simple email template with inline css

<table style='display:none!important;'>
        <tr>
            <td>
                <div style='overflow:hidden;display:none;font-size:1px;color:#ffffff;line-height:1px;font-family:Arial;maxheight:0px;max-width:0px;opacity:0;'>
                    Welcome to MDB!
                </div>
            </td>
        </tr>
    </table>

    <table border='0' width='100%' cellpadding='0' cellspacing='0' bgcolor='ffffff'>

        <tr>
            <td align='center'>
                <table border='0' align='center' width='590' cellpadding='0' cellspacing='0' class='container590'>

                    <tr>
                        <td height='25' style='font-size: 25px; line-height: 25px;'>&nbsp;</td>
                    </tr>

                    <tr>
                        <td align='center'>

                            <table border='0' align='center' width='590' cellpadding='0' cellspacing='0' class='container590'>

                                <tr>
                                    <td align='center' height='70' style='height:70px;'>
                                        <a href='' style='display: block; border-style: none !important; border: 0 !important;'><img width='100' border='0' style='display: block; width: 100px;' src='http://saahasyouthfoundation.org/img-cust/logo-png.png' /></a>
                                    </td>
                                </tr>

                            </table>
                        </td>
                    </tr>

                    <tr>
                        <td height='25' style='font-size: 25px; line-height: 25px;'>&nbsp;</td>
                    </tr>

                </table>
            </td>
        </tr>
    </table>

    <table border='0' width='100%' cellpadding='0' cellspacing='0' bgcolor='ffffff' class='bg_color'>

        <tr>
            <td align='center'>
                <table border='0' align='center' width='590' cellpadding='0' cellspacing='0' class='container590'>

                    <tr>
                        <td align='center' style='color: #343434; font-size: 24px; font-family: Quicksand, Calibri, sans-serif; font-weight:700;letter-spacing: 3px; line-height: 35px;'
                            class='main-header'>

                            <div style='line-height: 35px'>

                                Welcome to the <span style='color: #f26522;'>Saahas Youth Foundation</span>

                            </div>
                        </td>
                    </tr>

                    <tr>
                        <td height='10' style='font-size: 10px; line-height: 10px;'>&nbsp;</td>
                    </tr>

                    <tr>
                        <td align='center'>
                            <table border='0' width='40' align='center' cellpadding='0' cellspacing='0' bgcolor='eeeeee'>
                                <tr>
                                    <td height='2' style='font-size: 2px; line-height: 2px;'>&nbsp;</td>
                                </tr>
                            </table>
                        </td>
                    </tr>

                    <tr>
                        <td height='20' style='font-size: 20px; line-height: 20px;'>&nbsp;</td>
                    </tr>

                    <tr>
                        <td align='left'>
                            <table border='0' width='590' align='center' cellpadding='0' cellspacing='0' class='container590'>
                                <tr>
                                    <td align='left' style='color: #888888; font-size: 16px; line-height: 24px;'>

                                        <p style='line-height: 24px; margin-bottom:15px;'>

                                            Firstname,

                                        </p>
                                        <p style='line-height: 24px;margin-bottom:15px;'>
                                            Great news, you will now be the first to see exclusive previews of our latest collections, hear about news from the Abacus!
                                            community and get the most up to date news in the world of fashion.
                                        </p>
                                        <p style='line-height: 24px; margin-bottom:20px;'>
                                            You can access your account at any point using the link below.
                                        </p>
                                        <p style='line-height: 24px'>
                                            Love,</br>
                                            The MDB team
                                        </p>

                                    </td>
                                </tr>
                            </table>
                        </td>
                    </tr>





                </table>

            </td>
        </tr>

        <tr>
            <td height='40' style='font-size: 40px; line-height: 40px;'>&nbsp;</td>
        </tr>

    </table>