Email + SMS: The Perfect Formula to Reduce Delinquency in Large Companies
Introduction
Still relying only on email or SMS to recover receivables?
In large companies, with hundreds or thousands of accounts receivable, using a single channel is no longer enough. Customer behavior has changed. Today they check their email in the morning, but respond via WhatsApp or SMS in the afternoon. So why insist on a single-focus strategy?
The answer lies in the strategic combination of Email + SMS. This formula boosts attention, creates urgency, and improves the payment rate. But it’s not just about “sending through two channels.” It’s about coordinating, automating, and personalizing.
In this article we’ll show you how to design smart collection campaigns using both channels, what mistakes to avoid, and how to measure your real impact. And of course, how Opptima helps you do it all from a single platform, with legal backing and expert technical support.
Why does combining channels improve results?
Sending a single message is no longer enough. Studies reveal that:
- The SMS open rate exceeds 90% in under 3 minutes.
- Email lets you deliver more information, but it can get lost among other emails.
- Using both channels doubles the chances of successful contact.
- Clients perceive greater seriousness and urgency when communication is constant and consistent across multiple channels.
Combining Email and SMS reinforces message recall, speeds up decisions, and conveys a professional, organized image. This is what’s known as an omnichannel collection strategy, and it’s revolutionizing receivables recovery.
Email advantages vs. SMS advantages
| Channel | Main advantages |
|---|---|
| Detailed content, the ability to attach invoices, legal validity of the send, full traceability. | |
| SMS | High open rate, immediacy, emotional urgency, no internet connection required. |
Used separately, both have strength. But combined, they achieve the perfect balance between information and immediate action. Email explains, SMS pushes. Together, they make the customer react.
How to coordinate automatic sequences between the two
It’s not about sending the same thing twice. It’s about sequencing intelligently. Here’s an effective example:
- Day 1: Email with a detailed debt summary.
- Day 2: SMS with a reminder and a direct payment button.
- Day 5: Email with new terms or a friendly reminder.
- Day 6: SMS with a legal warning or deadline.
With Opptima, you can schedule this automated logic by customer, amount, or debt type, without complex integrations.
Use cases by debt stage
| Debt stage | Recommended action |
|---|---|
| 🟢 Pre-due | Educational email + preventive SMS |
| 🟡 1 to 15 days overdue | Email with invoice + SMS with payment link |
| 🔴 More than 30 days | Legal email + SMS with penalty warning |
Each stage requires a different tone, a priority channel, and a precise message. In Opptima you can configure these rules and campaigns in minutes.
Success metrics for combined campaigns
A well-executed hybrid campaign should be measured with real indicators:
- Open rate (email and SMS)
- Clicks on payment buttons
- Effective conversion (payments made)
- Average response time
- Reduction in average delinquency time
- Total number of successful contacts
Opptima gives you a visual dashboard with all this data so you can adjust and improve each collection cycle.
Mistakes when using both channels without a strategy
Avoid these common mistakes that can ruin a good intention:
- Sending the same message through both channels without context
- Using different tones that confuse the customer
- Not coordinating timing or frequency (watch out for seeming invasive!)
- Not segmenting by debt or client type
- Not integrating your campaigns with your CRM, ERP, or legal department
A campaign without strategy isn’t just ineffective: it can damage your reputation and generate complaints.
Launch a hybrid campaign with Opptima today and start reducing your overdue receivables
Request a free demo and personalize your strategy based on your customers’ profiles.
In modern collections, speed and multichannel reach make the difference. It’s not enough to send an isolated email or SMS. The secret is to combine, automate, and measure.
Opptima gives you total control from a single platform, with technical, legal, and human backing.
Email + SMS = real results. Recover more, in less time, and with less effort.
– Make it easy. Make it with Opptima.