Put the content behind a link and share the link in the email. I agree that 102KB is very small these days, but with faster Internet connections it won't be long before people start sending really large files and think nothing of it.
We do have https://send.firefox.com and other easy services to securely send large files to others. Gone are the times when an ordinary email message could be well contained in plain old text (NO HTML), I gave up on doing just text emails some time ago, but still.... the transport for SMTP is textual after all, as too is HTML, but with emails sending you to a server, it would save the payload on email systems with all the copies being sent everywhere whilst some may never even get opened, ever! The bits are there, don't waste them 😉