Think about the last role you filled.
One person got the job. But you probably spoke to eight or nine good people to get there. Two of them were nearly as good as the one you placed. They were qualified. They were interested. They just were not the one.
Where are those two people now?
For most agencies, the honest answer is: in the database somewhere, never looked at again. And that is expensive, because they are the cheapest candidates you will ever have.
Why the runner-up is worth so much
You have already done the hard part with these people.
You know what they do. You have read their CV. You have spoken to them, so you know what they are like and what they want. You know their notice period and roughly what they cost. A client has already looked at them and said they were close.
Compare that to a cold candidate. You have to find them, reach them, convince them to talk, and only then find out whether any of it fits.
The runner-up costs you a phone call. The cold candidate costs you a week.
Why it does not happen
Nobody decides to waste these people. Three things get in the way.
The role is over. When a job closes, everyone moves to the next one. The candidates attached to the old role stop being anyone's job.
Nobody searches first. A new role comes in and the instinct is to go and find people. Posting the job and opening LinkedIn feels like progress. Searching your own database feels like admitting you have not got anyone.
The records are a mess. If the same person exists three times, once from an email, once from a job board and once typed in by hand, no search will find them properly. People stop trusting the database, so they stop using it, so it gets worse.
Search your own list first
Make it a rule: before anyone sources for a new role, someone searches the database.
It takes ten minutes. Sometimes you find nothing and you source as normal, and you have lost ten minutes. Sometimes you find three people you spoke to in March who fit exactly, and you send a shortlist the same afternoon while other agencies are still writing the advert.
The second outcome does not need to happen often to pay for the first.
Modern search helps here. You should not have to guess the keywords a candidate used on their CV. Describing the role in ordinary words and getting back the closest people from your own records is now normal, and it means the search works even when someone wrote "RN" and you searched for "registered nurse".
Keep one record per person
Searching only works if the records are clean. A few habits do most of the work.
Merge duplicates when they appear, not in a big clean-up later. Later never comes.
Write down why someone was not placed. "Client wanted more agency-side experience" is useful in a year. "Rejected" is not. When the same client comes back with a similar role, the note tells you instantly whether to put them forward again.
Record what they actually want. Not just their current job title. Someone who said in March that they wanted to move out of night shifts is a different candidate to someone who did not.
Note when you last spoke. Reaching out to someone you talked to six weeks ago is a normal follow-up. Reaching out after three years, opening with "we spoke about a role", is a cold approach wearing a costume, and it reads badly.
Ask before you keep them
This part matters more than it used to, and it is not only a legal point.
When someone gives you their CV for one role, that is what they agreed to. Keeping it for years and contacting them about unrelated jobs is a different thing. In most places you need a proper basis for that, you need to tell them plainly, and you need to let them say no and be removed.
The practical version is simple. Tell people you would like to keep their details for future roles. Let them say no easily. Delete properly when someone asks, everywhere, not just from the list you happen to be looking at. Do not keep records forever because deleting felt like losing something.
There is a business reason too. A list of people who agreed to hear from you is worth far more than a bigger list of people who did not. The first one gets replies.
A reasonable rhythm
You do not need a marketing programme. Something like this is enough:
- When a role closes, note why each shortlisted person was not chosen, and ask the near-misses if you can keep them in mind.
- Every month, look at the people you spoke to but did not place in the last quarter. Send a short, real message to anyone whose situation might have changed.
- When a new role opens, search your own records before sourcing. Every time.
- Once a quarter, remove people who have gone quiet for years and never asked to hear from you. A smaller list you trust beats a big one you do not.
The point
Agencies talk about candidate pools as if they are assets. Most of them are storage.
The difference is not the software. It is whether anyone looks in there before they go looking outside. The people you did not place last quarter already know who you are and already liked one of your roles. That is a better starting position than any advert will give you.
Start with the runners-up. They were nearly right once.