Testing emails for spam...

Testing emails for spam...

I found a great, free service for testing the 'spaminess' of my emails sent from Zoho.

www.mail-tester.com

If you use Zoho Campaigns, I thoroughly recommend it.

Anyway, it highlights a problem with Zoho emails:-

-1.105 MIME_HTML_ONLY Message only has text/html MIME parts
You should also include a text version of your message (text/plain)

Obviously, I know that Zoho can both HTML and Text emails, but does this error mean that Zoho needs to do something different to satisfy SpamAssassin's score of the email?