E-mail Based

• ERA  - Centralized email RSS aggregator. Since this is subscription based, it eliminates the need for running aggregator applications.
• Feed My Inbox  - Accepts RSS, XML, and Atom links and emails the user as the feed updates.
• Feed2Imap  - Uploads aggregated RSS and Atom feeds to an IMAP mail server to be accessed with Mutt, Evolution, or Mozilla Thunderbird.
• Feed2Mail  - Email service that sends feeds to targetted users via email. Requires no software to download and install.
• MyBlog Alerts  - Provides an easy way for updating with the news that matter. Runs for free and simple registration with no software to download.
• Newspipe  - RSS and Atom aggregator that allows users to keep track of feeds via email, developed from an RSS-to-POP3 converter.
• RSSknip  - Subscription-based RSS to mail gateway. Eliminates the need to understand and install RSS readers to keep track with all RSS feeds.