Can you paste links or add attachments to invitations?

• You can send files as attachments to LinkedIn messages.
• The following file types can be attached:
• Documents CSV, XLS, XLSX, DOC, DOCX, PPT, PPTX, PDF, TXT, HTML, HTM
• Images - GIF, JPEG, JPG, PNG, BMP
• The total file size cannot exceed 20 megabytes.
• To send a message with a file attachment, follow these steps:
• At the top of your LinkedIn homepage, click the Messaging symbol.
• On the left rail, click the Compose icon.
• Make a note of the recipient's name.
• In the text area, write your message.
• To attach a picture, click the Image icon, or to attach a document, click the Attach symbol.
• You can also attach a file by dragging it from your PC to the message box.
• Locate the file you want to include and select it.
• Send your message after you've finished composing it.

Read More: Should you delete your old Boards in Pinterest?