HubSpot CRM vs Zendesk

What there are several functions that require some training (tutorials) is not annoying, just that it takes a little time

Their email creation tool is great, however, it can't import custom fonts to help keep messages aligned with branding.

The navigation within the internal system can initially be a bit difficult (i.e. the naming of the tabs are not always clear), but once you know where to click, it's not too bad.

Background workflow good but still not as flexible as others, Salesforce service cloud for example.