Promo Code Expiry Alert System
Promo codes expiring soon? Get urgent alerts via email and Slack while tracking all details in a shared sheet.
What it does
Stop worrying about expiring promo codes; this workflow automatically monitors their deadlines and sends you urgent reminders via email and Slack before they lapse. It keeps your team aligned by calculating remaining days, categorizing urgency levels, and logging all tracking details in a shared Google Sheet so nothing slips through the cracks.
Step by step
- Configure an HTTP webhook trigger in n8n to receive incoming promo code payloads.
- Use a Set node to parse the JSON body and extract fields like expiry_date and promo_id.
- Implement IF nodes with date arithmetic to calculate days remaining and assign urgency categories.
Where the LLM does the work
- Generate dynamic email subject lines that incorporate the specific urgency level for better open rates.
- Draft personalized Slack message blocks that highlight critical codes using distinct color coding or emojis.
- Create clear error messages in the Google Sheets log when input data fails validation checks.
Watch out for
Timezone mismatches can cause incorrect urgency calculations so always normalize dates to UTC before processing.
Gmail API quotas may be exceeded during bulk alerts so implement a small delay between email sends.
Slack message formatting breaks if special characters are not escaped properly so sanitize all input strings.
Tools that fit
Webhook API Receiving promo data from external systems
The agent brief
Everything your agent needs, including the gotchas. Copy it and go.
You are helping me build the following AI agent workflow. ## Goal Promo Code Expiry Alert System: Promo codes expiring soon? Get urgent alerts via email and Slack while tracking all details in a shared sheet. ## Specification - What it does: Stop worrying about expiring promo codes; this workflow automatically monitors their deadlines and sends you urgent reminders via email and Slack before they lapse. It keeps your team aligned by calculating remaining days, categorizing urgency levels, and logging all tracking details in a shared Google Sheet so nothing slips through the cracks. - Trigger: Triggered by an event (Event · on webhook POST request) - Autonomy: Fully hands-off - Expected setup effort: about an afternoon - Tools/services involved: - n8n: Workflow orchestration and automation logic - Webhook: Receiving promo data from external systems - Google Sheets: Storing and tracking promo code details - Gmail: Sending email notifications for expiring codes - Slack: Posting urgency-based alerts to team channels ## Known pitfalls, handle each one explicitly in your implementation 1. Timezone mismatches can cause incorrect urgency calculations so always normalize dates to UTC before processing. 2. Gmail API quotas may be exceeded during bulk alerts so implement a small delay between email sends. 3. Slack message formatting breaks if special characters are not escaped properly so sanitize all input strings. ## Reference implementation https://n8n.io/workflows/15238 (workflow template) Fetch and inspect this before building. If it matches my stack, adapt it; if not, rebuild the pattern with my tools. ## Process requirements 1. Before building: ask me which of the listed tools I actually use and what my platform is (n8n / Make / code / other). Do not assume. 2. Adapt the pattern to my answers; do not force the reference stack. 3. Address every pitfall above; tell me how you handled each. 4. Provide a test plan I can run before letting this touch real data. 5. Ask before any step that sends messages, modifies data, or spends money. Source: https://usecasesforagents.com/use-case/promo-code-expiry-alert-system/ via usecasesforagents.com
Frequently asked questions
Can I use a different Automation Platform than n8n?
Yes. n8n is only the example automation platform in this recipe. The same flow works with Home Assistant. Swap the automation platform connection and keep the rest of the setup as written.
Want this running in your business?
This is what I do. I design and build AI agents like this one, and keep them running. If you want it set up for your team instead of doing it yourself, get in touch.
Who it's for
Built for marketers who'd rather brief an agent than start from a blank doc.
Also fits E-commerce Operator.