If you manage client websites, you're already paying for an archive. You just don't have one.

Here's an uncomfortable accounting exercise. The next time a client says you changed something on their site you didn't change, count the time it costs you. Be honest about it.

• Thirty minutes investigating: checking version history, asking the team, pulling up the page.
• Thirty to ninety minutes drafting and sending the explanation across however many emails it takes the client to either agree or grudgingly drop it.
• Sometimes an hour or two rolling back work that was actually fine, because conceding ground was cheaper than the fight.
• A small, unmeasurable amount of trust evaporating, even if you "win" the argument.

That happens, conservatively, two or three times a quarter on a typical retainer client. Across a portfolio of ten clients, you're looking at ten to fifteen of these incidents per year — and the only reason you don't notice the cost in aggregate is that the time gets distributed across email threads, internal Slack messages, and small concessions you tell yourself were the right call.

That's the bill. You're already paying it. You just haven't put it on a line item.

What you're paying for

You're paying for the privilege of having no archive. You're paying for the fact that when the client says "you moved the logo on March 14", you can't pull up March 14 and show them. You're paying because memory is the worst possible substitute for evidence, and you've delegated the only record of your work to memory.

The agencies that have an archive — a scheduled, replayable copy of every page that matters on every client site — pay something different. They pay a few pounds a month per site, plus the five minutes it takes to forward a link. In exchange, they don't have these conversations anymore. The conversation that used to take ninety minutes and erode trust takes ninety seconds and banks it.

Both groups are paying. The only question is what they're paying for.

Why this isn't obvious

The cost is invisible. "You broke my site" calls don't show up on your P&L. They're lost in the aggregate of "agency overhead", absorbed into account manager hours that get coded as billable but go to defending work rather than producing it. You can't see what you're paying for if it doesn't have a category.

The fix sounds like a vitamin. "Website change monitoring" sounds like a tool you'd nice-to-have if you had nothing better to do. Actual agency owners run on instinct and time pressure. Nice-to-haves don't survive prioritisation. So they don't buy it, and they don't notice the running cost.

The first three months feel free. When you set up an archive, you pay the subscription and get nothing back in week one. Or week three. The payoff arrives the day a client argues with you and you forward two timestamped links. That payoff is unscheduled and intermittent. Most agencies cancel before it lands.

What I'd recommend if I were running an agency

One rule: archive everything you'd hate to argue about.

Pick one of your trickier clients. Set up automated captures of their homepage, pricing page, T&Cs, privacy policy, contact page, and the top five SEO landing pages. Total: maybe ten pages. Cost: a few pounds a month. Time to set up: half a working day.

Then forget about it. Don't check the dashboard daily. Don't read the digest emails carefully. Just let it run.

The day a "you broke my site" call arrives — and it will, on this client or another — you'll have evidence. The argument will end in ninety seconds. The client will quietly think you're well organised in a way that shifts the relationship in your favour. And you'll quietly stop paying the invisible bill you didn't know you had.

The bit nobody mentions

The agencies who do this consistently don't talk about it. It's not a tactic they share at conferences. It's quietly part of how they run, and it's part of why their margins are better. It looks like luck — they don't have these client problems — but it's not luck. It's that they decided to put a line item against an invisible cost, and the line item was smaller.

You're already paying for the archive. The only question is whether you'd rather keep paying through your time, or start paying through a subscription and get most of those hours back.