syuppinsya ha hassoukigen dake de naku uketorihyouka mo kakuninsimasu.

Here are the main readings:

• 出品者 → しゅっぴんしゃ
• 発送期限 → はっそうきげん
• だけでなく → usually read as written in kana
• 受取評価 → うけとりひょうか
• 確認します → かくにんします

A quick breakdown:

• 出品者 = seller / person listing an item
• 発送期限 = shipping deadline
• 受取評価 = receipt evaluation / confirmation rating / buyer feedback after receiving
• 確認します = checks / confirms

は marks the topic.

So 出品者は means something like:

• as for the seller
• the seller,
• when it comes to the seller

It does not directly mean the seller is the subject in the same way English does. It sets up what the sentence is about.

So the structure is roughly:

• 出品者は = as for the seller
• 発送期限だけでなく受取評価も確認します = checks not only the shipping deadline but also the receipt evaluation

This is a very common pattern:

• A だけでなく B も
• not only A, but also B

In your sentence:

• 発送期限だけでなく受取評価も確認します
• The seller checks not only the shipping deadline but also the receipt evaluation.

So:

• 発送期限 = A
• 受取評価 = B
• も marks the second item as also

This pattern is extremely useful in Japanese and appears often in both formal and everyday writing.

も means also / too.

In the pattern AだけでなくBも, the も is what gives the but also B part.

So:

• 受取評価も確認します = also checks the receipt evaluation

Without も, the balance of the not only A but also B pattern would feel incomplete.

For learning purposes, it is best to treat だけでなく as a set expression meaning:

• not only
• not just

It is closely related to だけではなく. In many cases:

• だけではなく → fuller form
• だけでなく → shorter, very common form
• だけじゃなく → casual form

So in this sentence, don’t try to interpret で by itself as the normal by / at / with particle. The whole chunk だけでなく works together as one grammar pattern.

This is a very common point of confusion.

With も, the object marker を is often omitted or effectively replaced.

Compare:

• 受取評価を確認します = checks the receipt evaluation
• 受取評価も確認します = also checks the receipt evaluation

The version with も is the natural one here.

Likewise, in AだけでなくBも, Japanese often leaves out the normal object marker and just presents the contrasted nouns directly.

So this is natural:

• 発送期限だけでなく受取評価も確認します

You do not need to force an を after each noun.

受取評価 is marketplace or e-commerce vocabulary.

It usually refers to the evaluation, rating, or feedback connected with the buyer confirming that they received the item.

So depending on the platform, it may imply things like:

• confirming receipt
• leaving a rating
• posting transaction feedback
• checking whether the buyer has completed that step

It is not a general everyday phrase in all contexts. It sounds very specific to online selling platforms.

出品者 specifically means a person who has listed an item for sale.

It is very common on auction sites, resale apps, and online marketplaces.

So compared with other words:

• 売り手 = seller, more general
• 販売者 = seller/vendor, often more formal or business-like
• 出品者 = the person who posted/listed the item

In this sentence, 出品者 fits the online marketplace context very well.

確認します means more than just look at.

It suggests:

• checking
• verifying
• making sure
• confirming the status of something

So 確認します sounds more precise and appropriate for business or platform-related actions.

Compare:

• 見ます = look at
• 確認します = check / verify / confirm

In this sentence, the seller is not casually glancing at something; they are checking important transaction details.

Not really. Japanese organizes the sentence differently.

The basic flow here is:

• 出品者は = topic
• 発送期限だけでなく受取評価も = the things being contrasted
• 確認します = verb at the end

Japanese normally puts the verb at the end, so the full action is completed only when you reach 確認します.

That means an English speaker should avoid trying to map it word-for-word in English order. It is better to see the structure as:

• As for the seller, [not only A but also B] checks/confirms.

Yes.

• だけでなく = standard / neutral / somewhat formal
• だけじゃなく = more casual

So in everyday speech, you might hear:

• 発送期限だけじゃなく、受取評価も確認します。

The meaning is the same. In written instructions, business messages, or platform text, だけでなく is more likely.