<table  *ngIf='mails && mails.length'>
                <thead>
                    <tr>
                        <th>Subject</th>
                        <th>From</th>
                    </tr>
                </thead>
                <tbody>
                    <tr *ngFor='let mail of mails'>
                        <td>{{mail.subject}}</td>
                        <td>{{mail.sender}}</td>

                    </tr>
                </tbody>
            </table>