How to Upgrade

When upgrading docker-mailserver:

1. Review Upgrade changelog for your target version.
2. Update deployment manifests in deploy/compose and deploy/kustomize for any volume or configuration changes.
3. Update .env for new or changed environment variables.
4. Pull new images (Docker) or update image tags (Kubernetes) and redeploy.
5. Run any version-specific steps from the changelog (e.g. changing DOVEADM_API_KEY for v7.3).

For version-by-version notes, see Upgrade changelog.