jaebaesong unsongjangeul dasi bonae jusipsio.

재배송 means reshipment, re-delivery, or sending the item again.

It is made of:

• 재- = again, re-
• 배송 = delivery, shipment

So 재배송 운송장 is the shipping document / tracking information for a shipment that is being sent again.

Literally, 운송장 means a waybill, shipping label, or shipping document.

In real-life customer service Korean, people often use 운송장 to refer loosely to the shipment’s tracking information, and sometimes even the tracking number itself.

So depending on context, this could mean:

• the actual shipping slip / label
• the waybill information
• the tracking number

If someone wanted to be very specific about the number, they might say 운송장 번호.

The -을 is the object particle.

• 운송장 = waybill / shipping document
• 운송장을 = the waybill (as the thing being acted on)

Here, the verb is 보내다 (to send), so 운송장 is the thing being sent.

So:

• 운송장을 보내다 = to send the waybill / tracking info

Good question. They are doing different jobs:

• 재배송 describes the type of shipment: a reshipment / replacement shipment
• 다시 modifies 보내다: send again

So the sentence does not literally repeat the same meaning in exactly the same way.

It means something like:

• Please send the reshipment waybill again
• in natural English: Please resend the tracking information for the reshipment

So 재배송 is about the shipment itself, and 다시 is about the action of sending the information one more time.

보내 주십시오 is a formal, polite request meaning please send.

Breakdown:

• 보내다 = to send
• 주다 = to give
• -십시오 = very polite formal request/command ending

In this pattern, 주다 does not literally mean give in the normal sense. It adds the nuance of please do this for me/us.

So:

• 보내십시오 = Send it. (formal)
• 보내 주십시오 = Please send it for me/us. (more polite and request-like)

Because 주다 is being used as an auxiliary verb after the main verb 보내다.

In standard spacing, this is usually written separately:

• 보내 주십시오

You may sometimes see forms written together in casual writing, but the standard spacing here is 보내 주십시오.

주십시오 is quite formal and polite. It is common in:

• business communication
• customer service
• official notices
• formal emails
• written requests

Compared with other forms:

• 보내 줘 = casual, informal
• 보내 주세요 = polite, common, everyday
• 보내 주십시오 = more formal and official

So this sentence sounds appropriate in a customer-service or business context.

Yes.

• 재배송 운송장을 다시 보내 주세요.
  = polite and natural
• 재배송 운송장을 다시 보내 주십시오.
  = more formal and official

Both are grammatically correct. The difference is mainly level of formality.

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

In a sentence like this, the implied meaning is something like:

• (You/your company), please send the reshipment waybill again.

But Korean does not need to say you explicitly if the listener already knows who is being asked.

This is very normal in Korean.

Yes, it can be natural in shipping/customer-service contexts, but the exact wording depends on what the speaker wants.

Possible interpretations:

• the shipping document for the reshipment
• the tracking info for the reshipment
• the reshipment waybill

If the speaker specifically wants the tracking number, Korean speakers may also say:

• 재배송 운송장 번호를 다시 보내 주세요.
• 재배송 송장 번호를 다시 보내 주세요.

So the original sentence is understandable and usable, but in some contexts people might choose a slightly more specific noun.

The structure is:

• 재배송 운송장 = reshipment waybill / tracking info
• -을 = object marker
• 다시 = again
• 보내 주십시오 = please send

So the pattern is:

[object] + 다시 + 보내 주십시오
= Please send [object] again

That makes the whole sentence:

재배송 운송장을 다시 보내 주십시오.
= Please send the reshipment waybill/tracking information again.

No. Here 다시 보내다 means send again / resend, not send back.

If you want to say send back, Korean often uses expressions like:

• 돌려보내다 = send back, return
• 반송하다 = return/send back

So in this sentence, 다시 clearly means one more time, not back to the original place.