How to downgrade to ver. 2.6 ?

I updated to version 2.7 without reading instructions and I discovered that ver. 2.7 doesn’t work on system 10.3.x
Where can I download the previus version, compatible with my system ? Exploring the site I could only find and download ver. 2.7.

Thank You
Nicola

Here’s the link to download SpamSieve 2.6.6.

ok, it’s working
Thank you for the the link. Now your excellent program is working again.
Thank you and good work.
Nicola

Windows version ?
Hello again,
why don’t you make a windows based spamsieve version ?
I would buy it immediately.
Good work
Nicola

I’d rather spend my time developing Mac software.