Jag öppnar inte mejlet förrän jag kommer hem.

In a normal Swedish main clause, the finite verb usually comes in second position. This is the V2 rule.

So the pattern here is:

• Jag = subject
• öppnar = finite verb
• inte = negation
• mejlet = object

That gives:

• Jag öppnar inte mejlet.

This is different from English, where we often use do not:

• I do not open the email
• Swedish: Jag öppnar inte mejlet

Swedish does not use a helper like do here.

Mejlet is the definite form, meaning the email.

Swedish often attaches the equivalent of the to the end of the noun:

• ett mejl = an email
• mejlet = the email

So if you are talking about a specific email, Swedish usually uses the definite form.

In this sentence, the speaker means a particular email, not just any email.

Förrän is commonly used after a negative main clause and means something like until / not before.

So:

• Jag öppnar inte mejlet förrän jag kommer hem = I won’t open the email until I get home

This structure is very natural in Swedish:

• inte ... förrän ... = not ... until ...

Compare:

• Jag väntar förrän... → not natural
• Jag väntar tills... or Jag väntar tills jag kommer hem → natural

A useful tip:

• förrän often appears together with negation
• innan usually means before

Compare:

• Jag öppnar inte mejlet förrän jag kommer hem = I won’t open the email until I get home
• Jag öppnar mejlet innan jag kommer hem = I open the email before I get home

Swedish very often uses the present tense to talk about the future, especially when the future is clear from context.

So:

• Jag öppnar inte mejlet förrän jag kommer hem

literally looks like:

• I open not the email until I come home

but it naturally means:

• I won’t open the email until I get home

This is completely normal Swedish.

You can also express the future with forms like:

• ska
• kommer att

But in many everyday sentences, simple present is enough.

Swedish distinguishes between movement toward home and being at home.

• hem = homeward / to home
• hemma = at home

So:

• jag kommer hem = I get home / I come home
• jag är hemma = I am at home

Because the sentence is about arriving home, Swedish uses hem, not hemma.

After förrän, you get a subordinate clause. In Swedish, subordinate clauses do not follow the same V2 pattern as main clauses.

So in the subordinate clause, the normal order is:

• subject + verb + other elements

Here:

• jag = subject
• kommer = verb
• hem = adverb/direction

So:

• förrän jag kommer hem

This is normal subordinate clause word order.

A useful comparison:

• Main clause: Nu kommer jag hem
• Subordinate clause: ... när jag kommer hem

Yes, many Swedish speakers would understand emailen, but mejlet is very common in everyday Swedish.

Common options include:

• mejl / mejlet
• mail / mailet in less formal writing
• e-postmeddelandet in more formal or precise language

For everyday spoken and written Swedish, mejlet is a very natural choice.

It works very much like English open.

You can use öppna for:

• opening a door
• opening a box
• opening a file
• opening an email

So öppnar mejlet is exactly what you would expect for open the email.

In context, it can mean:

• opening it to read it
• clicking into it
• accessing it

Not very naturally.

A word-for-word version would be something like:

• I open not the email until I come home

That is understandable, but not natural English.

Natural English would usually be:

• I won’t open the email until I get home or
• I’m not opening the email until I get home

So the Swedish grammar is straightforward, but the most natural English translation usually changes the structure a bit.

Very often, yes. Learners should especially remember the pattern:

• inte ... förrän ...

For example:

• Jag äter inte förrän du kommer
• Hon går inte förrän mötet är slut

In modern Swedish, förrän is strongly associated with negative contexts.

If there is no negation, Swedish often prefers other words such as:

• innan
• tills

So as a beginner, a good rule is:

• after inte, förrän is often the right choice for until
• without negation, don’t automatically use förrän

Yes, very common and natural.

It sounds like normal spoken or written Swedish:

• clear
• idiomatic
• everyday

A native speaker would have no problem with it at all.

You might also hear small variations, such as:

• Jag tänker inte öppna mejlet förrän jag kommer hem
• Jag öppnar inte mejlet förrän jag är hemma

But the original sentence is already completely natural.