انا رديت على الرسالة بعد الشغل.

Yes. You can say رديت على الرسالة بعد الشغل by itself.

In Egyptian Arabic, the verb form رديت already tells you the subject is I, so انا is not required. Adding انا can:

• add emphasis
• make the subject extra clear
• create contrast, as in I replied, not someone else

So both are natural:

• انا رديت على الرسالة بعد الشغل
• رديت على الرسالة بعد الشغل

رديت means I replied or I answered back.

It comes from the verb رد meaning to reply / respond / return an answer. In Egyptian Arabic, the past-tense ending -ت marks I.

So:

• رد = he replied
• رديت = I replied

In more careful spelling, you may also see ردّيت, with a shadda showing that the د is doubled in pronunciation.

No. In the first person singular in the past tense, Egyptian Arabic uses the same form for both men and women.

So both a man and a woman would say:

• انا رديت على الرسالة بعد الشغل

Because the verb رد in the sense of replying to something normally takes the preposition على in Arabic.

So:

• رديت على الرسالة = I replied to the message

This is a very common pattern:

• رد على السؤال = reply to the question
• رد على الإيميل = reply to the email
• رد على التليفون = answer the phone

So على is not optional here in normal usage.

الرسالة literally means the message or the letter. In everyday Egyptian Arabic, it can refer to different kinds of messages depending on context, such as:

• a text message
• a written message
• an email
• a letter

So the exact English word depends on the situation, but the Arabic phrase itself is very natural and flexible.

بعد الشغل literally means after the work, but in natural English it usually means after work.

In Egyptian Arabic, الشغل often means:

• work
• the job
• work in general
• the workplace context

So بعد الشغل is a very common way to say after work.

Because بعد الشغل is the normal idiomatic way to say after work.

In Egyptian Arabic, the definite article is often used in these everyday expressions where English uses no article. So الشغل here does not necessarily mean one specific piece of work; it can mean work in a general, familiar sense.

Compare:

• بعد الشغل = after work
• بعد شغل = after work/tasks, but this sounds less idiomatic here and more incomplete or less natural in everyday speech

So for this meaning, بعد الشغل is the form learners should remember.

Yes. Arabic word order is flexible, and Egyptian Arabic is especially comfortable with moving time expressions around.

The original sentence is:

• انا رديت على الرسالة بعد الشغل

You could also say:

• بعد الشغل رديت على الرسالة
• رديت على الرسالة بعد الشغل

These all work, but the emphasis changes a little:

• starting with بعد الشغل emphasizes when
• starting with رديت focuses more on the action
• including انا can emphasize the subject

In both words, the ل of ال is not pronounced normally because both ر and ش are sun letters.

So the pronunciation is closer to:

• الرسالة → er-risaala / ir-risaala
• الشغل → ish-shoghl

That means the next consonant gets doubled in pronunciation.

So the full sentence is roughly pronounced:

• ana raddēt ʿala r-risaala baʿd ish-shoghl

Exact transliteration can vary, but the important point is that the ل of ال assimilates here.

It is clearly natural as Egyptian Arabic.

A few clues are:

• رديت as the everyday Egyptian past form
• الشغل for work
• the overall colloquial style

In Modern Standard Arabic, you would more likely see something like:

• أنا رددتُ على الرسالة بعد العمل

or possibly:

• بعد العمل رددتُ على الرسالة

So the sentence you were given is the everyday spoken Egyptian way.

In Egyptian Arabic, a very common way to negate past verbs is with ما...ش around the verb.

So:

• انا ما رديتش على الرسالة بعد الشغل
• or written together by some people: انا مرديتش على الرسالة بعد الشغل

This means:

• I didn’t reply to the message after work

The most important pattern to notice is:

• رديت = I replied
• ما رديتش = I didn’t reply

Sometimes yes, but there is a small nuance.

• رديت على الرسالة = I replied to the message
• جاوبت على الرسالة = I answered the message

Both can work in many situations, but رديت على often feels especially natural for replying to a message, email, or text. جاوبت على can sound more like answered, including answering a question.

So for a message, رديت على الرسالة is a very good, natural choice.