O remetente pagou o porte de cinco euros.

O is the masculine singular definite article, meaning the.

So o remetente means the sender. In Portuguese, using the definite article with a noun like this is completely normal. Here it refers to a specific sender, not just any sender.

If it were an unspecified sender, you could say um remetente.

Remetente is a common-gender noun: the noun itself stays the same, and the article shows the gender.

• o remetente = the male sender, or sometimes just the sender
• a remetente = the female sender

So only the article changes, not the noun.

Pagou is the pretérito perfeito in European Portuguese: the simple past for a completed action.

It is the 3rd person singular form of pagar.

• eu paguei = I paid
• tu pagaste = you paid
• ele/ela pagou = he/she paid

So pagou tells you that the payment happened and was completed in the past.

Because pagar normally takes a direct object in Portuguese when you say what was paid.

So Portuguese usually says:

• pagar a conta
• pagar a multa
• pagar o porte

This is different from English, which often uses pay for.

So the most direct match is:

• English: paid for the postage
• Portuguese: pagou o porte

You may sometimes see pagar por in other contexts, but with bills, fees, postage, and similar things, the direct-object pattern is the standard one learners should focus on.

Here porte means postage, shipping charge, or carriage fee, especially in a postal or parcel context.

In European Portuguese, porte is a normal word for the amount charged to send something.

So in this sentence, it is not about physical carrying or transport in a broad sense. It specifically means the fee for sending the item.

A very common related expression is:

• portes de envio = shipping costs / delivery charges

Here de cinco euros describes the amount of the fee.

So o porte de cinco euros means the postage/shipping charge of five euros.

This structure is very common in Portuguese:

• uma multa de 50 euros = a fine of 50 euros
• um prémio de 100 euros = a prize of 100 euros
• uma taxa de 20 euros = a fee of 20 euros

So de links the noun to its value or amount.

Yes, absolutely. That is also natural.

Both are possible:

• O remetente pagou o porte de cinco euros.
• O remetente pagou cinco euros de porte.

The second version may sound a bit more straightforward in everyday speech, while the original sentence can sound a little more formal or written.

Another common alternative is:

• O porte foi de cinco euros. = The postage came to five euros.

Because the noun must agree in number with the amount.

• um euro = one euro
• cinco euros = five euros

So after cinco, you need the plural: euros.

Yes, it sounds very natural in European Portuguese.

Words like remetente are used in both Portugal and Brazil, but porte in the sense of postal/shipping charge feels especially at home in Portugal and in formal postal language.

In Brazilian Portuguese, depending on the context, you might also hear things like:

• frete
• custo de envio

So the sentence is perfectly correct Portuguese, but its style fits European Portuguese very well.

A rough English-friendly guide is:

• remetente ≈ ruh-muh-TEN-tuh
• pagou ≈ puh-GOH
• porte ≈ POR-tuh
• euros ≈ EU-roosh

A few important notes:

• European Portuguese often reduces unstressed vowels, so some vowels sound weaker than an English speaker might expect.
• euros in Portugal usually ends with a sound like -sh because final s is often pronounced that way.
• The stress in pagou is on the last syllable: pa-GOU.

These are only rough guides, but they are useful starting points.