If you want to apply conditional validation on 'Recovery Email Address' or 'Business Email Address' then you need to add this input as 'abc@gmail.com'.
{{userFormGroup.controls.emailAddress.errors.contains.message}}
If you want to apply conditional validation on 'Recovery Email Address' then you need to add 'Email Address' input as 'abc@gmail.com'.
Conditional Expression with type 'string'
{{userFormGroup.controls.recoveryEmailAddress.errors.contains.message}}
Shows custom message
{{userFormGroup.controls.otherEmailAddress.errors.contains.message}}