Prima di allegare il file, rileggo il messaggio.

Because prima di + infinitive is the normal way to say before doing something when the subject is the same as in the main clause.

• Prima di allegare il file, rileggo il messaggio. = Before attaching the file, I reread the message.

Here, the person who attaches the file and the person who rereads the message are the same person: I.

If the subject changes, Italian usually uses prima che + subjunctive:

• Prima che tu alleghi il file, rileggo il messaggio. = Before you attach the file, I reread the message.

So:

• prima di + infinitive = same subject
• prima che + subjunctive = different subject

Prima di means before in the sense of before doing something.

It is made of:

• prima = before / earlier
• di = of / to, but here it is just part of the structure

Common patterns:

• prima di partire = before leaving
• prima di uscire = before going out
• prima di mangiare = before eating

So prima di allegare il file literally means before attaching the file.

It is in the infinitive because after prima di, Italian uses the infinitive when the subject is the same.

So:

• prima di allegare
• prima di leggere
• prima di inviare

This works a lot like English before + -ing in meaning, although the grammar is different:

• prima di allegare il file = before attaching the file

Yes, allegare commonly means to attach, especially in contexts like emails, documents, and files.

Examples:

• allegare un file = to attach a file
• allegare un documento = to attach a document
• Ho allegato la foto. = I attached the photo.

The noun is:

• allegato = attachment

For example:

• Trovi il file in allegato. = You’ll find the file attached / in the attachment.

Italian uses definite articles much more often than English.

So even where English might say:

• attach file
• reread message

Italian normally says:

• allegare il file
• rileggere il messaggio

The article often sounds natural and necessary in Italian, especially when talking about a specific thing already understood in context.

Here:

• il file = the file
• il messaggio = the message

Even if English might sometimes omit an article in a brief instruction, Italian usually keeps it.

Rileggo comes from the verb rileggere, which means to reread.

It is built from:

• ri- = again, re-
• leggere = to read

So:

• leggo = I read
• rileggo = I reread / I read again

This ri- prefix is very common in Italian:

• fare → rifare = to do again, remake
• scrivere → riscrivere = to rewrite
• vedere → rivedere = to see again, review

Because the verb is rileggere, and its io form is rileggo.

This happens because leggere itself conjugates like this:

• io leggo
• tu leggi
• lui/lei legge

So when you add ri-:

• io rileggo
• tu rileggi
• lui/lei rilegge

The double gg is inherited from leggere.

Yes, rileggo is present tense: I reread / I am rereading depending on context.

Italian present tense often covers meanings that in English may be expressed with:

• simple present
• present progressive
• sometimes a habitual action

So:

• rileggo il messaggio can mean I reread the message
• depending on context, it can also feel like I reread the message before attaching the file

Italian does not need a special progressive form here. The basic present works naturally.

Yes, it could be reversed.

The given order puts the time phrase first:

• Prima di allegare il file, rileggo il messaggio.

This emphasizes the before attaching the file part.

You can also say:

• Rileggo il messaggio prima di allegare il file.

Both are correct and natural. The meaning is essentially the same.

Italian often allows this kind of flexibility in word order, especially with introductory time expressions.

When prima di allegare il file comes at the beginning of the sentence, a comma is very natural and standard:

• Prima di allegare il file, rileggo il messaggio.

If the time phrase comes after the main clause, no comma is usually needed:

• Rileggo il messaggio prima di allegare il file.

So the comma here helps separate the introductory phrase from the main clause.

Yes, you could. Both are correct.

• rileggo il messaggio
• leggo di nuovo il messaggio

Both mean I reread the message.

The difference is mainly style:

• rileggo is more compact and often more natural
• leggo di nuovo is a little more explicit: I read again

Italian often has both options:

• prefix form: rileggere
• expression with di nuovo: leggere di nuovo

Messaggio can mean different kinds of message depending on context:

• a text message
• a written message
• an email message
• even a general message or communication

In this sentence, because we have allegare il file, the context strongly suggests an email or something similar, so il messaggio is naturally understood as the message/email message.

If you wanted to be more specific, you could say:

• l’email = the email
• il messaggio di posta elettronica = the email message

But il messaggio is perfectly fine here.

A simple pronunciation guide:

• rileggo ≈ ree-LEG-go
• allegare ≈ al-le-GA-re

A few helpful points:

• In rileggo, the stress is on -leg-
• In allegare, the stress is on -ga-
• The gg in rileggo is a strong hard g sound, like in go
• The g in allegare is also hard because it comes before a

If you want to say the whole sentence smoothly:

• Prima di allegare il file, rileggo il messaggio.

Approximate pronunciation:

• PREE-ma dee al-le-GA-re eel FAI-le, ree-LEG-go eel mes-SAJ-joh

The real Italian pronunciation is smoother than that, but this can help as a starting point.