Ons stuur die dokument via e-pos.

In Afrikaans, verbs do not change form for different subjects the way they do in English.

So you get:

• ek stuur = I send
• jy stuur = you send
• ons stuur = we send
• hulle stuur = they send

That means stuur stays the same with ons.

Ons means we or sometimes us, depending on the sentence.

In Ons stuur die dokument via e-pos, it is the subject, so it means we.

Examples:

• Ons lees. = We read.
• Hy sien ons. = He sees us.

So here, ons is simply we.

Die is the Afrikaans definite article, meaning the.

So:

• die dokument = the document

A useful thing for English speakers: Afrikaans does not have different words for the based on gender. It is just die.

It is also used for both singular and plural:

• die dokument = the document
• die dokumente = the documents

Yes, it is very similar in meaning. Dokument means document.

The main difference for learners is spelling and pronunciation:

• Afrikaans: dokument
• English: document

Afrikaans often spells words more phonetically than English does.

Via e-pos means via email or by email.

• via = via / by way of
• e-pos = email

Yes, via is used in Afrikaans, especially in fairly neutral or slightly formal language. In everyday Afrikaans, many speakers also say:

• per e-pos = by email
• sometimes met e-pos, depending on context, though per e-pos is more standard for method

So these are all understandable, but via e-pos is perfectly normal.

In Afrikaans, e-pos is normally written with a hyphen. It is the standard spelling for email.

So:

• e-pos = email
• e-posadres = email address

This is something you mostly just have to learn as standard written form.

Because e-pos here is being used to show the method or means of sending.

So via e-pos means:

• by email
• via email

English does the same thing very often: we say by email, not usually by the email.

If you added die, it would usually sound unnatural in this sentence:

• via die e-pos is not the normal way to say it here.

Yes. This is standard Afrikaans main-clause word order:

• Ons = subject
• stuur = verb
• die dokument = object
• via e-pos = adverbial phrase showing how

So the pattern is:

Subject + verb + object + extra information

That makes Ons stuur die dokument via e-pos a very normal sentence.

Afrikaans usually uses a double negative with nie ... nie.

So:

• Ons stuur die dokument via e-pos. = We send the document via email.
• Ons stuur nie die dokument via e-pos nie. = We do not send the document via email.

That double nie is a very important Afrikaans pattern.

Yes. That is a very natural alternative.

Compare:

• Ons stuur die dokument via e-pos.
• Ons stuur die dokument per e-pos.

Both mean We send the document by email.

If you want the most idiomatic everyday option, many learners will hear per e-pos quite often. But via e-pos is also correct and clear.