Migrating Community Webmail Installations Across Supported Branches
Community administrators frequently deploy self-hosted webmail software alongside discussion platforms to manage administrative inboxes, member inquiries, and moderator notifications. When underlying software releases conclude their support lifecycles, unpatched installations expose server infrastructure to preventable hazards. Organizing an orderly transition across release cycles ensures your communication channels remain functional and safeguarded against vulnerabilities.
Step 1: Inventory Webmail Installations and Legacy Cycles
Begin by checking the current version running on your community server against the published release schedule. Tracking official release data provided in the Roundcube lifecycle data allows administrators to identify obsolete software that no longer receives maintenance.
Multiple historic cycles have concluded maintenance and should not be used in live community environments:
- Cycle 1.0 debuted on 2014-04-05, concluded maintenance, and saw its final point release, 1.0.12, on 2017-11-08.
- Cycle 1.1 arrived on 2015-02-07, concluded maintenance, and published version 1.1.12 on 2018-04-29.
- Cycle 1.2 launched on 2016-05-21, reached end of life on 2021-10-18, and issued its closing update, 1.2.13, on 2020-12-27.
- Cycle 1.3 was introduced on 2017-06-26, reached end of life on 2022-07-28, and delivered version 1.3.17 on 2021-11-12.
- Cycle 1.4 was published on 2019-11-09, reached end of life on 2023-12-10, and concluded with maintenance build 1.4.16 on 2023-12-10.
If your server still hosts any of these retired releases, an immediate migration plan is required to protect administrative accounts from known risks.
Step 2: Retire End-of-Life Deployments From the 1.5 Branch
A significant milestone for community administrators is addressing the retirement of cycle 1.5. This release train originally launched on 2021-10-18 and transitioned to long-term support on 2022-07-25, which coincided with the conclusion of its general support window. Security and maintenance updates continued through version 1.5.15, released on 2026-03-29, until the branch formally reached end of life on 2026-05-10.
Deployments still operating on cycle 1.5 receive no further vendor maintenance. Upgrading off this branch is a necessary operational step to maintain strict forum admin security, as outdated mail clients provide potential attack surfaces for malicious actors seeking server access.
Step 3: Choose Between Active Cycle 1.7 and Long-Term Support Cycle 1.6
Before modifying files on your server, determine which currently supported release branch aligns best with your maintenance policies. The project maintains distinct branches with current patch availability:
- Cycle 1.6: Originally released on 2022-07-25, this branch transitioned general support on 2026-05-10 and entered a long-term support phase running from 2026-05-10 onward without an end-of-life date assigned. Its latest maintenance package, 1.6.20, was released on 2026-10-19.
- Cycle 1.7: Originally launched on 2026-05-10, this cycle represents the active support branch. It carries active vendor support with no end-of-life designation, and its latest release, 1.7.5, was issued on 2026-10-19.
Community administrators who prioritize minimal configuration disruption can transition legacy setups to the long-term support track on cycle 1.6, while those seeking the latest feature cycle can move directly to cycle 1.7.
Step 4: Prepare Snapshots and Deploy Maintained Releases
Once you have selected your target branch, prepare your environment to prevent data loss or server configuration errors during the file replacement process:
- Follow established procedures on how to back up your forum and adjacent web properties, capturing complete copies of the webmail directory, configuration files, and database tables.
- Download the verified release archive matching your selected branch—either version 1.6.20 or version 1.7.5—both of which were published on 2026-10-19 as cataloged in the Roundcube release lifecycle API.
- Extract the archive into a staging path on the host rather than overwriting active files directly, preserving your customized configuration files and local connection parameters.
Step 5: Run Database Upgrades and Confirm Operational Stability
The final step involves executing schema migration routines and checking operational logs. Modern branches alter database structures, meaning code updates must be paired with vendor migration scripts to prevent system crashes.
After executing database schema updates, test basic administrative workflows: authenticate using community staff credentials, verify inbound folder parsing, and send a test message to validate outbound transport. Check file permissions across the installation directory to verify that temporary folders, attachment caches, and logging outputs remain isolated from unauthorized public access.
Sources
Roundcube Release Lifecycle API
Published October 30, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.