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Invoice module and UTF-8 in PDF
Currently Invoice module doesn't support UTF-8 export of PDF. This is not so hard to fix, if you installed correctly DOMPDF library, and enabled unicode, and also you have UTF-8 font with your special chars this is what you need to do to fix this.In invoice_helpers.inc file you have a function _invoice_get_html where there is a header of your html that is render in PDF currently it has some errors, there is twice variable "html" defined, second one without any header info so we change this and add something like
Mass Email, Group Email or Newsletter
Thinking of implementing mass email to Drupal as you want to sent emails to your registered user? There are several options you could go with.
Same Email, different Username - What module?
It is the shared email module, that is the answer. As drupal permits one email per user, for testing purpose or site building with many users who didn't give you email address, this is very useful module.
Link to us, banner creation for other sites etc
I usually did this with views, custom content type etc, now there ia module for this
http://drupal.org/project/link_to_us
You'll probably still have more power with views and node types but this is a very good quick solution.
Glossify Internal Links Auto SEO vs Link Inteligence
Both of this modules are still work in progress but you can make good use of them. Currently Glossify is my favourite because it links to taxonomy terms when needed. Link inteligence has maybe a bit better perspective and whole architetture behind SEO Tools module looks very promising but when you use it you won't be satisfied so much with results and links it makes, although there is high level of customization present and also bulk generating of links.
Mailhandler
Today i stumpled upon mailhandler module, cant wait to try it out. Creating content from email client could boost content production in many sites, mainly aiming for classifieds sites and community sites.