Manila Envelope 1.0 for Mac can be downloaded from our website for free. The application lies within Internet & Network Tools, more precisely General.
From the developer:
Native, simple Mac OS X app that allows posting to your weblog without a browser. Many other cool scripts at my website.
You may want to check out more software for Mac, such as EnvelopeCat - Envelope Printer, Simple Envelope or Envelope, which might be similar to Manila Envelope.