Unified Invoice vs Email Best Practices

Unified Invoice

By ClawHub Community

Generate Korean quotes, tax invoices, and freelancer invoices with automatic calculations.

Email Best Practices

By Resend

Build reliable, compliant email features that reach inboxes, not spam folders.

Unified Invoice

• Creates Korean-style quotes and tax invoices with automatic VAT calculation (10%)
• Generates freelancer invoices in multiple languages and currencies (KRW, USD, EUR)
• Manages client database with business registration numbers and contact details
• Stores frequently used items and pricing for quick invoice generation
• Converts invoices to PDF format automatically

Email Best Practices

• Guides you through setting up email authentication (SPF/DKIM/DMARC) to prevent emails from going to spam
• Explains how to build compliant email capture forms with proper consent and double opt-in
• Provides a catalog of common transactional emails (password resets, confirmations, receipts) your app might need
• Helps you understand legal requirements for marketing emails (GDPR, CAN-SPAM, CASL)
• Shows you how to handle bounces, complaints, and maintain clean email lists

Reach for Unified Invoice when…

• You need to send a quote or invoice to a client in Korea with proper tax formatting
• You're a freelancer billing international clients and need professional invoices
• You want to track clients and standard pricing without complex accounting software
• You need to generate tax invoices for Korean tax filing purposes

Reach for Email Best Practices when…

• You're adding email features to your product and need to understand what emails to build
• Your emails are landing in spam and you need to fix deliverability
• You're launching a newsletter or marketing emails and need to stay compliant
• You need to set up password resets, email verification, or other user notifications