noun
carrier mail; phone company email service
Refers to the email address and service provided by a mobile carrier, distinct from web-based email like Gmail. Common in Japanese mobile contexts.
wasei-eigo (Japanese-coined English), from carrier mail
キャリアメールのアドレスを教えてください。
Please tell me your carrier email address.
最近はキャリアメールよりLINEを使う人が多い。
These days, more people use LINE than carrier email.