So, we got ourselves an update. Download from plugin page.
The anti inline plugin now has a preference pane, update notification and other additions such as:
When this is turned on the plugin operates the way it used to when it was free. In short, everything turns to attachments, no support to leave signatures inlined.
Display signatures inlined
When composing you see your signature images inlined and not as icons. Regardless of this setting your recipients get signatures inlined.
Multiple signature images
You can now have multiple images in your signature, for example icons for facebook, twitter, web, etc. All you have to do is rename images you use in signatures to contain "email-signature" text. Some examples:
Situation with disappearing attachments that occured in some cases is resolved.
On what will the development focus be next, you ask?
Single task: disabling Mail app auto preview feature / when we receive attachments (or browse our sent email) we don't want them to auto preview.
So stay tuned! And thank you all for awesome support and feedback!