Amavis::Custom survey

Hello amavis users,

I would like to ask those of you who have an own Amavis::Custom 
implementation,
how your code interacts with Amavis internals and what your code's 
assumptions are.

There is currently no convention how much or little can be changed in
Amavis::Custom context without breaking someones implementation of it.

Feedback on the mailing list or [1] is welcome.

Thanks.

[1] https://gitlab.com/amavis/amavis/issues/117