not able to add email accounts
i had recently replaced my hard disk of 2011 imac now after the resart my imac is not accepting a lot of software and i cannot setup my email accounts... is there a solution to this
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A 2011 iMac will be limited to OS X 10.13.6 "High Sierra" and no later.
That Mac should now be considered very old. Recent software will not run on it, and most recent email services will require a later macOS version.
If its operating system is older than that, upgrade it to High Sierra: How to download and install macOS - Apple Support. It will still not support most recent software.