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What is the difference between sending a mass email once and sending a single email multiple times. What are the pros and cons?

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Are you referring to sending the emails from Apex, or from the UI? – zachelrath Nov 20 '12 at 16:09
up vote 5 down vote accepted

Mass Emailing


  1. Is generally faster for the user (you go through a wizard once instead of once per contact.)


  1. Cannot customize the email template on a per-contact basis
  2. Might not be able to create a filter to select the recipients
  3. Visualforce email templates cannot be used

Individual Emailing


  1. Can customize the email template before sending if you select a text template
  2. Does not require Extended Mail Merge to be activated
  3. Does not require a filter to select recipient


  1. Time consuming for a large number of emails
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I think a big difference is that you can't use a visual force template for mass email. So you have to use individual email. I was wondering is there any difference in limits? – dublintech Nov 20 '12 at 16:26
I added that con, @dublintech, but if you think of others feel free to update this answer - that's why I marked it as a community wiki. – Mike Chale Nov 20 '12 at 17:32
+1 .I love simple answers than making stuff complex – Mohith Shrivastava Nov 20 '12 at 17:42
@Mike Chale great idea. – dublintech Nov 21 '12 at 10:13

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