Feature Feature

Sub-Address Detection

Sub-addressing allows users to create variations of an email address using the plus sign, such as [email protected]. EasyEmailAPI detects sub-addressed emails, enabling better insights and smarter segmentation.

Sub-address detection illustration

What sub-addressing means

Sub-addresses are often used to:

  • Track where an email was shared
  • Organize inboxes
  • Filter incoming messages

While valid, they can reveal useful patterns.

How EasyEmailAPI detects sub-addresses

EasyEmailAPI identifies sub-addressing during validation and returns this information as part of the result.

This allows teams to apply custom logic based on their needs.

Practical applications

Sub-address detection is useful for:

  • Marketing segmentation
  • Abuse prevention
  • Signup analysis
  • Understanding user behavior

Benefits for teams

  • Better segmentation
  • Cleaner analytics
  • More control over validation rules
  • Improved insight into signups

When to use this feature

This feature is helpful if:

  • You analyze signup behavior
  • You run experiments or campaigns
  • You want deeper email insights

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Detect sub-addresses with EasyEmailAPI

Sub-address detection, API-first integration, and real-time results.

Detect sub-addresses Smarter segmentation and insights.