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+### Mailman
+* Website : https://www.gnu.org/software/mailman/index.html
+* Dockerfile : No
+* Android app : No
+* iOS app : No
+* Language : Python
+
+### Postal
+* Website : https://github.com/atech/postal
+* Dockerfile : No
+* Android app : No
+* iOS app : No
+* Language : Ruby on Rails
+
+### Sympa
+* Website : http://www.sympa.org/
+* Dockerfile : No
+* Android app : No
+* iOS app : No
+* Language : Perl