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An access control method that automatically directs users to specific documentation portals or content based on the domain of their email address (e.g., @acme.com).
An access control method that automatically directs users to specific documentation portals or content based on the domain of their email address (e.g., @acme.com).
When your team sets up email domain routing for the first time, the configuration walkthrough almost always happens in a recorded meeting or training session. An admin shares their screen, steps through the portal settings, and explains which domains map to which documentation spaces. The knowledge exists — but it's locked inside a video file that no one will realistically scrub through when a new hire needs to add a client's domain six months later.
This is where video-only approaches create real friction. Imagine your customer success team onboards a new enterprise client at @meridian-corp.com and needs to verify how their domain routing rules are configured. Searching a video timestamp is not a workflow — it's a delay. The person who ran the original session may not be available, and the recording may not even be labeled clearly enough to find.
Converting those configuration walkthroughs into structured, searchable documentation changes how your team works with email domain routing day-to-day. Instead of rewatching a 45-minute onboarding recording, anyone on your team can search for the domain, find the relevant section, and confirm the routing logic in seconds. It also gives you a living reference you can update as routing rules evolve, without scheduling another call to explain the changes.
A SaaS platform maintains both internal architecture runbooks and public-facing API documentation in the same system. Engineers accidentally share internal endpoint URLs with customers, exposing unreleased features and internal infrastructure details.
Email Domain Routing automatically detects @company.com addresses and routes them to the internal documentation portal containing architecture diagrams, unreleased feature specs, and infrastructure runbooks, while all other domains land on the sanitized public API reference.
['Configure your documentation platform (e.g., Backstage, Confluence, or GitBook) to intercept the login/SSO flow and extract the email domain before granting portal access.', 'Create two distinct documentation spaces: an internal space with full engineering content and a public space with only released API references and user guides.', 'Map @yourcompany.com to the internal space and set a wildcard rule for all unrecognized domains to fall through to the public portal.', 'Add an audit log that records which domain triggered which routing decision, enabling quarterly access reviews.']
Zero accidental exposure of unreleased feature documentation to external users, and internal engineers no longer need to navigate a separate login system — their corporate email automatically grants full access.
A platform with 15 technology partners maintains custom integration documentation for each partner, but partners frequently land on generic public docs and open support tickets asking for partner-specific setup guides, consuming 8+ hours of support time per week.
Email Domain Routing detects recognized partner email domains (e.g., @salesforce.com, @hubspot.com) and immediately routes those users to their company-specific integration portal containing pre-configured code samples, co-branded setup wizards, and partner-tier SLA documentation.
["Build a partner domain registry — a lookup table mapping each partner's email domain to their dedicated documentation space URL or content tag.", "Instrument the documentation platform's authentication webhook to query the registry on every login and inject the appropriate portal URL or content filter.", 'Create partner-specific documentation branches in your docs-as-code repository (e.g., separate directories in a Git repo) and configure the routing rules to serve the correct branch per domain.', 'Set up a fallback notification that alerts the partner success team when an unregistered domain from a known partner company attempts access, triggering a domain onboarding workflow.']
Partner-related support tickets drop by 60% within the first month, and partners report a 40% faster time-to-first-integration because they land directly on relevant, pre-configured documentation.
A defense contractor firm uses a single documentation system for both cleared employees and third-party subcontractors. Manually managing individual user permissions for 200+ rotating contractors creates administrative overhead and compliance audit failures due to stale access records.
Email Domain Routing uses the contractor firm's assigned email domains (e.g., @subcontractor-a.com, @temp-staff-agency.com) to automatically restrict access to only the project-scoped documentation namespace, preventing exposure of cross-project classified specifications without requiring per-user permission management.
["Define documentation namespaces in your platform (e.g., /project-alpha/contractor-view/) that contain only the deliverables, specs, and standards relevant to the contractor's statement of work.", "Register each subcontractor's email domain in the routing configuration, mapping it to the appropriate project namespace with read-only permissions.", 'Implement domain expiry dates in the routing rules so that when a contract ends, the domain mapping automatically deactivates without requiring manual user deprovisioning.', 'Generate a monthly compliance report from the routing engine showing which domains accessed which namespaces, satisfying audit requirements for access control documentation.']
Compliance audit prep time reduces from 3 days to 4 hours because access boundaries are enforced at the domain level with automatic audit trails, and zero contractor access violations are recorded post-implementation.
A hardware manufacturer has resellers across 12 countries, each needing documentation in their local language with region-specific compliance certifications. Currently, resellers email support to request the correct documentation package, creating a 2-3 day delay in getting new resellers productive.
Email Domain Routing maps each regional reseller's corporate email domain to the appropriate localized documentation portal — @reseller-de.com routes to German-language docs with CE certification guides, while @reseller-jp.co.jp routes to Japanese docs with PSE compliance materials — eliminating the manual request process.
['Audit your reseller list and collect the primary email domain for each regional reseller organization, then categorize them by language and regulatory region.', 'Tag each documentation set in your CMS with both a language code and a regulatory region identifier, then create routing rules that match domain-to-tag combinations.', 'Build a self-service domain registration form for new resellers that triggers an automated workflow: the reseller submits their domain, it gets validated against your partner database, and the routing rule is provisioned within 1 business hour.', 'Instrument the routing layer to pass the detected domain as a metadata parameter to the documentation platform, enabling personalized welcome banners and region-specific support contact information.']
New reseller onboarding time to first documentation access drops from 2-3 days to under 1 hour, and support tickets related to 'wrong language documentation' are eliminated entirely across all 12 regions.
Store all email domain-to-portal mappings in a version-controlled configuration file (e.g., a YAML file in Git) rather than hardcoding them in application logic or storing them only in a database UI. This ensures that every change to routing rules is peer-reviewed, auditable, and reversible. A versioned registry also enables you to roll back a misconfigured domain mapping in minutes rather than hours.
Every email domain routing system must have a clearly defined default behavior for domains that do not match any configured rule. Without an explicit fallback, users with legitimate but unregistered domains may receive cryptic error messages or, worse, be silently granted access to a default portal that may contain inappropriate content. The fallback route should lead to a safe, minimal public documentation space or a self-service access request form.
Email domain routing alone identifies which organization a user belongs to, but within a large enterprise, different teams need access to different documentation subsets. A @megacorp.com engineer needs API references and architecture docs, while a @megacorp.com procurement manager needs licensing and compliance documentation. Layering role-based sub-routing on top of domain routing — using SSO group claims or job title attributes — creates a precise access model without requiring separate email domains for each department.
Routing decisions should be made before a user receives any documentation content, not after they have already loaded a page. Applying routing logic at the content layer — for example, hiding certain sections with CSS or JavaScript after the page loads — is a security anti-pattern because the underlying content is still transmitted to the browser. Enforcing routing at the authentication or SSO layer ensures that unauthorized content is never served to the client at all.
Partner contracts end, contractors complete projects, and companies get acquired — all of these events should trigger the removal or expiration of the associated email domain routing rule. Without a formal offboarding process, former partners and contractors retain documentation access indefinitely, creating both security risks and compliance violations. Building expiry dates directly into routing rules automates this lifecycle management and reduces the administrative burden of manual access reviews.
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