Missing header with logo in emails

[liaham]

What I have expected:

I expect to get emails with a header containing the logo image as implemented in lib/Email/EMailTemplateNC20.php :

Appointments/lib/Email/EMailTemplateNC20.php

Lines 71 to 94 in 961e2e3

	protected $header = <<<EOF
	<table align="center" class="wrapper header float-center" style="Margin:0 auto;background:#8a8a8a;background-color:%s;border-collapse:collapse;border-spacing:0;float:none;margin:0 auto;padding:0;text-align:center;vertical-align:top;width:100%%">
	<tr style="padding:0;text-align:left;vertical-align:top">
	<td class="wrapper-inner" style="-moz-hyphens:auto;-webkit-hyphens:auto;Margin:0;border-collapse:collapse!important;color:#0a0a0a;font-family:Lucida Grande,Geneva,Verdana,sans-serif;font-size:16px;font-weight:400;hyphens:auto;line-height:1.3;margin:0;padding:20px;text-align:left;vertical-align:top;word-wrap:break-word">
	<table align="center" class="container" style="Margin:0 auto;background:0 0;border-collapse:collapse;border-spacing:0;margin:0 auto;padding:0;text-align:inherit;vertical-align:top;width:580px">
	<tbody>
	<tr style="padding:0;text-align:left;vertical-align:top">
	<td style="-moz-hyphens:auto;-webkit-hyphens:auto;Margin:0;border-collapse:collapse!important;color:#0a0a0a;font-family:Lucida Grande,Geneva,Verdana,sans-serif;font-size:16px;font-weight:400;hyphens:auto;line-height:1.3;margin:0;padding:0;text-align:left;vertical-align:top;word-wrap:break-word">
	<table class="row collapse" style="border-collapse:collapse;border-spacing:0;display:table;padding:0;position:relative;text-align:left;vertical-align:top;width:100%%">
	<tbody>
	<tr style="padding:0;text-align:left;vertical-align:top">
	<center data-parsed="" style="min-width:580px;width:100%%">
	<img class="logo float-center" src="%s" alt="%s" align="center" style="-ms-interpolation-mode:bicubic;Margin:0 auto;clear:both;display:block;float:none;margin:0 auto;outline:0;text-align:center;text-decoration:none" height="50">
	</center>
	</tr>
	</tbody>
	</table>
	</td>
	</tr>
	</tbody>
	</table>
	</td>
	</tr>
	</table>

What I have observed instead:

When sending an email with a scheduled appointment which is awaiting the users confirmation there is no logo:

When I look into the emails source code there is no header at all.

How to solve the problem:

Overriding the email template via mail_template_class does not change anything. In contrast extending the nextcloud mail template works.

Probably the reason is outside of the lib/Email/EMailTemplateNC20.php file. Investigating this is beyond my capabilities.

Technical details:

Tested with

• nextcloud 26.0.2 and 28
• appointments 1.15.2

[svtcpx]

Where are you receiving this email? If it's a client, check to see how HTML is rendered. I've had odd email issues until I discovered that I had "Basic HTML" enabled so it was perfectly expected behaviour :)

[liaham]

This is a good point! Meanwhile I have coded an overwritten email template that solved my problem.

Therefore, I cannot reproduce the problem to check if the configuration of my email client could be the reason. If so, then I would expect other nextcloud emails to behave the same way. And this was not the case.

Thank you for your contribution anyway! :)