Email multiple email addresses from file with Arduino

void sendEmails(char* message) {
    byte server[] = { 209, 225, 8, 76 }; // Your SMTP server ip goes here
    Client client (server, 25);
    File file = SD.open(FILE_WITH_EMAILS_GOES_HERE);
    if (file) {
        int fileSize = file.size();
        char recipientName[50];
        memset(recipientName, '\0', 50);
        byte p = 0;
        Serial.println("waiting for connection....");
        do {
            client.connect();
            delay(1000);
        } while (!client.connected());
        if (client.connected()) {
            Serial.println("Connected!");
            for (int i = 0; i < fileSize; i++) {
                byte c = file.read();
                if (c == '\n') {
                    p = 0;
                    client.println("HELO domain.com");
                    delay(500);
                    client.println("MAIL FROM: name@domain.com");
                    delay(500);
                    char rcptLine[60] = "RCPT To: <";
                    strcat(rcptLine, recipientName);
                    strcat(rcptLine, ">\r\n");
                    client.write(rcptLine);
                    delay(500);
                    client.println("DATA");
                    delay(500);
                    client.println("Subject: READ ME!");
                    delay(500);
                    client.println(message);
                    delay(500);
                    client.println(".");
                    delay(500);
                } else {
                    recipientName[p] = c;
                    p++;
                }
            }
            client.println("QUIT");
            client.stop();
        }
        file.close();
    } else {
        Serial.println("File couldn't be opened");
    }
}