Skip to main content

Email Style Rules

Email style rules let you control how Fabius writes email drafts so they match your personal voice and company standards.

Overview

Style rules control various aspects of email generation:
  • Greetings and sign-offs
  • Tone and formality level
  • Sentence structure and length
  • Punctuation preferences
  • Common phrases and expressions
  • Industry-specific terminology

Accessing Email Style Rules

Manage email style rules in Emails Settings:

Types of Style Rules

Company Rules

Company-wide style rules are set by administrators and apply to all team members:
  • Ensure brand voice consistency
  • Maintain professional standards
  • Include required compliance language
  • Set organization-wide communication guidelines

Personal Rules

Individual style preferences that you can configure:
  • Override default behavior for your emails
  • Customize tone and formality
  • Add personal phrases and expressions
  • Can override company rules where permitted

Personal Overrides

You can create personal versions of company rules:
  • Keep company standards while adding personal touches
  • Adapt company rules to your specific role or accounts
  • Maintain compliance while expressing your unique voice

Creating Style Rules from Email History

Fabius can analyze your sent emails to generate high‑fidelity style guidance:

Analysis Outputs

  • Voice Snapshot: A 1–2 paragraph description of your voice
  • Email Length Directions: Guidance on how long your replies tend to be (and when they vary)
  • Detailed Style Rules: A comprehensive set of concrete patterns (greetings, punctuation, structure, phrasing, tone, etc.)

How It Works

  1. Open Emails Settings → Style Rules: https://app.fabius.io/interactions/emails/settings/style-rules
  2. Click “Generate from my emails”
  3. Choose Append (add to existing) or Replace (disable unedited AI‑generated rules and create new ones)
  4. Watch the progress modal; newly generated rules appear as personal rules
  5. Preview your overall style and adjust rules (enable/disable or edit wording)
Notes:
  • Generated rules are static (not continuously learned) and can be edited later
  • Replace mode disables only AI‑generated rules you haven’t edited; your manually created or edited rules stay intact
  • Append mode is safer when you already have useful personal rules and want to add more

Creating Manual Style Rules

You can create style rules manually to define your email writing preferences:

Rule Components

  1. Name: Descriptive rule identifier
  2. Description: What this rule accomplishes
  3. Instructions: How emails should be written
  4. Enabled/Disabled: Toggle rule on or off

Example Rules

Formal Communication Style
Name: "Professional Email Style"
Description: "Maintain formal tone in all communications"
Instructions:
- Use formal greetings (Dear Mr./Ms.)
- Avoid contractions
- Include professional sign-off
- Reference company names formally
- Maintain respectful distance
Conversational Style
Name: "Friendly Email Tone"
Description: "Warm and approachable communication style"
Instructions:
- Use first names in greetings
- Conversational, friendly tone
- Short paragraphs (2-3 sentences)
- Natural language and contractions okay
- Express enthusiasm appropriately
Note: When enabled, style rules apply to ALL generated email drafts. If you need different styles for different recipients, you’ll need to manually enable/disable rules as needed.

Managing Style Rules

Rule Priority

When multiple rules could apply:
  1. Personal rules (highest priority)
  2. Personal overrides of company rules
  3. Company rules
  4. Default Fabius behavior (lowest priority)

Editing Rules

To modify existing rules:
  1. Go to Emails Settings → Style Rules (https://app.fabius.io/interactions/emails/settings/style-rules)
  2. Click Edit next to a rule
  3. Modify the name, description, or instructions
  4. Save changes

Enabling/Disabling Rules

  • Use the toggle switch next to each rule to enable/disable
  • Disabled rules won’t affect email generation
  • Useful for testing different combinations of rules

Testing Style Rules

Preview Style

Use the Preview Style action on the Style Rules page to see how active rules shape your writing:
  1. Click “Preview Style” to generate a sample using your enabled rules
  2. Review tone, length, formatting, and phrasing
  3. Adjust rules (enable/disable or edit) and preview again

A/B Testing Approach

For important style changes:
  1. Create a duplicate rule with different instructions
  2. Test both versions over time
  3. Monitor email response rates and engagement
  4. Keep the better-performing rule

Integration with Email Generation

Style rules are applied during the draft generation process:
  1. Email Received → System processes new email
  2. Context Identified → Sender and thread information gathered
  3. Settings Loaded → Active style rules for the user are retrieved
  4. Style Rules Applied → AI receives style instructions as part of prompt
  5. Draft Generated → AI creates draft following the style guidelines

Creating Effective Style Rules

Writing Clear Instructions

  1. Be Specific: Provide clear, actionable instructions
  2. Keep It Simple: Avoid overly complex rules
  3. Use Examples: Include sample phrases or structures
  4. Test Results: Review generated drafts to ensure rules work as intended

Managing Your Rules

  1. Start Small: Create a few key rules first
  2. Review Regularly: Check if rules still match your needs
  3. Update as Needed: Modify rules when your style preferences change
  4. Coordinate with Team: Ensure personal rules align with company standards

Troubleshooting

Rules Not Applying

  1. Check Rule Status: Ensure rules are enabled on the Style Rules page
  2. Verify Context: Confirm the email is from a CRM contact and the thread is tracked

Style Rule Issues

  1. Rules Not Working: Check that rules are enabled and properly formatted
  2. Poor Results: Refine rule instructions to be more specific
  3. Missing Context: Ensure rules account for different email scenarios

Style Quality Issues

  1. Too Generic: Add more specific instructions to rules
  2. Inconsistent Results: Check for conflicting rules
  3. Wrong Tone: Review and adjust tone-related instructions
  4. Missing Context: Ensure rules account for different scenarios

Next Steps

After setting up email style rules: