Mobile App Deep Links: An Acceptance Checklist Beyond Opening a Screen
Test mobile deep links across sign-in, missing apps, expired records, account switching and safe destinations with a practical acceptance matrix.
A deep link should take an authorised user to the intended current content, with a clear fallback when the app, session or record is unavailable. Test navigation from the originating channel through sign-in and back navigation. Opening the correct screen on a developer's phone is only one acceptance case.
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Define the destination contract
List supported link types, the identifier each carries and the destination's access requirements. Keep credentials and sensitive record details out of shared URLs. A record reference identifies a target; it does not authorise access to that record.
Android's deep-link overview distinguishes ordinary deep links from verified App Links that associate an app with its website. Select the supported platform mechanism and verify the domain arrangement rather than treating every custom URL as equivalent.
Test the full entry matrix
| Starting condition | Expected result | Evidence to capture |
|---|---|---|
| App installed and signed in | Current authorised destination opens | Correct record and account |
| Session expired | Sign-in then safe continuation | Intended destination preserved |
| App not installed | Meaningful web or installation path | No broken or misleading destination |
| Record removed | Clear unavailable state | No disclosure of restricted content |
| Different account active | Appropriate account choice or denial | No cross-account data exposure |
| Link repeated | Stable navigation without repeated action | No duplicate transaction |
Include email clients, browsers and messaging apps that the intended audience actually uses. The same link can enter an app differently depending on the channel and device configuration.
Preserve context through authentication
Consider a hypothetical service request shared with an authorised colleague. If sign-in is required, preserve only a validated destination and recheck access afterwards. Do not blindly redirect to an arbitrary URL supplied in the incoming link.
After opening, retrieve current data. If the request was cancelled while the link was in transit, the app should explain that state. A link should not apply an old approval or checkout action merely because its parameters describe one.
Include navigation and support behaviour
Decide where Back takes the user and whether the destination needs a clear route to the app's main workspace. Users entering from an external message may have no existing navigation history.
Record enough diagnostic context to investigate a failed route without collecting unnecessary personal data. Distinguish an unrecognised link, unavailable record and access denial in support tooling, while showing a suitable message to the user.
Deep-link questions
Can a deep link be used as an access token?
Some carefully designed invitation flows use expiring tokens, but an ordinary record URL should not become an accidental authorisation mechanism. Design invitation access separately.
Should all links force the app to open?
Choose from the task and supported fallback. A useful public web page may be preferable where installation is unnecessary.
Add these cases to the mobile launch checklist, and review the route contract with Drema's mobile developers.
This article explains what to build, not legal advice. Rules change; confirm against the current official text before relying on it.
