既にアカウントがあるのなら、システムを使って電子メールを送受信できます。
Sentence Analyzer
English Translation
        If there is already an account, there is a system by which you are able to send and receive email.
    
Furigana
Romanji
        Sudeni akaunto ga aru no nara, shisutemu o tsukatte denshi me-ru o sōjushin dekimasu.
    
Words
            
                既に
            
            
                (すでに、すんでに)
            
        
        
            already; too late
        
    
            
                アカウント
            
            
                (アカウント)
            
        
        
            account
        
    
            
                が
            
            
                (が)
            
        
        
            indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and
        
    
            
                有る
            
            
                (ある)
            
        
        
            to be (usu. of inanimate objects); to exist; to live; to have; to be located; to be equipped with; to happen; to come about
        
    
            
                の
            
            
                (の)
            
        
        
            indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question
        
    
            
                だ
            
            
                (だ)
            
        
        
            be; is; indicates past or completed action; indicates light imperative
        
    
            
                システム
            
            
                (システム)
            
        
        
            system
        
    
            
                を
            
            
                (を)
            
        
        
            indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.
        
    
            
                使う
            
            
                (つかう)
            
        
        
            to use (a thing, method, etc.); to make use of; to put to use; to use (a person, animal, puppet, etc.); to employ; to handle; to manage; to manipulate; to use (time, money, etc.); to spend; to consume; to use (language); to speak
        
    
            
                電子
            
            
                (でんし)
            
        
        
            electron; (esp. as a prefix) electronic; electronics
        
    
            
                メール
            
            
                (メール、メイル、メェル)
            
        
        
            email; mail (usu. in phrases and compound words); male
        
    
            
                送受信
            
            
                (そうじゅしん)
            
        
        
            transceiver (send and receive)
        
    
            
                出来る
            
            
                (できる)
            
        
        
            to be able (in a position) to do; to be up to the task; to be ready; to be completed; to be made; to be built; to be good at; to be permitted (to do); to become intimate; to take up (with somebody); to grow; to be raised; to become pregnant
        
    Kanji
Readings: キ、 すで.に
                        Meanings: previously, already, long ago
                    Readings: シ、 つか.う、 つか.い、 -つか.い、 -づか.い
                        Meanings: use, send on a mission, order, messenger, envoy, ambassador, cause
                    Reading: デン
                        Meaning: electricity
                    Readings: シ、 ス、 ツ、 こ、 -こ、 ね
                        Meanings: child, sign of the rat, 11PM-1AM, first sign of Chinese zodiac
                    Readings: ソウ、 おく.る
                        Meanings: escort, send
                    Readings: ジュ、 う.ける、 -う.け、 う.かる
                        Meanings: accept, undergo, answer (phone), take, get, catch, receive
                    Reading: シン
                        Meanings: faith, truth, fidelity, trust