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My case is i want to send email with attachment in custom object using single email message using HTML Email Template (with letterhead).

Current condition i successed to make the email same like email template (HTML body) by using these methods:

email.setToAddresses(emailResults);
email.setTargetObjectId('0055D000001DHyJ'); //user id
email.setTreatTargetObjectAsRecipient(false);
email.setTemplateId(tem.Id);

But the problem is, fields in email template become blank. For Example:

Email template

Dear {!Invoice__c.Customer},

Result

Dear ,

I also try use .replace but it make email body become blank.

Is there any solution or workaround for this case?

Refference : http://hareeshgoudsalesforce.blogspot.com/2016/06/stop-sending-email-to-settargetobjectid.html

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  • Is the setTargetObjectId being set to a User or Contact or Lead ?
    – Robs
    Jul 11, 2018 at 11:18
  • Hi, its working now. I post the code at 2nd answer below. So for custom object you should put setTargetObjectId as ContactId
    – PoH
    Jul 11, 2018 at 12:13

2 Answers 2

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I am not sure exactly what your goal is and the blog post is very confusing to me.

What I understand is: {!Invoice__c.Customer} needs to be filled in the result.

For this case, the WhatId should be of Type Invoice__c and you should be using the appropriate template methods:

email.setToAddresses(emailResults); email.setTargetObjectId('0a3xxxxxx'); //<= user / recipient id email.setWhatId('0a3xxxxxx'); // <= Invoice Id email.setTreatTargetObjectAsRecipient(false); email.setTemplateId(tem.Id);

setWhatId(WhatI)

If you specify a contact for the targetObjectId field, you can specify an optional whatId as well. This helps to further ensure that merge fields in the template contain the correct data.

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  • Hi, thanks for your respond. I try to replace using Invoice ID in setTargetObjectId but it give error message "SendEmail failed. First exception on row 0; first error: INVALID_TYPE_FOR_OPERATION, Only User, Contact, Lead, or Person objects are allowed for targetObjectId: a045D000009HDVm.: [targetObjectId, a045D000009HDVmQAO]"
    – PoH
    Jul 11, 2018 at 11:05
  • My goal is want to fill the fields in HTML Email template using single email message, .setReplace() not working for this case :(
    – PoH
    Jul 11, 2018 at 11:07
  • sorry, i mixed something up. see my edited answer.
    – Christian Szandor Knapp
    Jul 11, 2018 at 11:16
  • Now i get this error 'SendEmail failed. First exception on row 0; first error: INVALID_ID_FIELD, WhatId is not available for sending emails to UserIds.: [whatId, a045D000009HDVm]'. FYI i write email.setWhatId(d.id)
    – PoH
    Jul 11, 2018 at 11:25
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    Updated: I input TargetObjectId as ContactId and input WhatId as CustomObjectId. And its work bro, thanks for your help. Appreciate it!
    – PoH
    Jul 11, 2018 at 11:46
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email.setToAddresses(emailResults);
 email.setTargetObjectId('0035D00000Rc4bU'); //contact id (you can do soql)
 email.setWhatId(d.id); // custom object id
 email.setTreatTargetObjectAsRecipient(false);
 email.setTemplateId(tem.Id);

Updated : Final solution

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