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Signature RulesGuide

Internal vs External Signature Rules

Last updated February 9, 2026

Show different signatures based on whether the recipient is internal or external.

Why Use Different Signatures?

  • External emails - Full branding, marketing banners, legal disclaimers
  • Internal emails - Simpler signature, no marketing, casual tone

Setting Up Rules

Step 1: Create Two Templates

  1. Create an External Template with full branding
  2. Create an Internal Template with minimal info

Step 2: Configure the Rule

  1. Go to Templates → Select your external template
  2. Click Rules tab
  3. Click Add Rule
  4. Set condition: Recipient Domain
  5. Choose: Is not your company domain
  6. Action: Use this template

Step 3: Set Default

  1. Go to Templates → Select your internal template
  2. Click Set as Default
  3. This template is used when no rules match

How It Works

When an employee sends an email:

  1. Siggly checks the recipient's email domain
  2. If external (not your domain) → External template
  3. If internal (your domain) → Internal/default template

Example Configuration

Company domain: acme.com

| Recipient | Template Used | |-----------|---------------| | client@customer.com | External (full branding) | | partner@vendor.com | External (full branding) | | colleague@acme.com | Internal (simple) |

Advanced Rules

Combine with other conditions:

  • Department - Sales gets promotional banners
  • Time-based - Holiday signatures during December
  • Campaign - Special signatures for product launches

Limitations

  • Rules are evaluated in order (first match wins)
  • Maximum 10 rules per template
  • Some email clients may not support dynamic switching

Testing Rules

  1. Go to TemplatesTest Rules
  2. Enter a test recipient email
  3. See which template would be applied
  4. Adjust rules as needed

Need More Help?

Our support team is here to help if you have questions.