Czy możesz pobrać załącznik u mnie, czy wolisz zrobić to u siebie?

Because Polish often drops subject pronouns when the verb already makes the subject clear.

• możesz = you can
• wolisz = you prefer

So ty is understood automatically. Adding ty is possible, but it usually adds emphasis or contrast.

For example:

• Czy możesz...? = neutral
• Czy ty możesz...? = more emphatic, sometimes sounding like are you the one who can...?

The two czy words do slightly different jobs here.

1. The first czy introduces a question.
2. The second czy connects the alternative: or do you prefer...

So the pattern is:

Czy X, czy Y?

This is a very common Polish way to ask between two options. In English, it often corresponds to something like:

• Can you do X, or would you prefer Y?

You could think of the second czy as being close to or in this kind of sentence.

Because after verbs like możesz (you can) and wolisz (you prefer), Polish normally uses the infinitive of the next verb.

So:

• możesz pobrać = you can download/get
• wolisz zrobić = you prefer to do

This is similar to English structures like:

• can do
• prefer to do

This is about aspect, which is very important in Polish.

• pobrać and zrobić are perfective
• pobierać and robić are imperfective

Here, the speaker is talking about a single completed action:

• download the attachment
• do it

That is why the perfective forms sound natural.

Very roughly:

• pobrać = download it successfully / get it done once
• pobierać = be downloading / download repeatedly / focus on the process

So in this sentence, the perfective verbs fit better.

Załącznik is in the accusative singular, because it is the direct object of pobrać.

You are asking someone to download/get what?
Answer: załącznik

It looks unchanged because załącznik is a masculine inanimate noun, and for many such nouns:

• nominative singular = accusative singular

So:

• nominative: załącznik
• accusative: załącznik

That is completely normal.

U mnie literally means something like at my place, but in real usage it can be broader than that.

Depending on context, it may mean:

• at my place
• on my computer
• on my side
• in my environment/setup

That is why it may sound a little wider than a literal English at me, which is not natural English.

In technical or practical contexts, u mnie often means something like on my end.

Because u and w are used differently in Polish.

• w usually means in / inside
• u with a person usually means at someone's place, with someone, or more loosely on someone's side/end

So:

• u mnie = at my place / on my end
• w mnie would mean inside me, which is a completely different idea and does not fit here

U siebie means at your own place / on your own side, using the reflexive pronoun siebie.

Because the implied subject is you (from wolisz), u siebie here means:

• at your place
• on your side
• in your own setup

Why use u siebie instead of u ciebie?

• u ciebie = at your place
• u siebie = at your own place

Both can work in many contexts, but u siebie often sounds especially natural when contrasting with u mnie:

• u mnie = at my place/on my end
• u siebie = at your own place/on your end

It creates a neat contrast.

After u, Polish uses the genitive.

So:

• u mnie — mnie is the genitive form here
• u siebie — siebie is also genitive here

This is just a rule of the preposition u: it requires the genitive.

To means it / that, and it stands for the action already mentioned.

Instead of repeating pobrać załącznik, Polish uses to to avoid repetition.

So:

• czy wolisz zrobić to u siebie?
• literally: or do you prefer to do it on your end?

The to refers back to the previously mentioned action: downloading/getting the attachment.

Yes. Polish often avoids repetition with to, but repeating the verb is also possible.

For example, you could say something like:

• Czy możesz pobrać załącznik u mnie, czy wolisz pobrać go u siebie?

That is also understandable and natural.

The version with zrobić to is shorter and less repetitive.

No, Polish word order is fairly flexible. This sentence is natural, but some parts could move around depending on emphasis.

For example, you might also hear:

• Czy możesz u mnie pobrać załącznik, czy wolisz zrobić to u siebie?

The meaning stays very similar, but the emphasis can shift slightly.

In the original sentence, pobrać załącznik is presented first as the action, and u mnie comes after it to specify the location/side.

Because the sentence has two clauses:

• Czy możesz pobrać załącznik u mnie
• czy wolisz zrobić to u siebie

The comma separates these two coordinated parts of the question. This is standard Polish punctuation.

Yes, it is generally neutral and acceptable, especially in everyday conversation.

But it is not the softest possible phrasing. If the speaker wants to sound more polite or tentative, Polish often uses mógłbyś / mogłabyś instead:

• Czy mógłbyś pobrać załącznik u mnie, czy wolałbyś zrobić to u siebie?

So:

• Czy możesz...? = normal, direct
• Czy mógłbyś...? = softer, more polite

Very often, yes. In modern usage, załącznik commonly means an attachment, especially in email or messaging contexts.

Depending on context, it can also mean an appendix or attached document more generally. But for many learners, the most common everyday meaning is indeed file attachment.