When I send a test (html) message to myself and read it in the Zoho email Android App, text appears with a tiny font, even though the email composer (Mailerlite) was set to font size 20. Around 11 words per line.

If I view the same email in the gmail app, it appears with 6 words per line (which is maybe a little big, but I was just trying to see if it made any difference).

Here are a couple of screenshots: https://photos.app.goo.gl/oKM5j2BqukxoLaW86

Have I missed a setting somewhere? Cheers. Charles