Strip or modify URLs in mails - how?

[Damian]

>  but it is a C program and I am no C programmer ...
>
Do you like Perl better? You can use the before_send-hook inside your
own Amavis::Custom [1] implementation. One caveat though is that one
cannot modify a multi-recipient message differently for different
recipients inside that hook.

[1] https://gitlab.com/amavis/amavis/raw/master/amavisd-custom.conf