Most email apps let you put links within your message that appear as clickable text that you write, as opposed to simply pasting in a long, ugly URL.
Email and Messaging
Apple has added a font manager to iOS 13 (and iPadOS) that allows you to download and manage fonts from third-party apps. Installed fonts will typically work on apps like Pages, but not in Messages or Notes and a few others, and they may not work on other third-party apps like Google Docs, etc. You also are limited to using fonts found in apps that can be downloaded from the App Store, so you won't just be able to download fonts from websites and install them.
If you want to install new fonts, here's how to do it on iPhone:
There are plenty of reasons why you might want to schedule an email to send at a later time - perhaps it is something you don't want to forget but it is too soon to send immediately, maybe you are emailing somebody in a different time zone and you want them to be awake when they receive it, or maybe you are negotiating with unsavory characters and have a scheduled email of incriminating evidence as insurance.