HTML email with server links created in webflow

My code guru tells me that emailing an HTML page to a email list requires links pointing to a server for images, CSS, etc. This makes sense.

However, he says HTML email is SO different and SO fraught with problems, that I should create and work with MailChimp [or equivalent]. He says it would be much easier.

My client works with outside services that – I’m sure – change all the link addresses to point to their own servers. I think: “leave well enough alone. You aren’t an email blast service.”

However, I’d like to ship an HTML code zip package that I’ve tested on my own server. Is there a Webflow shortcut for this? Is there a third party Webflow app for this? Any other thoughts out there?