---
title: "Use Cases"
description: "Email validation use cases for SaaS signups, newsletters, magic links, AI agents, enterprise B2B, educational platforms, and more. Real-world examples with recommended rules and implementation patterns."
keywords: "email validation use cases, saas signup validation, newsletter email validation, magic link authentication, enterprise email validation, educational platform validation, ai agent email validation, freemium email validation, b2b email validation"

robots: index, follow
permalink: /docs/guides/use-cases/

order: 2
category: Guides

layout: docs.html
---

# Use Cases

Autheona solves real email validation problems across different types of applications. Here are common scenarios where Autheona provides value.

## SaaS Signup Flows

### With Email Verification

For products that send verification emails before allowing access.

**Challenge**: Users with typos never receive verification emails. Disposable emails pollute your database.

**Solution**: Use Autheona to catch typos and block disposable domains before sending verification.

**Recommended Rules**:
- Enable Typo Detection with Suggestion Engine
- Block Disposable Domains
- MX Record Check
- Plus Addressing (allowed for Gmail users)
- Deliverability Score Enabled

**Implementation**:

```bash
curl -X POST https://api.autheona.com/v1/public/verify \
  -H "Authorization: Bearer YOUR_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "email_address": "user@gmial.com",
    "show_results": true
  }'
```

If typo detected, show suggestion to user before proceeding.

**Benefits**:
- Fewer failed verification emails
- Better email deliverability
- Cleaner user database
- Higher activation rates

### Without Email Verification

For products that provide immediate access without verification.

**Challenge**: Need stricter validation since there's no verification step. High risk of fake signups.

**Solution**: Use comprehensive validation to compensate for missing verification.

**Recommended Rules**:
- Block Disposable Domains
- Block Free Provider Domains (if B2B)
- Block Role-based Addresses
- Enable Fraud Pattern Detection
- MX Record Check
- Domain Age Signal
- Risk Scoring Enabled

**Benefits**:
- Blocks fake signups at the door
- Protects domain reputation
- Reduces free-tier abuse
- Better user quality metrics

## Newsletter Subscriptions

For email lists, content subscriptions, and marketing campaigns.

**Challenge**: Disposable emails and bounces destroy sender reputation. Role-based addresses don't engage.

**Solution**: Focus on deliverability and engagement potential.

**Recommended Rules**:
- Block Disposable Domains
- Block Role-based Addresses
- MX Record Check
- Fallback A Record Check
- Deliverability Score Enabled
- Domain Health Classification

**Implementation Pattern**:

Only accept emails with high deliverability scores. Reject emails likely to bounce.

**Benefits**:
- Maintains sender reputation
- Higher open rates
- Better engagement metrics
- Fewer spam complaints

## Magic Link Authentication

For passwordless login systems that send one-time links via email.

**Challenge**: Links must reach the inbox. Typos mean users can't log in. Disposable emails break the flow.

**Solution**: Prioritize deliverability and catch typos before sending links.

**Recommended Rules**:
- Block Disposable Domains (critical - links won't work)
- Enable Typo Detection with Suggestion Engine
- MX Record Check
- Deliverability Score Enabled
- Fraud Pattern Detection with Soft Warning Mode

**Implementation**:

Before sending magic link, validate with `show_results: true` to check deliverability score. Only send if score is above threshold.

**Benefits**:
- Magic links actually arrive
- Users don't get locked out
- Better login success rates
- Reduced support tickets

## Enterprise B2B Platforms

For business tools requiring corporate email addresses.

**Challenge**: Need to block personal emails while allowing legitimate business domains.

**Solution**: Strict corporate email validation.

**Recommended Rules**:
- Block Free Provider Domains
- Block Disposable Domains
- Block Role-based Addresses
- MX Record Check
- Domain Health Classification
- Plus Addressing (allowed)

**Optional**: Use Specific Domains Only for partner portals or invite-only systems.

**Benefits**:
- Ensures business users only
- Better lead quality
- Professional user base
- Accurate company attribution

## Educational Platforms

For platforms restricted to students, teachers, or educational institutions.

**Challenge**: Verify users are affiliated with educational institutions.

**Solution**: Restrict to educational domains only.

**Recommended Rules**:
- Educational Domains Only
- Block Role-based Addresses
- MX Record Check
- Enable Risk Score

**Optional**: Use Custom Educational Domains to add institutions not in the built-in list.

**Benefits**:
- Verifies educational affiliation
- Protects student-only features
- Maintains platform integrity
- Enables educational pricing

## AI Agents and Chatbots

For AI assistants that interact with users via email or need to validate contact information.

**Challenge**: AI needs to validate user-provided emails without manual review. Can't afford high false positive rates.

**Solution**: Use comprehensive validation with soft warnings for AI decision-making.

**Recommended Rules**:
- Block Disposable Domains
- Enable Typo Detection with Suggestion Engine
- Fraud Pattern Detection with Soft Warning Mode
- MX Record Check
- Risk Scoring with Breakdown

**Implementation**:

Use `show_results: true` and `risk_score` to help AI make intelligent decisions. Parse `suggestions` array for typo corrections.

**Benefits**:
- AI can validate emails autonomously
- Provides correction suggestions
- Risk scores help AI prioritize
- Reduces need for human review

## Internal Tools and Admin Panels

For company internal tools and admin systems.

**Challenge**: Only allow company employees and specific partners.

**Solution**: Whitelist specific domains only.

**Recommended Rules**:
- Only Use Specific Domains (enabled)
- Specific Domains Only: `company.com`, `partner.com`
- Block Role-based Addresses
- MX Record Check

**Benefits**:
- Restricts access to authorized domains
- Prevents unauthorized signups
- Simple to manage
- Clear security boundary

## Government Portals

For platforms restricted to government employees or contractors.

**Challenge**: Verify government affiliation.

**Solution**: Restrict to government domains only.

**Recommended Rules**:
- Government Domains Only
- Block Role-based Addresses
- MX Record Check

**Optional**: Use Custom Government Domains for international or state/local domains.

**Benefits**:
- Verifies government affiliation
- Maintains compliance
- Protects sensitive systems

## Freemium Products

For products with free tiers that face abuse.

**Challenge**: Bots and abusers create multiple accounts with disposable emails to exploit free tier.

**Solution**: Aggressive fraud detection and disposable blocking.

**Recommended Rules**:
- Block Disposable Domains
- Enable Fraud Pattern Detection
- Domain Age Signal
- Random Subdomain Signal
- UUID Subdomain Risk Signal
- Risk Scoring Enabled

**Implementation**:

Monitor risk scores. Flag or rate-limit high-risk signups. Consider additional verification for risky accounts.

**Benefits**:
- Reduces free-tier abuse
- Protects resources
- Better cost control
- Real users get better service

## Multi-tenant SaaS

For platforms where each tenant has their own users.

**Challenge**: Each tenant has different validation needs.

**Solution**: Create separate projects per tenant with custom rules.

**Recommended Approach**:
- One production project per major tenant
- Configure rules per tenant requirements
- Use Specific Domains Only for enterprise tenants
- Standard rules for self-serve tenants

**Benefits**:
- Customized validation per tenant
- Separate analytics per tenant
- Flexible configuration
- Scales with growth

## API Integrations

For platforms that integrate email validation into existing workflows.

**Challenge**: Need to validate emails from various sources (forms, imports, API calls).

**Solution**: Use soft checks for bulk operations, full checks for critical flows.

**Implementation Pattern**:

- Critical signups: `soft_check: false`, `show_results: true`
- Bulk imports: `soft_check: true` (faster, less storage)
- Background jobs: `soft_check: true`
- Real-time forms: `soft_check: false`

**Benefits**:

- Flexible integration
- Performance optimization
- Cost control
- Appropriate validation per context

## Choosing Your Use Case

**High Deliverability Priority** - Newsletter, Magic Link

- Focus on MX checks, deliverability scores, typo detection

**High Security Priority** - B2B SaaS, Freemium Products

- Focus on fraud detection, disposable blocking, risk scoring

**Access Control Priority** - Enterprise, Educational, Government

- Focus on domain restrictions, specific domains lists

**User Experience Priority** - Consumer Apps with Verification

- Focus on typo suggestions, soft warnings, plus addressing

## Combining Use Cases

Many products need multiple strategies:

- **B2B SaaS with Newsletter**: Use strict rules for signup, relaxed rules for newsletter
- **Freemium with Magic Link**: Combine fraud detection with deliverability focus
- **Enterprise with Partners**: Use domain whitelist with custom educational/government lists

Create separate projects for different use cases within your product.