Zapier vs custom automation.
Which should you pick?
Zapier gets simple connections live quickly. A custom build, managed for you, is for processes that need more than a trigger and an action.
Zapier is a self-serve tool that connects the cloud apps you already use. You pick a trigger, pick an action, and the job runs. For a small number of simple tasks, that's often enough. Someone on the team can build and change the zaps without waiting on a supplier.
Custom automation is different work. It is designed around a process, including the exceptions, the systems that don't have a ready-made connector, and the points where a person still has to decide. Someone builds it, monitors it and changes it when the process changes. Wanzo can set up Zapier-style connections or build and manage a custom service. Ask which process would cause real trouble if it stalled overnight. That is usually the one that should not sit on an unwatched zap.
| Factor | Zapier | Custom automation built and managed for you |
|---|---|---|
| Speed to start | You can connect two cloud apps in a short session. If the connector exists and the job is linear, a zap can be live the same day you start. | A custom build starts with mapping the process, the exceptions and the systems involved. That takes longer before anything runs, because the design comes first. |
| Process complexity | Zapier is strongest on a trigger and one or more actions. Branching, retries, human approval and messy exceptions get harder to keep tidy inside the tool. | Custom automation is built around the real process, including branches, exception queues and the steps that still need a person. The workflow matches how the work actually runs. |
| App coverage | Zapier has a large library of ready-made connectors for common cloud tools. If both apps are in that library, you avoid writing an integration from scratch. | Custom work can connect systems that have no Zapier connector, sit on your own estate, or need tighter control than a public integration allows. The build follows the systems you actually run. |
| Who maintains it | Your team owns the zaps. That is a strength if someone has the time and skill. It becomes a risk if that person leaves or the zaps are left unwatched. | A managed service keeps an operator on the workflow after launch. When a system changes or a step fails, the same team that built it is responsible for the fix. |
| How you pay | You pay Zapier for the product, usually tied to tasks and the features you switch on. Simple, low-volume connections stay cheaper than commissioning a build. | You pay a monthly retainer for a defined service. Wanzo's AI Starter starts at £495 a month, covering live automation, monitoring and support rather than a one-off build. |
| When it fails | Failures show in Zapier's own logs. Your team has to notice, diagnose and repair them. There is no supplier on the hook unless you have hired one separately. | Monitoring sits in the monthly service. If a step stalls, Wanzo is the team that sees it and fixes it, with a four-hour response commitment when a person is needed. |
When Zapier is the right call
- The work is a small set of straightforward connections between cloud apps that Zapier already supports.
- Someone on your team has the time to build, watch and change the zaps as tools update.
- Volume is modest, exceptions are rare, and a failed zap is an inconvenience rather than an operational stop.
When Custom automation built and managed for you is the right call
- The process has branches, approvals or exceptions that a simple trigger-and-action setup cannot hold.
- Nobody on the team can own the automations, so you need a supplier to monitor and repair them.
- The work includes document processing, defined agent tasks or a helpdesk, sitting on IT you want managed together.
What we’d recommend
If the job is a handful of simple connections between cloud apps, and someone internally will look after them, start with Zapier. It's faster and cheaper at that scale. Don't commission a custom build to move a form into a spreadsheet. Choose a managed custom service when the process is operational: invoices, onboarding, documents, helpdesk work, or anything with exceptions. That's the work Wanzo runs on a monthly retainer from £495. We'd recommend Zapier for small self-contained connections and custom automation for operational processes that need an owner. Wanzo can deliver either. Mixing both is normal.
Questions people ask
Is Zapier enough for a UK business?
It can be, if the work is a limited set of connections between cloud apps and someone on the team will maintain them. Zapier is a capable product for that job. It is not enough when the process has many exceptions, needs document reading, defined agent tasks or a helpdesk, or when nobody internally owns the zaps. Those cases need a managed custom service. Wanzo would start you on Zapier where it fits, and on a monthly retainer from £495 where the process cannot sit on self-serve zaps.
When should I choose custom automation over Zapier?
Choose custom automation when the process is operational, not a side connection. Typical signs include systems with no ready Zapier connector, files or invoices that need exception handling, steps that require a person's approval, or zaps that nobody on the team still understands. A managed build maps that process, including the awkward parts, then keeps it running. Wanzo delivers that on a monthly retainer from £495, and can also manage the Microsoft 365, Azure and cybersecurity the workflow sits on.
Can I use Zapier and custom automation together?
Yes. Many firms should. Use Zapier for small, self-contained connections that a named person on your team can own. Use custom automation for the processes that would hurt if they stalled. The two are not rivals in every case. They cover different jobs. Wanzo can set up or advise on Zapier-style connections, and build and manage the custom work on a monthly plan from £495. We would not move a healthy, simple zap onto a custom retainer without a reason.
How much does custom automation cost compared with Zapier?
Zapier is a product subscription, priced by Zapier according to tasks and features. We don't publish their figures here. Custom automation from Wanzo is a monthly service, not a product licence. AI Starter starts at £495 a month for live automation, monitoring and support. AI + Managed IT starts at £1,250 when you also want managed IT. A Zapier subscription will usually cost less than a managed retainer if the job is a few simple zaps. The retainer is for work that needs an owner after launch.
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