saisetteiyoumeeruadoresu to bakkuappukoodo wo kakuninsuru.

再設定用 means for resetting or for reconfiguration/reset use.

It breaks down like this:

• 再 = again / re-
• 設定 = setting, configuration, setup
• 用 = for use, intended for

So 再設定用メールアドレス is literally an email address for resetting. In natural English, this may be shown as something like recovery email address or reset email address, depending on the app or website.

Because 用 can directly attach to a noun to mean for the purpose of ....

So:

• 再設定用メールアドレス = email address for resetting

This is a very common compact pattern in Japanese, especially in technical, business, or UI language.

You can think of X用Y as:

• X-use Y
• Y for X

Examples:

• 子供用 = for children
• 仕事用パソコン = work computer
• 確認用コード = code for confirmation

Using の here would sound different or unnatural in this fixed style.

と connects the two nouns and means and.

Here it links:

• 再設定用メールアドレス
• バックアップコード

So the sentence is talking about both items together.

With と, the list sounds complete: these are the things being checked.

Because the two nouns joined by と form one combined object of the verb.

Structure:

• A と B を 確認する
• check A and B

So を applies to the whole phrase 再設定用メールアドレス と バックアップコード.

This is completely normal in Japanese. You do not need:

• メールアドレスを バックアップコードを 確認する

That would be unnatural here.

The dictionary form is very common in menus, buttons, headings, and app instructions.

So 確認する here can feel like:

• a neutral action label
• a menu item
• a button name
• a short instruction

In full polite sentence form, it might be:

• 再設定用メールアドレスとバックアップコードを確認してください。

But Japanese interfaces often prefer short, compact wording.

Not exactly.

確認する means something closer to:

• check
• confirm
• verify
• make sure

It usually implies checking something carefully to confirm it is correct or available.

That is different from 見る, which simply means to see or to look at.

So in this kind of security/account context, 確認する is much more natural than 見る.

Japanese often leaves out the subject when it is obvious from context.

In a UI or instruction, the understood subject is usually you. So the sentence effectively means something like:

• (You) check the recovery email address and backup code.
• Please check ...

Japanese does this all the time. If the context is clear, pronouns like you are often omitted.

Because they are loanwords based on English:

• メールアドレス = email address
• バックアップコード = backup code

Katakana is commonly used for foreign-origin words, especially in technology, software, and internet language.

This is very typical in Japanese UI text. Many tech terms are written in katakana even when a Japanese equivalent could exist.

It follows a very normal Japanese pattern:

• [object] を [verb]

More specifically:

• [再設定用メールアドレス と バックアップコード] を 確認する

Also, modifiers come before the noun in Japanese:

• 再設定用 modifies メールアドレス

So the sentence structure is very standard.

No. Normal Japanese is usually written without spaces:

• 再設定用メールアドレスとバックアップコードを確認する。

The spaced version is often used for:

• learners
• readability
• UI formatting
• text segmentation

So the spaces are not part of the grammar; they are just a visual aid.

Japanese nouns usually do not explicitly mark singular vs. plural.

So バックアップコード could mean:

• backup code
• backup codes

The exact meaning depends on context.

In many real-world security settings, backup code may refer to a set of codes, even if the Japanese noun itself does not change form.

Not with exactly the same meaning.

• と gives a complete, definite list: A and B
• や gives a partial or example list: A, B, and things like that

So here, と is the natural choice because the interface is likely specifying the exact items to check.

If you used や, it would sound less exact, which is usually not what you want in instructions.