[SalesForce] Adding logo in visual force email template

I am using a vf email template. I understand to use logo in a vf template i cannot leverage static resources, rather have to keep the logo in documents folder.
But how can i dynamically access the url of the image from the document folder in the template so that the template can be deployed to higher orgs

Best Answer

Refer to: https://help.salesforce.com/apex/HTViewSolution?urlname=Why-images-stored-as-static-resources-cannot-be-seen-in-emails-sent-using-VF-email-templates-1327108316482&language=en_US

It states:

To solve this problem, images should be stored in documents and with "Externally Available Image" checked. The image will be available by using the following markup:

<apex:image id="theImage" 
value="https://c.<instance>.content.force.com/servlet/servlet.ImageServer?id=<document_id>&oid=<organization_id>" 
width="200" height="200"/>

Save the instance value in a custom setting and refer the value dynamically inside url..

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If you have power users that are determined enough they might still be able to navigate to the template by shortening the URL from
```
/email/author/emailauthor.jsp?retURL=/{!Opportunity.AccountId}&
rtype=003&p2_lkid={!Opportunity.AccountId}&
template_id=00X60000001euod
```
to
```
/00X60000001euod
```
(no idea if it'd give them "insufficient privileges").
The behaviour described in your "Update 1" sounds to me like some kind of security flaw that SF might decide to fix in future. I'm not sure I'd count on something like this in a production-ready functionality. Maybe simply raise a Case with support whether it's intended behaviour?
If it's acceptable to just fire the email as is (without user being able to preview & modify the body) maybe you can experiment with adding &save=1 to the URL. Still - a determined user might inspect the source of the button and learn the template id.
You could also consider a "do it yourself" solution with a bit of Apex? Both single and mass email objects have setTemplateid() method you could use. You can query the EmailTemplate object for IDs.

[SalesForce] vf email template – detail Link

I don't know if there is a "clean" way to do this. But this seems to be a fairly popular hack:

<a href="{!LEFT($Api.Partner_Server_URL_280, FIND(".com/",$Api.Partner_Server_URL_280)+3)}/{!relatedTo.Id}">
    {!relatedTo.Name}
</a>

Best Answer

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[SalesForce] vf email template – detail Link

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