Klicka på länken i meddelandet, så öppnas filen direkt.

In Swedish, klicka på is the normal expression for click on something.

• klicka = click
• på = on

So:

• Klicka på länken = Click on the link

In modern English, people often say just click the link, but Swedish usually keeps the preposition på here.

Those endings are the definite article in Swedish. Instead of putting a separate word like the before the noun, Swedish usually adds it to the end.

• länk = link

• länken = the link

• meddelande = message

• meddelandet = the message

• fil = file
• filen = the file

So Swedish often expresses the as a suffix rather than a separate word.

Because Swedish uses i for something being in a message.

• i meddelandet = in the message

That is the natural choice when you mean the link is contained inside the text or content of the message.

By contrast, på is used in many other expressions, but here i is the idiomatic one.

It is a noun phrase made up of:

• länken = the link
• i meddelandet = in the message

So i meddelandet is a prepositional phrase that describes which link we mean: the link that is in the message.

This works much like English the link in the message.

Because Klicka is an imperative form, used for commands or instructions.

• klicka = click!
• implied subject = you

Swedish, like English, usually leaves out the subject in commands:

• Klicka på länken. = Click on the link.
• Öppna filen. = Open the file.

You could think of du as understood, but it is normally not stated.

Here så means something like:

• and then
• and as a result
• in that case

In this sentence, it links the action and the result:

• Klicka på länken i meddelandet, så öppnas filen direkt.

The sense is: Click on the link in the message, and then/as a result the file opens immediately.

So this is not the basic så meaning so in the sense of very or like that. It is a linking word showing consequence.

This is because Swedish main clauses follow the V2 rule: the finite verb normally comes in the second position.

In så öppnas filen direkt:

1. så = first element
2. öppnas = finite verb, so it must come second
3. filen = subject

So the order is:

• så + öppnas + filen

not

• så + filen + öppnas

This word order is very typical in Swedish after an opening element such as så, nu, sedan, då, etc.

Öppnas is the s-passive form of öppna.

• öppna = to open
• öppnar = opens / is opening
• öppnas = is opened / opens

In this sentence, it means the file opens or is opened. Swedish often uses the -s passive where English may prefer an active-style wording.

So:

• så öppnas filen direkt

literally looks passive, but in natural English it is often best understood as the file opens immediately or the file is opened immediately.

Because the sentence focuses on what happens to the file, not on who opens it.

Swedish often uses passive wording in instructions and technical language:

• filen öppnas / öppnas filen = the file opens / the file is opened

This sounds neutral and procedural, which is very common in manuals, websites, and interface instructions.

An active version would need an agent, for example:

• systemet öppnar filen = the system opens the file

But that is not necessary here.

Direkt means directly, immediately, or right away.

In this sentence, it tells you that the file opens without delay:

• filen öppnas direkt = the file opens immediately

In everyday English, right away is often the most natural equivalent.

It is very normal here because the sentence has two linked parts:

• Klicka på länken i meddelandet
• så öppnas filen direkt

The comma helps show a pause and a result relationship: do this, and then this happens.

In informal writing, punctuation can vary, but with this kind of instructional sentence, the comma is natural and clear.

Yes, but it would sound a bit different.

For example:

• Klicka på länken i meddelandet, så kommer filen att öppnas direkt.

This is more explicitly future-oriented: the file will open immediately.

The original:

• så öppnas filen direkt

is shorter, more neutral, and very typical for instructions. Swedish often uses the present/passive form for things that happen automatically after an action.

It is mostly neutral and very typical of instructions in apps, emails, or help pages.

• Klicka på ... is the standard imperative used in written instructions.
• så öppnas filen direkt is neutral and practical.

It is not especially formal, but it is also not casual slang. It sounds like normal interface or support language.