The procmail mail processing program can be used to create mail-servers, mailing lists, sort your incoming mail into separate folders/files (real convenient when subscribing to one or more mailing lists or for prioritising your mail), preprocess your mail, start any programs upon mail arrival (e.g. to generate different chimes on your workstation for different types of mail) or selectively forward certain incoming mail automatically to someone. Procmail can be used: - and installed by an unprivileged user (for himself only). - as a drop in replacement for the local delivery agent /bin/mail (with biff/comsat support). - as a general mailfilter for whole groups of messages (e.g. when called from within sendmail.cf rules). The accompanying formail program enables you to generate autoreplies, split up digests/mailboxes into the original messages, do some very simple header-munging/extraction, or force mail into mail-format (with leading From line).
The procmail mail processing program can be used to create mail-servers, mailing lists, sort your incoming mail into separate folders/files (real convenient when subscribing to one or more mailing lists or for prioritising your mail), preprocess your mail, start any programs upon mail arrival (e.g. to generate different chimes on your workstation for different types of mail) or selectively forward certain incoming mail automatically to someone. Procmail can be used: - and installed by an unprivileged user (for himself only). - as a drop in replacement for the local delivery agent /bin/mail (with biff/comsat support). - as a general mailfilter for whole groups of messages (e.g. when called from within sendmail.cf rules). The accompanying formail program enables you to generate autoreplies, split up digests/mailboxes into the original messages, do some very simple header-munging/extraction, or force mail into mail-format (with leading From line).
To install procmail, run the following command in macOS terminal (Applications->Utilities->Terminal)
sudo port install procmail
To see what files were installed by procmail, run:
port contents procmail
To later upgrade procmail, run:
sudo port selfupdate && sudo port upgrade procmail
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