Dada Mail v5 rc3 is out the door Go ahead and install it:

http://dadamailproject
com/support/documentation-5_0_0-rc3/install_dada_mail
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Or, heck, upgrade:

http://dadamailproject
com/support/documentation-5_0_0-rc3/upgrade_dada_mail
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Changes between v4 and v5:

http://dadamailproject
com/support/documentation-5_0_0-rc3/dada4_to_dada5
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If you currently have a Pro Dada installation by me and are within your current year of upgrades, please let me know, I'm pretty comfortable upgrading people to v5 and you'll be happy to start using it, sooner, rather than later! :) I basically need to just update the screencasts and (slowly) revise the online Manual v5 stable will be released before I'll ever finish that,

And the 5 x changelog (pasted below as well)

http://dadamailproject
com/support/documentation-5_0_0-rc3/changes_5_x
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Summary 5 0 0

Bounce Handler

This release of Dada Mail features the continuing work on the Bounce Handler This round of enhancements centers around a new sublist called, "Bouncing Addresses" (or, "bounced_list", internally) You may now direct the Bounce Handler to move addresses that have reached the Bounce Score Threshold to this list, instead of outright removing them from your Subscribers

From there, you may view the bounced history of each bouncing address and either permanently remove the address from your mailing list, or reinstate the address as a subscriber

New View Screen

This release of Dada Mail also features a clean-up of the, "View" screen in Dada Mail These changes are to help a list owner feel more in control over their mailing list, by making the various mailing lists more malleable to work with

Members of all sublists can be easily browsed through using enhancement pagination links - first, last, previous, next pages (etc), as well as more organized searching, that features the same refined user interface The data can now be sorted alphabetically, ascending or descending by email address or by any of the profile fields

New Address Membership Screen

Individual subscribers can now be more easily administrated From each subscriber's membership screen, you can now see all the sublists an individual address is a member of and move the address to and from various sublists A running history of the addresses membership is also available

Recent subscription/unsubscription activity is also now easily viewed in a new admin screen titled, Recent Activity which currently shows the last 100 seperate events that have happened in your mailing list

Mass Mailing Preferences

Sending a Copy to the List Owner

You may now enable or disable sending a copy of Mass Mailings to the List Owner

Bugfixes 5 0 0

notification error on discussion list

https://github com/justingit/dada-mail/issues/255

Changes 5 0 0

Precedence header

Setting the Precedence header and customizations to that header have been removed in Dada Mail, in an attempt at simplifying things

The Precedence header is still set in Dada Mail by default and given a value of, list