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poMMo is versatile mass mailing software. It can be used to add a mailing list to your Web site or to organize stand alone mailings. Unique Features such as the ability to mail subsets of your subscribers set it apart from alternatives.
poMMo calls itself , “The Post Modern Mass Mailer” and it is a system that allows you to setup mailing lists for your website. There are many third party services that provide a similar option, but this one is something you run on your own site and have full control over, which some people will prefer. poMMo is a free option that anyone can use for their site.
This platform had some nice features and options for users, but the developers appear to have stopped working on it as of around 2014 sometimes. Their website is no longer in place, though you can still get this system installed through the one-click installation feature on all InterServer hosting accounts, or through other download sites. The system works pretty well, but if there are no future updates, it will likely become less reliable over time.