Я прочитаю письмо ещё раз перед отправкой.

Прочитаю is the perfective future form of прочитать. It shows a completed action: the speaker means I will read the letter through / finish reading it.

• Я читаю письмо = I am reading the letter / I read the letter (present, imperfective)
• Я буду читать письмо = I will be reading the letter (future, imperfective; focuses on the process)
• Я прочитаю письмо = I will read the letter in the sense of I will get through it / complete the reading

In this sentence, perfective makes sense because the speaker plans to do the reading as a single complete action before sending it.

In прочитать, the prefix про- often gives the sense of reading through something, from beginning to end. So прочитать письмо is not just to read in a general sense, but to read the letter completely.

That is why прочитаю works well here: the speaker intends to check the whole letter one more time before sending it.

Письмо is the direct object of прочитаю, so it is in the accusative case.

However, for inanimate neuter nouns, the accusative singular is the same as the nominative singular. So:

• nominative: письмо
• accusative: письмо

That is why the form does not change.

Ещё раз means one more time or once again.

So прочитаю письмо ещё раз means the speaker has probably already read it before and plans to read it again.

A useful comparison:

• ещё раз = one more time
• снова / опять = again

In many contexts they can be similar, but ещё раз very clearly emphasizes an additional repetition.

After перед in the sense of before, Russian normally uses the instrumental case.

The noun here is отправка (sending), and its instrumental singular form is отправкой.

So:

• отправка = sending
• перед отправкой = before sending

This is a very common pattern:

• перед встречей = before the meeting
• перед экзаменом = before the exam
• перед отъездом = before departure

Russian often expresses before doing something by using перед + verbal noun.

So English before sending becomes literally something like before the sending:

• перед отправкой

This is very natural in Russian.

You could also say:

• Я прочитаю письмо ещё раз перед тем, как отправить его.

That version uses a full clause: before I send it. It is also correct, but перед отправкой is shorter and more compact.

Russian often leaves out an object if it is already clear from context.

In English, we naturally say before sending it. In Russian, once письмо has already been mentioned, перед отправкой is enough to imply before sending the letter.

If you wanted to say it more explicitly, you could use:

• перед тем, как отправить его

But in the original sentence, leaving it implied sounds natural.

Not always. Russian often drops subject pronouns when the verb ending already shows who is doing the action.

Since прочитаю already means I will read, the sentence could also be:

• Прочитаю письмо ещё раз перед отправкой.

That would still be perfectly understandable.

Including Я can make the sentence:

• a little more explicit
• slightly more emphatic
• more natural in some contexts, especially if contrasting with someone else

Yes. Russian word order is more flexible than English word order, although different orders can sound slightly different in emphasis.

The neutral version here is:

• Я прочитаю письмо ещё раз перед отправкой.

Other possible orders include:

• Я ещё раз прочитаю письмо перед отправкой.
• Перед отправкой я прочитаю письмо ещё раз.

These all mean essentially the same thing, but the focus shifts a little:

• ещё раз earlier in the sentence can emphasize the repetition
• перед отправкой at the beginning can emphasize the timing

Yes, it is the same word, but its meaning depends on context.

Ещё can mean different things, including:

• still
• yet
• more
• as part of ещё раз = one more time

In this sentence, ещё раз is a fixed expression meaning once again / one more time, not still once or yet once.

Yes, but the nuance changes a little.

Compare:

• Я прочитаю письмо ещё раз = I’ll read the letter one more time
• Я снова прочитаю письмо = I’ll read the letter again
• Я опять прочитаю письмо = I’ll read the letter again

Ещё раз emphasizes one additional reading.
Снова is a neutral again.
Опять can sometimes sound a bit like again, once more, and in some contexts it may carry mild annoyance, depending on tone.

In this sentence, ещё раз is especially natural because it suggests proofreading or checking the letter before sending it.