I’ve had my email address in a `mailto:` link in plaintext on my then-web-site, now-blog, since the early 2000s, and spam is no real problem. There are a few spam messages in my spam mailbox per day.

Perhaps my provider’s just great at filtering spam - but I kind of doubt it’s better than the major players (for years I’ve used Zoho for email - and it’s ‘okay’ enough that it’s not worth switching).