Install altermime by entering the following commands in the terminal:
sudo apt update sudo apt install altermime
utility used to alter mime-encoded mailpacks
alterMIME is a small program which is used to alter your mime-encoded mailpacks as typically received by Inflex, Xamime and AMaViS. . alterMIME can: * Insert disclaimers; * Insert arbitrary X-headers; * Modify existing headers; * Remove attachments based on filename or content-type; * Replace attachments based on filename.