QB Issue Resolution:

It is probably on the client’s machine or the PDF is getting garbled on one of the email servers that is being traversed. As SkinnyRaven suggests check your Apple Mail sent folder and see if the PDFs are correct on the outbound message. If they are then the problem is “down the line” somewhere – most likely on the user’s machine or their email service.

Resolution for Issue 'Client receiving corrupt PDFs when emailing invoices' available: Yes (Solved).
Source: Intuit Community forum.

Client receiving corrupt PDFs when emailing invoices: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for Invoice
Quickbooks Repair Pro will resolve it efficiently and affordably. Guaranteed resolution of your issue, or you pay nothing!

Error Recovery for Invoice [Canada]
E-Tech is the #1 Quickbooks data migration and Conversion service provider.

Get 50% off Quickbooks Online

Click Here for 50% off!

Additional Support Options: