Custom CRM or an off-the-shelf one? When each makes sense

What is a CRM, and what is it for?

CRM stands for customer relationship management. In practice, it’s the place where everything you know about each customer and lead lives: who they are, what they’ve bought, what you quoted them, who handles them and when to follow up next.

If that information lives today in a salesperson’s notebook, on their personal WhatsApp or in a spreadsheet everyone fills in their own way, you already have the problem a CRM solves: follow-ups slip, nobody knows what happened to a quote and, when a salesperson leaves, their customer history leaves on their phone.

What does a CRM do day to day?

• One record per customer, with their details, purchases, quotes and every conversation.
• The sales pipeline: which stage each lead is at, from first contact to quote to closed sale.
• Follow-up reminders, so no lead goes unanswered.
• Who handles whom, with permissions so each salesperson sees their own accounts.
• Reports on how much was quoted, how much closed and why the rest was lost.

When is an off-the-shelf CRM enough?

For many companies, an off-the-shelf CRM is the best way to start. You sign up today, the pipeline, reminders and reports come ready, and you pay per user per month. We checked the official pricing pages on October 4, 2026:

• HubSpot is free for up to 2 users. Its paid plans are billed per seat per month.
• Zoho CRM is free for 3 users. In Mexican pesos, its Standard plan costs $216 per user per month billed yearly, or $324 month to month, and Professional costs $360 billed yearly or $540 month to month. Taxes are extra.

With 5 salespeople on Zoho’s Professional plan, billed yearly, you’d pay $1,800 MXN a month, or $21,600 MXN a year plus VAT. Prices can change, so check them before you decide.

One of these is enough when:

• What you need is to organize leads and follow-ups, not to connect sales with your operation.
• The way you sell looks like any other company’s: contact, quote and close.
• Your sales team is small and can work the way the software is designed.
• You don’t mind copying orders from the CRM into your order system or your invoicing by hand.

If that sounds like you, start with a free plan. It’s the cheapest way to find out what you really need.

When does a custom CRM make sense?

An off-the-shelf CRM organizes the sale. The trouble usually starts after the sale closes, when the order has to move to production, the warehouse or collections and someone types it into another system. A custom CRM makes sense when:

• Your customers are tied to your operation. Each customer has orders, production orders, reserved stock or balances, and you want to see them all in one record.
• You enter the same thing twice. A salesperson logs the sale in the CRM and someone else retypes it in the order system or in Excel.
• The way you sell is your own. Prices per customer, credit, quotes with rules specific to your industry, or sales stages no product offers.
• Follow-up happens on WhatsApp. You want messages and conversations stored in the customer record, not on each salesperson’s phone.
• You pay for licenses that barely get used. People who only look things up or enter one thing still count as a full user.

In those cases, the CRM stops being a separate program and becomes part of your system. That’s what we do in a custom ERP: customers, sales, inventory and production connected so each piece of data is entered only once.

What does a custom CRM look like in a real company?

• [Sumiplas](/en/projects/sumiplas-polymer), a plastic bag manufacturer, has a CRM that connects each customer’s requisitions to production. Requisitions, production orders, inventory and staff live in the same system, and they left their Excel files behind.
• [Ruta Tierra Adentro](/en/projects/ruta-tierra-adentro-sitio-multilingue-crecimiento-b2b), a trucking company, has a sales foundation and CRM: target accounts, a sales funnel and follow-up on every prospect, alongside a website in six languages that brought in contacts from the first week.

In both cases, customer follow-up was designed around the way each company sells, not the other way around.

Can the CRM connect to WhatsApp?

Yes, and it’s often what saves the most time. With the WhatsApp Business Platform, your system can send confirmations, reminders and follow-up messages, and save the replies in each customer’s record. That way the history stays with your company, not on a salesperson’s phone.

Keep two things in mind. Meta charges for each delivered message, depending on its type, and you can only message people who gave you their number and agreed to hear from you, as the WhatsApp Business messaging policy requires. We explain the costs in WhatsApp automation for business and what we build in WhatsApp for business.

What happens to the contacts you already have in Excel?

They move into the new system. Before we build, we review your lists, merge duplicates and agree on which data is worth keeping. At Sumiplas, the information they already had moved into the new system without losing its history.

If you use an off-the-shelf CRM today, check how you export your data before you decide. A custom system can run alongside it while your team makes the switch.

How much does a custom CRM cost?

It depends on how much it connects to your operation. As a reference, a single module such as customer follow-up starts at about $5,000 MXN, a larger project at about $15,000 MXN and a complete system at about $25,000 MXN, paid in stages. We send you the exact price in writing after the free consultation.

There’s usually no license fee for each user. What continues after delivery is hosting and maintenance, at a cost we agree on in writing, plus the WhatsApp messages Meta charges for, if you use them.

To compare it with an off-the-shelf CRM, add up what you’d pay over three years with your real number of users. With 5 users on Zoho CRM Professional, billed yearly, that’s $64,800 MXN plus VAT over three years, if the price doesn’t change. With 2 or 3 users, a free plan is hard to beat. You can run the numbers in our 3-year cost calculator, using the option for other per-user software.

We solve urgent issues within hours, and most projects are ready in about a week; large systems are delivered in stages, each with its own date in writing. We fix defects you report within 60 calendar days of each delivery at no cost, and your customers and sales history are always yours to export.

How do you decide?

1. Write down what happens after a sale closes: who enters the order, where and how many times.
2. Count the people who will use the CRM every day and the ones who only look things up.
3. Try a free plan with your team for a few weeks. If it’s enough, you’re done.
4. If you’re still entering things twice or the software doesn’t follow the way you sell, ask for a custom proposal and compare it over three years.

If you want to go over it with someone who’ll give it to you straight, book a free consultation. We review how you sell and, if an off-the-shelf CRM is the better fit, we’ll tell you. You can also see how we build sales and customer portals.