey, htlcnn, hydeenoble, icelander, iomodo, isacikgoz, it33, jasonblais, jespino, jfrerich, jgilliam17, johndavidlugtu, johnsonbrothers, jordanafung, jpetazzo, jprusch, JtheBAB, JulienTant, julmondragon, justinegeffen, jwilander, k4awon, kaakaa, kamre, karistuck, kayazeren, KevinSJ, koox00, krmh04, kzmi, larkox, levb, lieut-data, lindy65, M-ZubairAhmed, majo, maksimatveev, marianunez, maruTA-bis5, master7, matt-w99, matthew-w, metanerd, michelengelen, mickmister, milotype, mkdbns, mkraft, Mshahidtaj, mylonsuren, nasermoein, natalie-hub, nathanaelhoun, neallred, nickmisasi, nikolaizah, Nothing23yeh, noxer, ogi-m, oh6hay, pfltdv, Phrynobatrachus, potatogim, pvev, ramirezjag00, rodcorsi, ruckc, ryoarmanda, saturninoabril, sayanta66, sbishel, sc, sibasankarnayak, sinansonmez, spirosoik, src-r-r, sri-byte, sridhar02, srkgupta, stafot, streamer45, stylianosrigas, superkkt, Szymongib, ThiefMaster, thorkemado, tilto0822, tmotyl, tomaszn, TQuock, trilopin, tsabi, vadimasadchi, varghesejose2020, vish9812, VishakhaPoonia, wandersiemers, wiersgallak, wiggin77, Willyfrog, wuwinson, Zxce3

Upgrade to Mattermost Release 6.6

To upgrade your existing server to the new release, go here. Review the Important Upgrade Notes to make sure you are aware of any actions you need to take before or after upgrading from your particular version. We also created this handy reference to help guide you through the process.

If you’re new to Mattermost, register for a 30-day trial of Enterprise Edition.


Katie Wiersgalla is the Senior Product Manager at Mattermost, Inc. who has a history of driving agile transformation at software companies. Previously, she led product teams at Authenticom, Inc., holding several positions there, including VP of Product. Katie earned a bachelor's degree from Viterbo University, where she graduated magna cum laude.