The usage of years old

[Attila]

Hi All,

I'm looking for the correct grammar in the below sentences.

- I don't think you'd store 4 years old mails on the server.
- I don't think you'd store 4 year-old-mails on the server.
- I don't think you'd store 4 years-old-mails on the server.

Thanks,
Attila

[Paulina]

Number 2 is fine.

[Yankee]

Number 2 is the closest, but the hyphenation is not correct. In addition, you should only make the word 'email' plural (i.e. emails). The word 'mail' is still considered to be uncountable:

- I don't think you'd store 4-year-old emails on the server.
.
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