Not content with controlling a majority of the market for online search and search-related advertising, Google has been rolling out add-ons to its online hegemony over the past year or so, including GTalk, Google Analytics and so on. And the most recent – not including the hideous and lame Google Page Creator – was the addition of a hosted email and domain service, which The Scobleizer got all upset about for some reason.

But there’s more. Garett Rogers, the ZDNet columnist who first spotted evidence of the hosted email solution — hidden inside the Javascript code that underlies Google’s Gmail webmail service — has found something else in the entrails of Google’s programming. It appears to be the precursor of a voicemail offering Google plans to roll out, which would make sense considering that voice-over-Internet calling is part of its GTalk service. What would make more sense than bundling instant messaging, voice calling and voice messaging into one web-based application?

So let’s think about that for a minute. Email, contact manager, voicemail, instant messaging all integrated into one app. What is it missing? If it were Microsoft’s Outlook, it would be missing a calendar, so you could schedule things with all your business or social contacts. So where’s the calendar, Google? It has been much rumoured in the past, and rumours have sprung to life again more recently.

Will Google do it? It seems like a natural fit in many ways, and it could be one of the last links in the chain – apart from the word processor and spreadsheet part, of course – creating a Google hosted-Office suite of some kind. One thing is for sure: many people seem to want them to do it. And the customer is always right.

Update:

Google also appears to be getting close to finally launching a Finance hub. And Google Page Creator has been having some teething problems.

A couple of days ago, Garrett Rogers of ZDNet posted an item about something interesting he found while poking around in the Javascript source code for Google’s Gmail: the word “domain.” Putting two and two together, he theorized that Gmail would soon be offering a hosted email solution for anyone with a domain of their own – such as a corporation, for example, or a university. In other words, Google would be your email administrator, but the email would look like it came from your domain.

Nice work, Garrett – because that’s exactly what Google has done. First there was a note on the Google blog about the company providing a hosted email service for San Jose City College – which was spotted by eagle-eyed Nick Carr of Rough Type, who posted a comment called “Google attacks Outlook.” In case you thought he was exaggerating just a tad, Google then put up its hosted service beta, which was spotted by the equally eagle-eyed Paul Kedrosky.

Not to be inflammatory, but I think this is huge. Yes, some companies will be concerned about letting an outside provider host their mail, just as there are people who don’t use Gmail because they don’t trust the company, or don’t want even robotic eyes looking through their messages – or because they are worried about the government forcing Google to deliver email to the authorities.

Despite all that, I think there will be plenty of companies – particularly small ones – as well as universities and other users who will be more than happy to get out from under the thumb of Microsoft Exchange/Outlook, although as my friend Rob Hyndman notes, the MSFT package still has a lot of things that Gmail doesn’t when it comes to being a PIM. Phil Sim of Squash, meanwhile, thinks that hosted Gmail is just one more tool to lock you in, and Zack Handley says that many companies would probably find that Gmail is more than enough.

See my update here.