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
Please tell me your carrier email address.
These days, more people use LINE than carrier email.
Variant with interpunct; less common in everyday use.
Wasei-eigo from English 'carrier' + 'mail', referring specifically to the email service tied to a mobile phone contract.