بريد الاسترداد موثوق.

In the present tense, Arabic usually does not use a separate word for is / am / are.

So:

• بريد الاسترداد موثوق
  literally looks like
• recovery email trusted/reliable

but it means:

• The recovery email is trusted/reliable.

This is a very common Arabic sentence pattern: subject + predicate, with no present-tense to be.

If you wanted the past tense, then Arabic would use a verb, for example:

• كان بريد الاسترداد موثوقًا = The recovery email was reliable.

Because بريد الاسترداد is an iḍāfa construction, often called a genitive/possessive construction.

In an iḍāfa:

• the first noun usually does not take الـ
• the second noun determines whether the whole phrase is definite or indefinite

Here:

• بريد = mail / email
• الاسترداد = the recovery / retrieval

So:

• بريد الاسترداد literally = email of the recovery
• natural English = the recovery email

Because الاسترداد is definite, the whole phrase بريد الاسترداد is also definite.

Yes. It is an iḍāfa phrase.

Arabic often expresses ideas like:

• the book of the student
• the office of the manager
• the recovery email

by putting two nouns together.

So:

• بريد = email/mail
• الاسترداد = recovery

Together:

• بريد الاسترداد = recovery email
• more literally: email of recovery

This is how Arabic commonly links nouns without using a separate word like of.

موثوق is an adjective in this sentence, meaning something like:

• trusted
• reliable
• dependable

It is historically a passive participle, but for a learner it is often easiest to think of it here as an adjective describing بريد الاسترداد.

So the structure is:

• بريد الاسترداد = the recovery email
• موثوق = reliable / trusted

Together:

• The recovery email is reliable/trusted.

Because it agrees with بريد, which is:

• singular
• masculine

In Arabic, adjectives and predicate adjectives usually agree with the noun in gender and number.

Here:

• بريد is masculine singular
• so موثوق is also masculine singular

If the noun were feminine, the adjective would normally be feminine too.

Because it is the predicate of the sentence, not part of the noun phrase بريد الاسترداد.

In a sentence like this, Arabic often has:

• a definite subject
• an indefinite predicate

So:

• بريد الاسترداد = definite subject
• موثوق = predicate meaning reliable / trusted

This is a very normal pattern in Arabic.

If you made موثوق definite as الموثوق, the meaning and structure would change, and it would no longer sound like the simple sentence The recovery email is reliable.

A common pause-form pronunciation is:

• barīd al-istirdād mawthūq

If full case endings are pronounced, it would be closer to:

• barīdu l-istirdādi mawthūqun

A few helpful notes:

• بريد = barīd
• الاسترداد = al-istirdād
• موثوق = mawthūq

In everyday spoken reading, many final case endings are dropped, especially in pause.

Because the phrase is talking about a specific kind of email: the recovery email.

Using الـ on الاسترداد makes the second noun definite, and that makes the whole iḍāfa phrase definite too.

Compare:

• بريد استرداد = a recovery email or recovery email in a more general sense
• بريد الاسترداد = the recovery email

In many interface or technical contexts, the definite version is very natural.

Yes, but the normal straightforward order here is:

• بريد الاسترداد موثوق

This is the standard subject + predicate order.

You might sometimes see other orders in Arabic for emphasis or style, but for learners, this sentence is best understood as:

• بريد الاسترداد = subject
• موثوق = predicate

So this is the most neutral and useful form to learn first.

A very common way is:

• بريد الاسترداد غير موثوق
  = The recovery email is not reliable

Here غير means something like not / non- before an adjective.

Another possible way is with ليس:

• ليس بريد الاسترداد موثوقًا
  = The recovery email is not reliable

For many learners, غير موثوق is the easiest pattern to recognize and use.

It can mean either, depending on context.

Common English equivalents include:

• trusted
• reliable
• dependable
• sometimes verified in technical contexts

In a technology or account-security context, بريد الاسترداد موثوق would often be understood as something like:

• The recovery email is trusted
• The recovery email is reliable
• The recovery email is a trusted one

So the exact English wording can shift a little depending on the situation.