
Service and maintenance contracts are one of the best ways to grow predictable recurring revenue. But for most companies, the admin behind them cancels out the margin. Here’s what that looks like in practice.
Every contract renewal means someone has to manually create the invoice, check the details, and send it out on time. Miss one, send it late, or forget a renewal date, and your cash flow takes the hit.
Sending an invoice is one thing. Getting paid on time is another. Chasing accounts by email, calling clients, and reconciling late payments takes time that should be going into actual work.
Paper contracts, emailed PDFs, manually tracked renewals. There is no central system, no audit trail, and no easy way to know which contracts are active, expiring, or overdue for review.
OpusFlow’s built-in billing engine automatically generates invoices for every active contract that’s due. No one needs to trigger it, check a calendar, or remember a renewal. It just runs.
When your customer signs, they also authorize a SEPA Direct Debit mandate via Mollie. When an invoice is due, the payment is collected automatically. No reminders, no follow-ups, no awkward calls.
Every contract goes out as a secure digital link, gets signed from any device, and lands straight in OpusFlow. Your team always knows what is active, what is coming up, and what has been paid.
Service and maintenance contracts are one of the best ways to grow predictable recurring revenue. But for most companies, the admin behind them cancels out the margin. Here’s what that looks like in practice.
Every contract renewal means someone has to manually create the invoice, check the details, and send it out on time. Miss one, send it late, or forget a renewal date, and your cash flow takes the hit.
OpusFlow’s built-in billing engine automatically generates invoices for every active contract that’s due. No one needs to trigger it, check a calendar, or remember a renewal. It just runs.
Sending an invoice is one thing. Getting paid on time is another. Chasing accounts by email, calling clients, and reconciling late payments takes time that should be going into actual work.
When your customer signs, they also authorize a SEPA Direct Debit mandate via Mollie. When an invoice is due, the payment is collected automatically. No reminders, no follow-ups, no awkward calls.
Paper contracts, emailed PDFs, manually tracked renewals. There is no central system, no audit trail, and no easy way to know which contracts are active, expiring, or overdue for review.
Every contract goes out as a secure digital link, gets signed from any device, and lands straight in OpusFlow. Your team always knows what is active, what is coming up, and what has been paid.













Contract Types let you pre-configure pricing, billing frequency, and contract duration once. When your team creates a new contract, they select the type and the details fill in automatically. Less manual input, fewer mistakes, and a consistent process across the whole team.

OpusFlow connects natively with Google Workspace, Microsoft 365, Exact, Mollie, and more, so your team hits the ground running, not starting over.
Dry Run mode lets you simulate a full billing run before anything is triggered. You see exactly which invoices would be generated for which contracts, with no risk of sending anything prematurely. Built-in safeguards also make sure a customer is never billed twice for the same period.

No post, no PDF attachments, no printing. Customers receive a secure magic link by email, review the contract on their phone or laptop, sign digitally, and authorize their payment mandate all in one step. No account or password required.

Everything you want to know before booking a demo.
The customer portal is a branded, self-service environment where your customers can track their installation progress, access documents, view appointment dates, and submit service requests — without needing to call or email your team. It’s available 24/7 and runs directly from OpusFlow, so everything your customer sees is always up to date.
When a contract is ready to send, the customer receives a secure magic link by email. They can open it on any device, review the contract, sign digitally, and authorise their payment mandate — all without creating an account or needing a password. The whole process is designed to be as frictionless as possible so that signing does not become a reason for delay.
OpusFlow lets you create service and maintenance contracts, send them to customers for digital signature, and then automate the entire billing cycle that follows. Once a contract is active, invoices generate and payments are collected on the schedule you define — without anyone on your team needing to trigger it manually. It is designed to turn one-off installation projects into predictable, recurring revenue without adding to your team’s workload.
Yes. OpusFlow includes a Dry Run mode that simulates a billing run without actually generating or sending any invoices. You can use it to verify that contracts are configured correctly and that the right amounts will be charged on the right dates before committing to a live run. It is the safeguard that lets you build confidence in the setup before any real money moves.
OpusFlow runs a billing engine every night that checks all active contracts and automatically generates invoices for any that are due. There is no manual step required and no risk of a billing run being forgotten because someone was on holiday. The system also includes built-in safeguards that prevent a customer from ever being billed twice for the same period.
Yes. OpusFlow uses reusable Contract Types that pre-fill pricing, billing frequencies, and contract durations. When a team member creates a new contract, they start from the correct template rather than building from scratch, which means pricing is consistent, billing terms are accurate, and nothing gets missed because someone forgot to include a clause.
OpusFlow integrates directly with Mollie to handle SEPA Direct Debit payments. When a customer signs the contract, they authorise a direct debit mandate at the same time. From that point, payments are collected automatically on the billing schedule without any manual chasing, payment links, or follow-up required from your team.
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