The verdict in three sentences
Above 300 emails a day, a customer service team spends more time sorting than answering, and first response time drifts towards 24 hours. AI email triage that classifies, prioritises, extracts the order number and prepares a draft reply costs EUR 12,000 to 35,000 (about USD 14,000 to 40,000) as a project plus EUR 100 to 600 a month in usage. It brings first response down towards 2 hours and reaches about 90% accuracy after 4 weeks, provided a human approves every message sent.
What AI does with 600 emails a day
The system reads each incoming message, assigns a category, detects urgency and tone, then pulls useful data from the ERP or WMS (order status, tracking number, invoice). Here is the breakdown observed at a B2B technical supplies distributor; the pattern is identical for a New York distributor of the same size.
| Category | Share of emails | Routing | AI draft possible | Accuracy at 4 weeks |
|---|---|---|---|---|
| Order tracking and delivery | 32% | Order desk | Yes, with tracking number | 95% |
| Quote or price request | 18% | Inside sales | Partial | 91% |
| Returns, after-sales, defective product | 14% | After-sales team | Yes, with return procedure | 89% |
| Billing and payment | 12% | Accounts receivable | Yes, with invoice copy | 92% |
| Sensitive complaint | 6% | Customer relations manager | No, human handling | 86% |
| Product information | 10% | Order desk | Yes, from product sheet | 90% |
| Spam, ads, auto-replies | 8% | Archive | Not applicable | 98% |
Sensitive complaints and high-value customers are detected and pushed to the top of the queue, never handled through an automatic draft.
Cost of the options in 2026
| Option | Upfront cost | Monthly cost | Limits |
|---|---|---|---|
| Outlook or Gmail keyword rules | EUR 0 to 1,500 | EUR 0 | 60 to 70% accuracy, no data extraction |
| AI add-on in a helpdesk tool | EUR 2,000 to 6,000 setup | EUR 40 to 90 per agent per month on top of licence | Little ERP access, generic models |
| Custom AI project, triage only | EUR 12,000 to 18,000 | EUR 100 to 300 (language model, hosting) | No drafts |
| Custom AI project, triage, extraction and drafts | EUR 22,000 to 35,000 | EUR 300 to 600 | Human approval required |
Usage cost depends mainly on volume and the language model. For 600 emails a day, about 13,000 a month, allow roughly EUR 0.01 to 0.04 per email processed depending on length and model.
Before and after metrics
| Metric | Before | After 4 weeks | After 3 months |
|---|---|---|---|
| First response time | 24 h | 4 h | 2 h |
| Triage time per email | 30 s | 3 s (check) | 2 s |
| Misrouted emails | 12% | 6% | 3% |
| Replies written from an AI draft | 0% | 35% | 55% |
| Emails handled per agent per day | 75 | 95 | 110 |
| Customer satisfaction (CSAT) | 78% | 82% | 86% |
On compliance: emails contain personal data. Require a data processing agreement with the model provider, no reuse of your data for training, hosting in your required region and clear customer disclosure. In the US, check state privacy laws such as the New York SHIELD Act; in Europe, GDPR and the AI Act transparency duties apply.
Mini case study
Rachel, head of customer relations at a 120-person distributor in New York, manages 8 agents receiving 600 emails a day.
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- Manual triage: 600 × 30 s = 5 h a day
- Faster writing thanks to drafts: 300 replies × 1 min saved = 5 h a day
- Time released: 10 h × 220 days = 2,200 h a year, i.e. EUR 66,000 at EUR 30 an hour loaded
- Counting only the half actually reallocated: EUR 33,000 a year
- Investment: EUR 22,000 project plus EUR 350 a month, i.e. EUR 26,200 in year one (about USD 30,000)
- Payback: about 9 to 10 months, then EUR 4,200 a year in running costs
New York loaded hourly costs are often higher than EUR 30, which shortens the payback. These are 2026 estimates that depend on the quality of ERP data the system can access.
FAQ
Can the AI reply to customers on its own?
Technically yes, but we advise against it at launch. Automatic sending only makes sense for categories above 97% accuracy, such as acknowledgements or tracking numbers.
How long does it take to reach 90% accuracy?
About 4 weeks, using 3,000 to 5,000 labelled historical emails and agents' daily corrections.
Do we need to change our email tool?
No, the system connects to Microsoft 365, Gmail or your existing helpdesk via API. Integration accounts for 15 to 25% of the budget.
What does the AI cost if volume doubles?
Usage cost grows roughly in proportion, for example from EUR 300 to 600 a month, while the initial project stays amortised.
Is our customers' data reused?
Not if the contract says so: business offers from the major model providers exclude training on your data and offer regional hosting.
Let's scope your project. Send us an anonymised sample of 200 emails and your volumes: we define the categories, integration scope, indicative budget and go-live timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.