The phrase "available from within" is correct and usable in written English.
It can be used to indicate that something can be accessed or obtained internally, such as within a system, organization, or location.
Example: "The resources you need for the project are available from within the company’s intranet."
Alternatives: "accessible internally" or "obtainable from inside".
Data Sync: SQL Data Sync Services are now available from within the new Windows Azure Management Portal.
Between writing the grant and getting the award, a piece of equipment became available from within the department that precisely met our needs.
An individual always operates within specific horizons, but because horizons open out to indeterminacy, a range of interpretative meaning is available from within those horizons (2006, 43).
Previously, it only had its Vine app for 6-second videos, but the new video feature will have fewer restrictions and be available from within the main Twitter app.
Because designers are working collaboratively at companies like Airbnb, Spotify and Twitter, Studio will offer shared design systems where assets, hex codes, and other components of design are available from within the tool.
To deploy the resulting models, we extended the Bioclipse decision support framework to support models from LIBLINEAR and made our models of logD and solubility available from within Bioclipse.
(The one above is available from Design Within Reach).
Some companies and colleges already have wireless local area networks using the same technology so Internet and intranet access is available from anywhere within an office or around a campus.
Search is available from anywhere within the app, which also makes it more likely people will use it.
All the new Gmail messages are available from straight within the notifications tab, which keeps users from having to switch back and forth between apps.
That's right: with a nifty little Chrome extension, Giphy will now be available from directly within the Compose window of your Gmail.
