Why some times I can not email my files?

[comcsoft]

Please check the size limit of your email provider for attachment. Most email providers do not allow big file attachments. ( files bigger than 10MB). Even the App sends your files, but your email provider removes the attachment due to size restriction.

We do not recommend to send big files through email. Instead, we recommend to send big files through Dropbox, or FTP server through iTransfer.