Working in LibreOffice, you can send the current document as an email attachment.
Choose File - Send - Email Document.
LibreOffice opens your default email program. If you want to send the current document with another email program, you can select the program to use with Internet - Email in the Options dialog box.
In your email program, enter the recipient, subject and any text you want to add, then send the email.
In case you want to send the email to a recipient who only has software that cannot read the OpenDocument format, you can send the current document in an often used proprietary format.
For a text document, choose . For a spreadsheet, choose . And for a presentation, choose .
If you want to send the document as a read-only file, choose .
These commands do not change your current document. Only a temporary copy is created and sent.