Almost every employer runs the same expensive loop: advertise, gather forty applicants, hire one, and let the other thirty-nine evaporate. Three months later the same role opens and the whole cost is paid again - to reach many of the same people.
The pool you already have is the cheapest source of hires you will ever own. It is also the fastest, because those people already know what the job is.
Who is in it and what they are worth
- Runners-up. Interviewed, liked, lost to one person. Usually still interested, and rarely offended if approached properly.
- Right person, wrong moment. Notice period too long, wrong shift, moving city next month. Circumstances change and nobody follows up.
- Right person, wrong role. Applied for a supervisor post and was too junior; perfect for the associate role you are opening now.
- Former employees who left well. The highest-value group in the whole pool. They need no onboarding and they already know the difficult parts.
Keeping a pool lawfully
This is data protection territory, and getting it right is not hard:
- Say it at the time of applying. One clear sentence: we keep your application for X months so we can contact you about similar roles.
- Set a real retention period and honour it. Six to twenty-four months is normal. Delete or anonymise automatically when it expires rather than "when someone remembers".
- Make removal easy. One email address, acted on within days.
- Keep it minimal. Answers, availability and contact details - not notes you would be embarrassed to show the person.
How to reopen the conversation
The tone decides the response rate. Three rules:
- Be specific about why them. "You applied for the evening supervisor role in March and interviewed well" beats "we thought of you".
- Say what changed. A new opening, different hours, a higher rate. People need a reason the second conversation will end differently.
- Make it easy to decline. "If the timing is wrong, just say so and I will not chase" gets more honest yeses than pressure ever does.
Keep it short, send it from a person rather than a system address, and send it once.
When not to go back
If someone was rejected for a genuine reason - a hard requirement they do not hold, behaviour in the interview, a reference problem - do not re-contact them because the pool looks thin. A recycled rejection wastes their time and yours, and it does more damage to your name locally than an unfilled shift does.
The takeaway
Every campaign you run should leave you with an asset, not just a hire. Tell people you are keeping their application, keep it properly, and go back with a specific reason when the right role opens. Qwiza keeps the pool per person rather than per application, with retention and erasure handled automatically - so the next opening starts with a warm list rather than an empty one.
Hiring frontline staff?
Qwiza turns your job description into a multilingual quiz campaign on Instagram & Facebook and delivers scored, qualified candidates - 48-hour pilot target.
See how Qwiza worksFrequently asked questions
How long can I keep unsuccessful applications?
In the EU, as long as you have told the candidate and have a defensible reason - commonly six to twenty-four months for recruitment purposes. The rules that matter in practice are the ones you set yourself: state the period when they apply, delete automatically when it expires, and remove anyone who asks.
Is it awkward to contact someone I rejected?
Far less than employers assume, provided you are specific and honest. Most people take being remembered as a compliment. What causes offence is a vague mass email months later that makes it obvious nobody recalls who they are.
