I ran across this article on PCMech, I thought it was quite interesting as it's a common problem that we run into all the time...

You can read the article at http://www.pcmech.com/article/keeping-email-synced-on-multiple-computers/

It mentions all the basic ways that this issue can be resolved and includes one method that is unique (yet, too much administrative effort for my taste), suggested by Jeremy Johnstone however, what struck me is that they failed to mention the simplest way to resolve this issue!

First move your Outlook.pst file from the default location (C:\Users\USERNAME\AppData\Local\Microsoft\Outlook) to a network shared folder on your main computer or server if you have one available.

Now your emails are accessible through any computer on your network, just open Outlook and go to Tools > Account Settings and click on the Data Files tab, click Add... Click OK to select the default file type and open the Outlook.pst file from your network shared folder, make it your default data file by clicking Set as Default and optionally remove the old one if it exists. Now go to the E-mail tab, click on your account and click the Change Folder button on the bottom left, make sure the Inbox folder of your new data file is selected, click OK, click Close to close the Account Settings window and your ready to go! Repeat these steps once on every machine you want to access your emails from and thats it!

You can also use a freeware utility called SyncBack created by 2BrightSparks that works great and you can set a schedule to sync the .pst file on your laptop and vice versa so you can work on the go and always keep all your emails in sync. There's really so much more you can do if you just use your imagination! That's the way we've been doing it for years and it works out well for us...