Three years ago, I sat across from a CMO at a financial services firm in Manhattan. Mid-market, growing, just hired their fourth agency in five years. She had a binder open in front of her — actual binder, color tabs — and she said: "I want to know why every agency we hire goes from amazing to absent in six months."

I gave her my answer. We won the work. Two years later, that account is still active. So I'm comfortable telling the truth here.

It's not what most people think.

It isn't performance

The reflexive answer — the one every consultant and B-school case study will give you — is that the agency stopped delivering results. The shiny pitch deck didn't survive contact with reality. The first 90 days were great because everyone was paying attention; then attention drifted; then results drifted; then someone got fired.

That's not wrong. It's just not the main thing.

The main thing is more banal. The main thing is that the people who sold the work aren't the people doing the work, and the buyer figures it out around month four.

You bought the senior strategist. You got the junior account manager. You bought the founder's energy. You got the offshore production team. The work is fine. The relationship is dying.

This isn't an accusation. It's the agency business model. A senior person can't be billable on every account, so they sell, then hand off. The handoff is where the trust starts leaking, and most agencies have no system for refilling it.

What month six actually feels like

I've been the buyer too. The dynamic is always the same:

You've felt this. I've felt this. It is the universal SMB-agency arc, and it kills more agency relationships than bad performance ever has.

The thing that fixes it isn't a new framework

It's three boring practices, executed without exception. Every agency I've seen that retains accounts past 24 months does these. Every agency that doesn't, doesn't.

1. The senior person stays in the room.

Not for everything. But for the strategy review every month, and for any decision that costs more than $5,000. The buyer needs to see the brain they bought. If the senior strategist hasn't been on a call in six weeks, you've lost them. They've moved on emotionally. The renewal is dead — they just don't know it yet.

This is why we run accounts in pods of three at most, and why the lead strategist on a Purple Frog account is on every monthly review. It's not scalable in the way most agencies want it to be. That's fine. We don't want to be that kind of agency.

2. The cadence is documented and visible.

This sounds like nothing. It's everything.

The agency that loses you is the one that goes silent for two weeks and then sends a 40-slide quarterly review. The agency that keeps you is the one that publishes a Monday morning summary every week — five bullets, what shipped, what we're testing, what's coming — and never misses one. Even when the news is boring. Especially when the news is boring.

Boring weekly updates are how you build the trust that lets you have a hard conversation in month nine when something isn't working. Without the boring updates, the hard conversation just feels like surprise bad news.

3. Honesty about what isn't working — before the buyer asks.

This is the one nobody does, because it feels like admitting failure. It's actually the opposite. Telling a client "the LinkedIn campaign is underperforming, here's what we're doing about it" before they spot it themselves is the single most retention-positive move an agency can make. It tells them: we're paying attention, we're honest, and we're not going to pretend.

The buyers who fire agencies aren't the buyers who hear about problems. They're the buyers who discover problems. Big difference.

If you're an agency buyer reading this

Watch month four. That's the inflection point. If the senior person you bought is still showing up, if the cadence is still tight, if the agency is volunteering bad news instead of hiding it — you're in good hands. If two of those three have slipped, start interviewing replacements now. Don't wait for month six.

Why we built Purple Frog around this

I've run agencies. I've been the agency buyer. I've watched dozens of relationships die for exactly the reasons above, on both sides of the table. The agency model is not broken. The execution of the model is.

Purple Frog is built around the assumption that you'll fire us in six months unless we earn it every week. That's not a marketing slogan. It's how we structure the engagement: monthly strategy reviews led by the senior person who sold you, weekly written cadence updates that publish whether or not there's news, and a default to surfacing problems before you ask. We do this because if we don't, we deserve to lose the account.

If your current agency hasn't done one of these in the last 30 days, that's the conversation to have on Monday.