Unable to display e-mail attachment (.csv file) in mailslurper

[gerick11]

When attempting to view an attachment to an email in MailSlurper, the attachment won't open and the following is displayed:
{"success":false,"message":"Cannot decode attachment"}

[adampresley]

So I created a test with a basic CSV file (see attachment below) and sent it as a type text/csv attachment and everything went through fine. Can you perhaps attach a sample or describe what might be special about the CSV or mail sending process? Please ensure there is no divulge any sensitive personal or corporate information.

[adampresley]

Ok, after investigating the issue with you I see the following issues that I will work to correct.

• The content type of this CSV attachment was application/octet-stream. This is a problem with the sender, but should not necessarily be a show stopper for MailSlurper
• The attachment controller in the service is attempting to Base64 decode the attachment, regardless of if the attachment is actually base64 encoded or not. This is a bug in MailSlurper

I will work to address this bug. For the base64 encoding question, since I cannot rely on the content type, I will use the following to determine if I should attempt a decode or not.

• Check if the content length is a multple of 4 (length % 4 == 0)
• Validate against a regex like this for base64 allowed characters: ^[A-Za-z0-9+/=]+\Z

[gerick11]

Thank you so much for the prompt response and resolution.