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