Due to an outage at Amazon AWS, some users might be experiencing issues with attachments. Amazon has informed us that they are working to resolve this as soon as possible.
We'll update you as soon as we can confirm that Amazon has resolved this.
As always, please don't hesitate to contact us if you have any questions.
Update - 28/02/17
AWS has reported that the issue affecting much of the web has been resolved. We can confirm that Sendible should be back to normal now. Please submit a ticket if you encounter any further issues.