This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Email messages become plain text even though I have HTML set up.

  • 3 replies
  • 6 have this problem
  • 8 views
  • Last reply by Zenos

more options

I always CC myself whenever I send email so I have the sent messages in my inbox as well. I noticed that my email messages, even though sent as HTML, shows up as plain text. It only becomes HTML if I reply to an email from someone else who sent by HTML. If I was replying to a plain text, I understand that mine becomes plain text as well, but how come a new message I send also becomes plain text? I checked over and over but I am set up as HTML.

Can anyone give me advice on how to fix this? What am I doing wrong?

I always CC myself whenever I send email so I have the sent messages in my inbox as well. I noticed that my email messages, even though sent as HTML, shows up as plain text. It only becomes HTML if I reply to an email from someone else who sent by HTML. If I was replying to a plain text, I understand that mine becomes plain text as well, but how come a new message I send also becomes plain text? I checked over and over but I am set up as HTML. Can anyone give me advice on how to fix this? What am I doing wrong?

All Replies (3)

more options
more options

Hi finitarry,

Thanks for the link. I've rechecked all the factors on the kb but I'm definitely all set for HTML.

The problem actually comes and goes; I don't quite have the statistics of possible causes of this yet.

more options

Do the affected messages have content that requires or demands HTML? I believe that by default, if a message doesn't require HTML, Thunderbird will opt to send it plain text.

This add-on:

http://nic-nac-project.org/~kaosmos/quoteandcomposemanager-en.html

offers a choice to force HTML when message content doesn't need it.

"10) option to send always mails in HTML format, when you compose with this format, also if the message have no element that requires HTML (by default Thunderbird in this case convert the message in plain text);"

PS. The owner of that site seems to be having his annual problem with the site's certificate having expired. Temporarily, you may need to force your browser to connect to http: rather https:

Modified by Zenos