Incorrect classification of an Invalid Email address

[BrianS85]

abc@toppan-im.co.jp is a valid email address (where "abc" is a fictitious person)

[Caitlin_M]

Hi @BrianS85. Thank you for your feedback. Our system can count this as a valid address since it is formatted properly. Examples of invalid addresses are those without a domain or contains special characters. However, this address may bounce since it is nonexistent and it can then be removed.