You can attach any type of file to an email message, such as a PDF, JPG or XLS. Some recipients may block potentially dangerous types of attachments like EXEs though.

Use the iPad's built-in iBooks application to attach a PDF document to an email. To do this, your computer must have at least iTunes 10.1 installed and your iPad must have at least iOS 4.2 installed.

It's easy to attach a file in an iPhone email using the new format bar in Mail with iOS 13, or in the Gmail app. Here's how to do both.

If you are unable to attach files to an email in Outlook.com or Outlook app, you can follow these solutions to get rid of the problem instantly.

You can attach a folder to an email in Microsoft Outlook to send several files all at once by compressing the folder into a zip file.

Send an email to this address, typing Convert for the subject line and attaching the PDF you’d like to read.