How to Earn Extra Income as a Marketing Agency (Without Selling More Projects)

You wrap up each month having completed projects, satisfied clients, and a busy team… yet your revenue doesn’t always add up. The reason is simple: you rely on constantly closing new projects. It’s profitable, yes—but also exhausting and unstable.
What if you already had a way to generate recurring income within your existing client base, without selling anything new?
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The Opportunity Most Agencies Miss
Think of all the websites your agency has designed, developed, or managed over the years. What happens to them after delivery? In most cases, they remain live but without real support.
Most of your clients need their websites kept updated, secure, and running smoothly. They don’t have the time or in-house skills to do it. You do.
It’s Not About Selling More—It’s About Taking Better Care
You don’t need to create new products. You just need to structure a service around something you already know: ongoing technical care for their websites.
This can include:
- Plugin and WordPress updates
- Automated backups
- Monitoring for downtime or errors
- Basic security protection
- Support for minor issues
- A monthly report of completed tasks
All of this can be packaged as a monthly service ranging from €40 to €100 per site. Multiply that by 10 or 30 clients and the potential becomes clear.
How to Do It Without Losing Your Mind
The common concern is: “Okay, but if I have to log into every site to do this, I’ll lose money.” And that’s true—if you do it manually, it’s not scalable.
The solution is centralization. Tools like Modular DS allow you to:
- View the status of all your sites from a single dashboard
- Perform batch updates
- Configure automatic backups and receive alerts
- Create professional reports in seconds
With that, you can manage 30, 50, or more sites effortlessly through automated processes.
Start Step by Step (With What You Already Have)
- List all the clients you’ve already built a website for
- Create three simple plans (e.g., Basic, Pro, Premium)
- Define a monthly routine of tasks for each plan
- Automate as much as possible using a centralized tool
- Present your service as a trusted solution—not an optional extra
This not only increases revenue: it positions you as a responsible, professional provider. And that also attracts better projects.
How much can I charge for this kind of service?
From €40 to €150 per month, depending on the level of support and protection. Many clients see it as an investment in peace of mind.
Do I need to offer 24/7 support?
No. You can set clear schedules and conditions. What matters is having defined SLAs and setting realistic expectations.
Do I need a technical team for this?
Not necessarily. With a good management tool, you can handle most tasks without needing highly technical profiles.
What if the client doesn’t pay for a month?
Set clear terms from the beginning: for example, service suspension or limited support until payment is made.