Features include an address book; custom account groups; indexing of all message contents, including images and links; customizable tags; viewing by topic or thread; archiving; phishing and malware protection; quick filtering (e.g.
"Today" or "Not Replied"); gesture support; a favorites bar; canned responses; to-do tagging (flags); summarized replies; subject editing; favorite contacts; add-ons (including Cloud File Sharing for large files, calendar support, encryption and others); Spam Sieve support and more.
A recent update brought new capabilities in conjunction with mac OS 10.13 High Sierra's new APFS file system, promising "Time Machine-like restoration from bootable APFS copies." Super Duper 3.1.4 is priced at .95 for OS X 10.10 and up.
(Older versions support systems as early as Mac OS X 10.2.) In trial mode, prior to purchase, Super Duper can clone a drive but lacks Smart Copy and other features when unregistered.
While add-ons may operate in this release, note that support for add-ons will be eventually discontinued.
Postbox is based on Mozilla code, and as of Firefox Quantum, Mozilla has discontinued support for add-ons.
It learns what spam looks like and what good messages look like, using "Bayesian" analysis to improve its filtering and blocklist (which can be viewed and edited, if necessary).
Spam Sieve 2.9.30 is priced at for mail clients running in OS X 10.7 and up, with a free trial available.
This version of Postbox contains an entirely new foundation.
Mac In Touch discussions include the following topics, among others: Postbox is a full-featured, cross-platform email client from Postbox, Inc.
(derived from Mozilla Thunderbird code), and it also functions as an RSS blog reader.
Hands Off monitors applications and uses notifications and configuration rules to control what they can access.
You can choose among default presets for ease of use or more detailed configuration options.