💰 Track Daily Fiat & Crypto Exchange Rates Report with ExchangeRate-API & CoinGecko

A simple, reliable workflow that emails you a beautiful HTML currency report every morning at 8:00 AM (your n8n server’s timezone).
It pulls USD→EUR and USD→NGN fiat rates and BTC/ETH prices (+ 24h % change), then formats a clean HTML email.

📌 What It Does

• ⏰ Schedule: Runs daily at 8:00 AM
• 🌍 Fiat Rates: USD→EUR and USD→NGN (via ExchangeRate-API, no key needed)
• ₿ Crypto: BTC & ETH prices + 24h change (via CoinGecko, no key needed)
• ✉️ Email: Sends a mobile-friendly HTML + plain text fallback

🗺️ Node Map (At a Glance)

📝 Sticky Notes in the canvas explain each section. They’re optional and safe to delete.

⚙️ Required Setup

1) Schedule Time

• Open Daily 8AM Trigger → set cron to 08:00 daily.
  Suggested cron: 0 8 * * * (server local time; if you’re in Lagos, ensure server timezone matches Africa/Lagos or adjust accordingly).

2) SMTP Credentials

• Open Send Daily Currency Email → set:
  • From Email: your sender (e.g. [email protected])
  • To Email: recipient address
  • Credentials: select your SMTP account
• Gmail tip: use App Passwords (with 2FA enabled).
  • Server: smtp.gmail.com
  • Port: 587 (STARTTLS) or 465 (SSL)
  • Auth: your full Gmail address + app password

3) API Access

• Both endpoints are free & no API key:
  • Fiat (USD base): https://api.exchangerate-api.com/v4/latest/USD
  • Crypto (BTC/ETH): https://api.coingecko.com/api/v3/simple/price?ids=bitcoin,ethereum&vs_currencies=usd&include_24hr_change=true

🧩 Input Order

The Format Email Content node is written to auto-detect which input is fiat vs crypto, so the Merge order doesn’t matter. A clean pattern is:

• Get Crypto Prices → Merge (Input 1)
• Get Fiat Exchange Rates → Merge (Input 2)
• Merge → Format Email Content → Send Daily Currency Email

🚀 Test It Quickly

1. Run Get Fiat Exchange Rates → verify rates.EUR and rates.NGN exist.
2. Run Get Crypto Prices → verify BTC/ETH usd and usd_24h_change.
3. Run Format Email Content → check it outputs subject, html, text.
4. Run Send Daily Currency Email → confirm the styled report arrives.

🎛 Customize

• Currencies: Add more fiat codes from rates (e.g., GBP, ZAR) and extend the HTML template.
• Coins: Add ids= in CoinGecko (e.g., bitcoin,ethereum,solana) and render extra cards.
• Send time: Adjust the cron (e.g., 30 7 * * * for 7:30 AM).
• Branding: Edit colors, fonts, and header gradient in the HTML string.
• Timezone stamp: Change the display timezone inside the Code node if needed.

🧩 Common Pitfalls & Fixes

• Email not styled: Ensure the Email node is set to HTML format.
• Gmail auth fails: Use an App Password and port 587 with STARTTLS.
• Empty values: Run the two HTTP nodes once and confirm the responses contain data.
• Rate limits: If you increase frequency, consider adding a short Wait node or caching.