app-MAIL-temp/templates/emails/_emailhelpers.html

{% macro render_text(text) %}
  <p style="font-size: 16px; line-height: 1.625; color: #51545E; margin: .4em 0 1.1875em;">{{ text }}</p>
{% endmacro %}

<!-- To be used instead of render_text, much better! -->
{% macro text() %}
  <p style="font-size: 16px; line-height: 1.625; color: #51545E; margin: .4em 0 1.1875em;">{{ caller() }}</p>
{% endmacro %}

{% macro render_button(button_text, link) %}
  <!-- Action -->
  <table class="body-action" align="center" width="100%" cellpadding="0" cellspacing="0" role="presentation"
         style="width: 100%; -premailer-width: 100%; -premailer-cellpadding: 0; -premailer-cellspacing: 0; text-align: center; margin: 30px auto; padding: 0;">
    <tr>
      <td align="center" style="word-break: break-word; font-family: Helvetica, Arial, sans-serif; font-size: 16px;">
        <!-- Border based button
https://litmus.com/blog/a-guide-to-bulletproof-buttons-in-email-design -->
        <table width="100%" border="0" cellspacing="0" cellpadding="0" role="presentation">
          <tr>
            <td align="center"
                style="word-break: break-word; font-family: Helvetica, Arial, sans-serif; font-size: 16px;">
              <a href="{{ link }}" class="f-fallback button" target="_blank" rel="noopener"
                 style="color: #FFF; border-color: #3869d4; border-style: solid; border-width: 10px 18px; background-color: #3869D4; display: inline-block; text-decoration: none; border-radius: 3px; box-shadow: 0 2px 3px rgba(0, 0, 0, 0.16); -webkit-text-size-adjust: none; box-sizing: border-box;">
                {{ button_text }}
              </a>
            </td>
          </tr>
        </table>
      </td>
    </tr>
  </table>
{% endmacro %}

{% macro raw_url(link) %}
  <!-- Sub copy -->
  <table class="body-sub" role="presentation"
         style="margin-top: 25px; padding-top: 25px; border-top-width: 1px; border-top-color: #EAEAEC; border-top-style: solid;">
    <tr>
      <td style="word-break: break-word; font-family: Helvetica, Arial, sans-serif; font-size: 16px;">
        <p class="f-fallback sub" style="font-size: 13px; line-height: 1.625; color: #51545E; margin: .4em 0 1.1875em;">
          If you’re having trouble with the button above, copy and paste the URL below into your web browser.</p>
        <p class="f-fallback sub"
           style="font-size: 13px; line-height: 1.625; color: #51545E; margin: .4em 0 1.1875em;">{{ link }}</p>
      </td>
    </tr>
  </table>
{% endmacro %}

{% macro grey_section(parts) %}
<table class="attributes" width="100%" cellpadding="0" cellspacing="0" role="presentation" style="margin: 0 0 21px;">
  <tr>
    <td class="attributes_content"
        style="word-break: break-word; font-family: Helvetica, Arial, sans-serif; font-size: 16px; background-color: #F4F4F7; padding: 16px;"
        bgcolor="#F4F4F7">
      <table width="100%" cellpadding="0" cellspacing="0" role="presentation">
        {% for part in parts %}
          <tr>
            <td class="attributes_item"
                style="word-break: break-word; font-family: Helvetica, Arial, sans-serif; font-size: 16px; padding: 0;">
              <div class="f-fallback">
                {{ part }}
                <br />
                <br />
              </div>
            </td>
          </tr>
        {% endfor %}

      </table>
    </td>
  </tr>
</table>
{% endmacro %}