I help family and friends stay connected through IncrediMail. It is so rich in features they want nothing else. But it is not all to the good. On the pro side, even the free version is more than adequate for most users. Lots of visual and audio effects are included, and it readily displays the content of received emails that contain both. You do get more with the paid version, but not everyone needs or wants the extras.
There are a number of cons, or negatives. While you can import emails and address books from other email clients, they may it about impossible to go the other way. So once on IncrediMail, you are pretty much stuck with IncrediMail unless you want to start all over with your emails.
IncrediMail is definately unsecure. Anyone with access to your computer can get into your email, read it, do whatever they want with it, and that is just a given. But at the same time, if you set up IncrediMail on two or more PCs for the same account, there is no way provided to synchronize or merge what you might have on several machines. That can be a real hinderance.
There is a way to move all your email (I mean everybody's) from one PC to another, and it is pretty easy to do, and involves the words old computer and new computer. Trouble is, what you bring to the new computer will replace what you already have there in the same account names. No merge capability. No way to check for duplicates and rid yourself of the execess if you were to try manually to send everything over. And no way to forward a bunch of emails at once, you must do one at a time.
Address book is okay, to a point. You are suppose to have group mailing support, but to set up a group, like for a PTA or Church, you have to first enter all the names by hand into your main address portion, then transfer them over. You can't just enter a list or contents of an email header into a group.
The paid for version might be better in some of these respects, but how can you tell when no list of all the added features and improvements is provided?
Something else about IncrediMail. It bothers me when a source fails to provide a contact or address for the reporting of bugs and problems. So I end up putting a list of my own here in hopes that somebody somewhere will pay attention.
I hate writing an email response. Know why? Because Cut and Paste, or Copy and Paste, just don't work on either the text or the header portions. It says it should, but only if you go up under Edit and click on your choice. But if you try to transfer the addressees in a header, all the < and > actual address contents get lost when pasted into the outgoing To or CC fields. And you cannot cut or copy from an incoming email at all, you must initiate a reply and try there to even get that far.
What is common practice elsewhere is not common to IncrediMail, and that can be very frustragting. Oh, another thing. You are suppose to have insert and attach as two choices, insert means put in the text portion of your email. But on my last effort to do an insert, it just attached the file instead.