Creating a dynamic email template

Question

I have a batch which I use to send emails to contacts.

Every contact should have a different template - So I Created a body and subject in my apex class which every contact will have his unique body- for Example:

Messaging.SingleEmailMessage email = new Messaging.SingleEmailMessage();
            String body = '';
            email.setSenderDisplayName('someName');
            email.setSubject('someName');
            body+= proposalInformation(Some SObject);
            email.setHtmlBody(body);


private String proposalInformation(SObject a){
       body+='';            
            body+='<div>';
            body += '<p style="font-weight:bold; color:red; text-align: center;">' + a.Typo__c  +  '</p>' ;
            body+= '</br></br>';
            body += '<p style="font-weight:bold; text-align: center;">' + a.FirstName__c  +  '</p>' ;
            body+= '</br></br>';
            body+= '<p style="text-align: center;">Submission Deadline : ' + a.date_and_time__c + '</p>';
            body+= '</br></br>';
            body+= '<p style="text-align: center;"> Description : ' + a.Description__c+ '</p>';
            body+= '</br></br>';
            body+= '<p style="text-align: center;">Amount  : ' + a.Total_amount__c+ '</p>';
            body+= '</br></br>';
            body+= ' <p style="text-align: center;">Links : ' + a.link__c+ '</p>';
            body+= '</br></br>';
            body+= '<p style="text-align: center;"> ---------------------------------------------------------- </p>';
            body+= '</br></br>';
            body+='</div>';

  return body;
}

If I want to add a global < style > < / style > and than add a class to the divs instead of the inline css, how can I do it?

For example:

<style>
  .cc{
    color:"red";
  }
</style>

and then : body += '<p class="cc">' + a.Typo__c + '</p>' ;

Is that a way to involve Bootstrap here for pretty border around the email?

Is there a way to define an email template and in the code just replace the body?

Thanks in advance.

Answer 1

Firstly, Create the custom HTML email template where you can easily apply css and use the merge field like '{!Status}' into the template.

In apex, query this email template and get the body into string variable. Then replace the string with dynamic data.