مع انني مشغول في العمل، اكتب رسالة الى صديقي.

مع أنني means although I... or even though I... in this sentence.

A very common learner question is about the spelling:

• Careful standard spelling: مع أنني
• The version in your sentence: مع انني

In formal Modern Standard Arabic, it is better to write the hamza: أنني.
So the fully standard spelling is:

مع أنني مشغول في العمل، أكتب رسالة إلى صديقي.

Here, أنني is made of:

• أنّ = that
• ـني = me / I

Together after مع, the whole expression works like although I am...

In Arabic, the present-tense verb to be is usually not written.

So:

• أنا مشغول = I am busy
• literally: I busy

That is completely normal Arabic.

In this sentence:

• أنني مشغول = that I am busy / that I’m busy

Arabic usually leaves out am / is / are in the present tense, but not in the past or future.

For example:

• أنا مشغول = I am busy
• كنت مشغولًا = I was busy
• سأكون مشغولًا = I will be busy

مشغول is an adjective meaning busy.

It agrees with the speaker’s gender and number:

• مشغول = masculine singular
• مشغولة = feminine singular

So if the speaker is male, مشغول is correct.
If the speaker is female, it would be:

مع أنني مشغولة في العمل، أكتب رسالة إلى صديقي.

So this word tells you something about the speaker: the sentence is written from a masculine viewpoint unless context says otherwise.

في العمل literally means in the work or in work, but in natural English it often means at work.

Breakdown:

• في = in / at
• العمل = the work / work

So:

• مشغول في العمل = busy at work

This is a normal Arabic expression.
A learner might expect a more literal equivalent of English at, but Arabic often uses في where English uses in or at depending on context.

It can mean either one, depending on context.

In MSA, the present tense often covers both:

• I write
• I am writing

So أكتب رسالة can mean:

• I write a letter/message
• I am writing a letter/message

Context decides which English translation sounds best.

In this sentence, it will often be understood as something like:

• Although I’m busy at work, I’m writing a message to my friend
• or Although I’m busy at work, I write a message to my friend

The first is usually more natural in English.

That أ marks the first person singular in the present tense.

The verb is from كتب = to write.

Present-tense forms include:

• أكتب = I write
• تكتب = you write / she writes
• يكتب = he writes
• نكتب = we write

So أكتب tells you the subject is I, even though Arabic does not need to say أنا here.

That is why the sentence does not need a separate pronoun before أكتب.

رسالة means message, letter, or written message, depending on context.

In this sentence, it is the direct object of أكتب:

• أكتب رسالة = I write a message / letter

So:

• أكتب = I write
• رسالة = a message

In fully vowelled formal Arabic, it would be:

أكتبُ رسالةً

with ـً because it is an indefinite direct object.

In everyday Arabic writing, these case endings are usually omitted, so you just see رسالة.

إلى صديقي means to my friend.

Breakdown:

• إلى = to
• صديق = friend
• ـي = my

So:

• صديقي = my friend

This ـي is a possessive suffix attached directly to the noun.

Also, because صديق comes after the preposition إلى, it is in the genitive position. In fully vowelled Arabic you would see something like:

إلى صديقي

The ending already looks the same in normal spelling, so learners mainly just need to know that prepositions like إلى make the following noun genitive.

They are important for grammar, but they are usually not written in normal Arabic text.

A fully vowelled version would be approximately:

مَعَ أَنَّنِي مَشْغُولٌ فِي العَمَلِ، أَكْتُبُ رِسَالَةً إِلَى صَدِيقِي.

This shows several things:

• مَشْغُولٌ has nominative ending because it is the predicate
• العَمَلِ is genitive after في
• أَكْتُبُ has the normal indicative ending
• رِسَالَةً is an indefinite accusative direct object
• صَدِيقِي comes after إلى, so it is in the genitive position

In normal MSA writing, you usually write:

مع أنني مشغول في العمل، أكتب رسالة إلى صديقي.

So yes, the endings matter grammatically, but it is normal not to write them.

Yes, the word order is natural.

This sentence starts with a concessive clause:

• مع أنني مشغول في العمل = although I am busy at work

Then comes the main clause:

• أكتب رسالة إلى صديقي = I write / am writing a message to my friend

That order is common and clear.

You could also put the main clause first, for example:

أكتب رسالة إلى صديقي مع أنني مشغول في العمل.

That would still be understandable.

Arabic is often flexible with word order, but this version is perfectly fine.

It is understandable and basically fine in MSA, especially for learning purposes.

A few notes:

1. مع أنني is correct, but many learners also meet:

   • رغم أنني
   • على الرغم من أنني

   These also mean although / even though.

2. رسالة can mean letter or message. If you specifically mean a text message, email, etc., context matters.

3. If you want the sentence to sound more explicitly ongoing in English, Arabic still often just uses the present:

   • أكتب رسالة can naturally cover I am writing a message.

So the sentence is fine, but depending on style and context, a native writer might choose a slightly different connector or a more specific noun.

Good question, because Arabic marks gender more often than English.

If the speaker is female:

• مشغول becomes مشغولة

So:

مع أنني مشغولة في العمل، أكتب رسالة إلى صديقي.

If the friend is female:

• صديقي becomes صديقتي = my female friend

So:

مع أنني مشغول في العمل، أكتب رسالة إلى صديقتي.

If both are female:

مع أنني مشغولة في العمل، أكتب رسالة إلى صديقتي.

So gender affects:

• adjectives like مشغول / مشغولة
• nouns like صديقي / صديقتي when the person referred to is male or female