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this question: says that it is "hard" to put a component inside a visualforce email template because ' needs to be a child of component.'. Yet, is there a way to make this work?
We also need to stick to using the visualforce email template and cannot send the email in a different way. The object on which the email template is running has attachments. How can this be done?
I don't think you can do it with pure email template, you'll need some Apex, as suggested in other answers.
<messaging:emailTemplate> complains as soon as you'd try to stick <apex:repeat> in there (for example to create <messaging:attachment> nodes in a loop).
Even if you could - try referring to {!relatedTo.Attachments[0].Body} somewhere (can be in the plaintextBody tag), you'll get an error:
Binary fields cannot be selected in join queries
I think the closest it can get is to create the links to attachments (and if I recall correctly - SF converts attachments > 3 MB to links anyway).
<messaging:emailTemplate subject="hello" recipientType="Contact" relatedToType="Opportunity">
<messaging:htmlEmailBody >
<p>This will list link to attachments... it's not a perfect solution but it's something.</p>
<apex:repeat value="{!relatedTo.Attachments}" var="a">
<p><a href="{!URLFOR($Action.Attachment.Download, a)}">{!a.Name}</a> ({!a.BodyLength} B)</p>
</apex:repeat>
</messaging:htmlEmailBody>
<messaging:plainTextEmailBody >
<apex:repeat value="{!relatedTo.Attachments}" var="a">
{!a.Name} {!a.ContentType} {!a.Body} <!-- this "Body" reference causes the compilation to fail -->
</apex:repeat>
</messaging:plainTextEmailBody>
<!--
<messaging:attachment filename="{!relatedTo.Attachments[0].Name}" renderAs="{!relatedTo.Attachments[0].ContentType}">
{!relatedTo.Attachments[0].Body} :(
</messaging:attachment>
-->
</messaging:emailTemplate>
see this http://www.salesforce.com/us/developer/docs/pages/Content/pages_email_templates_with_apex.htm.
Hope it may helpful
user670186,
Not sure if this is the answer you're looking for but here's my thoughts:
If you have a VF template ready, and if consider using messaging.singleemailmessage methods to send the email, you can - Use mail.setTemplateId to take the visualforce as template - Use Messaging.EmailFileAttachment to attach the file in the email.
