Test Apex sending mail with .getContent()
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test fails because of TestMethod do not support getContent call
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How to set the content type on the servlet
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How can I send an email by Java application using GMail, Yahoo, or Hotmail?
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Sending Email using java program
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Received multiple email from apex trigger
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How do I test asynchronous Apex?
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How to develop and test an app that sends emails (without filling someone's mailbox with test data)?
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Send HTML email via C# with SmtpClient
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How to send HTML email
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How to test and actually perform a transfer of an internet domain to a new server regarding mail?
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APEX Unit tests hello world
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Is mail testing with selenium possible?
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Use Opportunity fields to send dynamic email content in Marketing cloud
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Send Email using Javascript
121345
send html email using php deliver message as html code
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Passing custom string into a Salesforce email template.
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Setting a from address in SingleEmailMessage