Does Stop Spam Plugin add to domain spf record?

We are in the process of cleaning out our spf record which has grown well beyond its limit. This plug in works great and were about ready to get the paid version, however, we do have to clean up the existing spf record. Does this plugin affect or add to the spf record? There is a rather large mail gun presence and I’m hoping this plugin has nothing to do with it.

Thanks!

Larry T