Cannot Attach PDFs or Files

The native Apple mail program can do more than this app. You can only attach a photo or links with Envelope. One cannot attach files or PDFs. I had hoped this program would have been better, but I am glad it was only 1.99 that I wasted. I plan to delete this app and just stay with Apple mail.

wah0995 about Envelope - Unified Inbox Email, v1.6.1