I have a set customer profile, I sent a simple invoice by email and it went through. When i am trying to send an invoice with multiple attachments it wont send. Why?

Hi there,

Thanks for reaching out to us here. It's essential you're able to send invoice emails to your customers without any issues. Don't worry, I'll be happy to steer you along the right path. 

To get started, are you getting an error when trying to send the email? Normally, an error message helps point out what's preventing the emails from sending. I encourage you to check out the following article with more info about: Solutions for when customers aren't receiving your emails in QuickBooks Online. 

I look forward to hearing back from you in the comments below.