What you practise
Inbox Challenge is an original individual e-tray exercise set at a fictional community training provider. You choose priority windows for eight tasks and choose one structured action for each. It practises reading a brief, spotting dependencies, prioritising, delegating and communicating decisions. It does not send emails or make real bookings.
Start with the role, objectives, authority and team brief. Read the whole inbox before settling your plan. A suggested practice session is around 20 minutes, but there is no running clock, time bonus or automatic submission. The fictional time stays at 09:00 while you work. Your choices record what you intend to do; actions do not execute in the simulation.
How feedback is decided
Version hc1 contains fixed messages, action feedback and accepted priority windows. No AI, written-response grading or external scoring service is involved. All eight messages need both a priority window and an action before a result can be created.
Results show two raw counts: priority windows supported by the brief, and actions that respect its constraints. Each is out of eight. Priority windows are recommendations for the main work, not a mandatory sequence or a rule against brief early acknowledgements. A flagged window is a prompt to check your use of attention. An item has a “Supported plan” label when both checks are met. We do not combine these into an employer score, percentile, pass threshold or claim about your ability. The exercise has not been psychometrically validated. Feedback describes only these offered choices under this fictional brief. There may be other defensible real-world plans.
The first window means give these first attention by 09:15, the second means main attention between 09:15 and 10:00, and the third means main work after 10:00. Every action must still meet its message’s exact deadline. A brief acknowledgement or scheduling instruction can happen earlier without changing the priority of the main work. Giving an early conditional instruction is different from sending unverified directions or committing unapproved spending.
The timing key
- Venue and delivery: give these first attention by 09:15. Both the room decision and kit booking expire then. Either checking the original room with a timed fallback or moving immediately to the confirmed backup is acceptable.
- Information, people and communication: either of the first two priority windows is accepted. You can delegate these early or after the expiring decisions. Alex checks cancellations by 09:35 when asked; catering numbers, staffing and directions to Alex are all due by 10:00. Guests must receive directions by 10:15. Sending remains conditional on a verified room and access route.
- Oversight: give this main attention in the second window and send the manager update by 09:30, after urgent commitments. The window is not an extension of the deadline.
- Sponsor request and feedback summary: schedule after 10:00. The logo decision is due at 12:00 tomorrow. The feedback review fits after the 12:30 workshop finish and before the 15:00 meeting.
There is no mandatory total order. Delegation can run alongside urgent work. Visiting messages in a particular order earns no credit and loses none.
Costs, capacity and dependencies
The loan costs £180 hire plus £40 delivery, or £220 total, leaving £30 of the £250 total authority. The £310 express option exceeds authority by £60. Buying six extra meals for £36 alongside the loan would total £256, or £6 above the limit. Separate purchases do not create separate allowances. The extra meals are also unsupported by the active list.
The loan arrives at 09:45. Add 45 minutes for setup and 15 minutes for checks: readiness at 10:45, with no buffer. The original delivery at 11:20 is after the 11:00 start. A later delivery slip must be escalated immediately. The manager is unavailable until 09:25, after the supplier’s 09:15 deadline.
Room B is already confirmed available, step-free, free of charge and large enough for all 40 guests. It is not an unverified assumption. The two guests requiring access are included in the 40. Forty active registrations come from 46 total records less six cancellations.
Mina and the venue crew handle all setup and checks, including any room move. Sam is available for reception or coordinator cover, so neither accepted staffing plan conflicts with setup. Jo cannot cover reception until 11:15 while starting the workshop at 11:00. Alex owns registration and guest communications; venue staff need totals and practical arrangements, not the full booking list.
The feedback checks each chosen action against these fixed facts. It does not simulate actions executing or silently infer that one decision repairs another. For example, a useful manager update can report an earlier mistake accurately; it does not erase that mistake. Review each item as part of one coherent plan.
Saving and sharing
Draft decisions save in this browser when storage is available and in the part of the page link after #. Keep the full page link to continue elsewhere. A browser save offers a resume button on a fresh visit; the link takes precedence when present. Opening messages is tracked only for the current visit. Your decisions are what matter for completion.
A result link contains the scenario version and structured choices. Anyone with it can see those choices. It contains no names, accounts or written replies. This tool collects no free-text responses. Standard site privacy and cookie settings still apply. Unsupported or incomplete result codes cannot produce a result. Starting again clears this tool’s saved decisions in the current browser; existing shared links still work.
Research and originality
The exercise format was informed by LSE Careers’ explanation of e-tray and in-tray exercises and the University of Kent’s assessment-centre task guidance, consulted on 10 November 2026. Their guidance emphasises understanding the role and objectives, deadlines, connected information, delegation and explaining decisions. Neither institution endorses this tool.
Harbour Skills, its staff, messages, figures and action explanations were created for this practice exercise. No employer assessment or university practice exercise has been reproduced. Careers teams may link directly to the free exercise. No account is required, and feedback is available on completion.