Every major desktop browser has sharing functions built into it. For example, in Firefox, you can add an 'Email Link' option to the UI next to your taskbar that looks like an envelope, and go from there. Some browsers don't have this functionality exposed in the OOBE and you need to add it to the UI, but a good chunk of them have it by default.

Both iOS and Android also feature extensive sharing functionality in their major browsers, and these go far beyond just email with apps that integrate the sharing API into them, e.g. I can share a URL directly to a contact on Element, bypassing email entirely, but likewise, on the same menu I can choose to email it to someone.