I’m a heavy e-mail user, and basically live out of my inbox because of all the companies I deal with an work with. I regularly check 10 accounts several times a day, a few of those several times and hour, and receive hundreds of messages per day. Prior to today, I had all this filtering into Outlook 2003, all via POP3 download, with a few add ons and filters to make my life easier in there. I have been using Outlook for years, so I have several archived PST (Outlook’s storage file) files on my hard drive, but I also have one large PST that is my main working file. I also needed it recently for use with MS Exchange as well as ActiveSync connections with my phone. After all these years, and despite archiving on a regular basis, Outlook just drags more and more. Not only that, but IMAP support in Outlook always seemed like an after-thought. It also was a pain to look up messages if I didn’t have them properly sorted, because Outlook didn’t have built-in indexing of messages (not until 2007, which I don’t have). Third-party indexing solutions seemed to only make the slow-down problem worse, and never seemed to index things properly.
I’d been looking at moving to a different email client for a while, but never did as Outlook has always Just Worked™. But I decided to make the move to Thunderbird, now that it’s mature enough to handle all I could throw at it.
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