One of the great tools from LibreOffice that I use regularly, it the mail merge function from Writer. Preparing a text, adding field of your data source, and via the neat Python-coded wizard you can send all those document via e-mail. Personalised. The same can be done with HTML formatting and even PDF files that will be handled as attachment.
Until recent however, there was a nasty limitation with the use of HTML formatting for sending the emails: images were not embedded. So no use of good pictures and graphics in the mails..
After this, you understand that I'm really delighted to see that in the upcoming LibreOffice 4.2.0 the embedding of graphics in HTML-mail will be possible.
This thanks to Edmond Ciorba and Andras Timar. Kudoos guys :)
Rough information on these, and other features for LibreOffice 4.2.0 is on the wiki.
Note that beta 2 for the 4.2.0 is available and that very soon the first release candidate will be spread. Pls download this (mind parallel installation) and do your testing of existing and new features!
Finaly a nice picture of one of the improvements in the (Windows) user interface.