Postbox is pretty good, and would have been the solution to my mail client woes, except that:<p>* even after you&#x27;ve paid for the product, the only way to get support is to pay $10 for every question you want to ask, however basic or advanced it is - and you&#x27;ll need support, because...<p>* there&#x27;s erratic unpredictable behaviour at many places; is it some subtle bug in the software? or is it some weird about:config option that you have to set to get things working as expected? Who knows! If you&#x27;re lucky, you&#x27;ll find a solution in the Thunderbird forums that works. Often though, that dialog option has been removed from Postbox or that about:config option no longer does anything, and...<p>* the documentation is no help. It&#x27;s no worse than the average startup&#x27;s help pages, except in this case, as mentioned above, there&#x27;s <i>no support</i> - so you&#x27;d expect that to be compensated with exhaustive documentation, but no such luck. The docs cover just the most basic cases and leave all the complex interactions of emailing to your own guesswork. Also...<p>* the devs avoid users like the plague. The only-paid-support thing is (explicitly stated as) a consequence of this, but this even extends to bug reports and feature requests - which are free of cost to submit, but the two bug reports (and one or two feature reqs) I submitted were met with only gaping silence. The interaction on Facebook and Twitter too seems limited to version announcements and rare one sentence replies.<p>I really wanted to like Postbox, for it to be the solution, because it was quite a good product with advanced capabilities and a quite reasonable cost. But it didn&#x27;t seem like a reliable option for the long run given these limitations.