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

font size changes randomly

more options

The font size of the emails sent out changes randomly , even though I have not changed any setting. In fact i did an experiment - 2 emails were sent out one after another to myself. When received, the first email has a much smaller font size than the 2nd. All these, without any settings changed.

Someone pls help! I have been accused harshly of write RUDE emails due to this prob. The worse is, the font size changes at RANDOM! I cant do anything about it! ARHG! If there is no solution, then i would have to stop using Thunderbird, or there will be folks who will accuse of my being rude AGAIN and I wont even know which email sent out will be a small, or BIG font.

HELP ME!

The font size of the emails sent out changes randomly , even though I have not changed any setting. In fact i did an experiment - 2 emails were sent out one after another to myself. When received, the first email has a much smaller font size than the 2nd. All these, without any settings changed. Someone pls help! I have been accused harshly of write RUDE emails due to this prob. The worse is, the font size changes at RANDOM! I cant do anything about it! ARHG! If there is no solution, then i would have to stop using Thunderbird, or there will be folks who will accuse of my being rude AGAIN and I wont even know which email sent out will be a small, or BIG font. HELP ME!

All Replies (3)

more options

In your position I would be looking carefully at the HTML code of the two emails you sent to yourself. (View Source will reveal it.) See if there are font definitions, font size or styling tags that differ between the two messages. Once you have identified what is causing them to appear differently you can address the cause. Also I would advise closing and restarting Thunderbird with add-ons disabled and repeating the experiment, in case an add-on is the trouble.

more options

Im code illiterate unforunately

Here are the codes

!st email:

x-store-info: Ru8Mzrcu9Bi87krfImffoGU6zyI7zQxEX0BuL8ZH8bGeW4+sTAXtk75KBNMzrywMGLDM2u+BSScXHP/bRwoNJ7SscHUtRO9iBVVm/NRhO5VCOHe6NIjSI8itII1jeWYFrfmKVbuGppOr5wLwNmKa3A== Authentication-Results: hotmail.com; spf=pass (sender IP is 65.55.116.43; identity alignment result is pass and alignment mode is relaxed) smtp.mailfrom=jeniva.yeo@hotmail.com; dkim=none (identity alignment result is pass and alignment mode is relaxed) header.d=hotmail.com; x-hmca=pass header.id=jeniva.yeo@hotmail.com X-SID-PRA: jeniva.yeo@hotmail.com X-AUTH-Result: PASS X-SID-Result: PASS X-Message-Status: n:n X-Message-Delivery: Vj0xLjE7dXM9MTtsPTE7YT0wO0Q9MDtHRD0wO1NDTD0w X-Message-Info: AuEzbeVr9u6HQKaFYM906NxwDv8EUrWGfwry/47sT6fJKamxRlmRSrVcJrhI8WnxQgnIK4efTPls3kHusg9nDs+t2zhn/1eer2G9RqhFjfBXp/nizPLuLeqvSjzjUlv1FmoEqJ2oKT3zcgmOE8nIQXGZGsq1OLhyT/znyybB0PyTjq/9kvj11TWMXhPEGlukZl4lZEKzitE7f/hHk8tLEQH6GkCd6KwYCrIjk3ifKojWZftGn64V4A== Received: from BLU004-OMC1S32.hotmail.com ([65.55.116.43]) by COL004-MC5F18.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.23143); Wed, 13 Apr 2016 22:08:48 -0700 Received: from BLU436-SMTP40 ([65.55.116.8]) by BLU004-OMC1S32.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.23008); Wed, 13 Apr 2016 22:08:41 -0700 X-TMN: [plDXeOgh3acNWKZFoFAPFcuoyVBEBw3N] X-Originating-Email: [jeniva.yeo@hotmail.com] Message-ID: <BLU436-SMTP409FAA2E5FA5E08B51F6638D970@phx.gbl> Return-Path: jeniva.yeo@hotmail.com To: jeniva.yeo@hotmail.com From: Jeniva Yeo <jeniva.yeo@hotmail.com> Date: Thu, 14 Apr 2016 13:08:35 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101

Thunderbird/38.7.2

MIME-Version: 1.0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 14 Apr 2016 05:08:40.0107 (UTC) FILETIME=[B54E4FB0:01D1960B]

<meta http-equiv="content-type" content="text/html; charset=utf-8"> <font size="+2"><font face="Arial">test</font></font>

-- 
Warm regards
Jeniva Yeo


2nd Email :

x-store-info: Ru8Mzrcu9Bi87krfImffoGU6zyI7zQxEX0BuL8ZH8bE2GaBRHV8Y1mFF1e00lpaMMpijQhWrQ2Kw2a5/SEgvBhsWE9G6FkF8U6gwrY7+QRoi+yAODecib0Na6IDQhXpRtpaMWOdwHcXPvKae8V2iXg== Authentication-Results: hotmail.com; spf=pass (sender IP is 65.55.116.28; identity alignment result is pass and alignment mode is relaxed) smtp.mailfrom=jeniva.yeo@hotmail.com; dkim=none (identity alignment result is pass and alignment mode is relaxed) header.d=hotmail.com; x-hmca=pass header.id=jeniva.yeo@hotmail.com X-SID-PRA: jeniva.yeo@hotmail.com X-AUTH-Result: PASS X-SID-Result: PASS X-Message-Status: n:n X-Message-Delivery: Vj0xLjE7dXM9MTtsPTE7YT0wO0Q9MDtHRD0wO1NDTD0w X-Message-Info: AuEzbeVr9u6HQKaFYM906EYSN7oPsRu9r67svucJCVJ5VAD24UkP4qSIghJ4uPYSBRmwqm0W6nXOY8MgNNpeozN/aASJBKl27FX5JSAgRGGMwpKVsSyr8CyHXuJ0g8tnjCZj87Il9i2cA0jK2EGAHBn1w+hitYtELuL0/dEkbJIbRE+tr86cKYNGIF2eR6mTzOrUKtameucITaNahsAsztZ0s1AyT0wX6H090oc182nFGOh5qS5ZFQ== Received: from BLU004-OMC1S17.hotmail.com ([65.55.116.28]) by COL004-MC4F32.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.23143); Wed, 13 Apr 2016 22:07:34 -0700 Received: from BLU436-SMTP248 ([65.55.116.7]) by BLU004-OMC1S17.hotmail.com over TLS secured channel with Microsoft SMTPSVC(7.5.7601.23008); Wed, 13 Apr 2016 22:07:25 -0700 X-TMN: [ZmS7iM1X+BSHUE1FAGJC8U8J99fisTbR] X-Originating-Email: [jeniva.yeo@hotmail.com] Message-ID: <BLU436-SMTP2480E9E59808CD161E972248D970@phx.gbl> Return-Path: jeniva.yeo@hotmail.com To: jeniva.yeo@hotmail.com From: Jeniva Yeo <jeniva.yeo@hotmail.com> Date: Thu, 14 Apr 2016 13:07:19 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:38.0) Gecko/20100101

Thunderbird/38.7.2

MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 14 Apr 2016 05:07:24.0898 (UTC) FILETIME=[887A5420:01D1960B]

test

-- Warm regards Jeniva Yeo

more options

Well the first one appears to have been composed and sent as html and the second one as plain text. I'd suggest: 1) in Account Settings > Composition & Addressing, make sure that 'compose messages in HTML format' at the top is ticked. 2) in Preferences > Composition > General, make sure that the font size for HTML is set to 'medium' 3) in that same control, click on 'send options' to 'configure text format behaviour' and make sure that 'send in HTML anyway' is selected 4) close and restart Thunderbird to make sure that those changes have taken effect and then 5) when composing an email, click on Options and check that Delivery Format is set to HTML With those steps in place, repeat the experiment: is the appearance of the messages when you receive them now consistent? Please note that those steps are to ensure that HTML is used when you compose messages. You also need to be thinking about how the messages display when opened. You control that also in Thunderbird Preferences, on the Display > Formatting tab. Personally I have the default font for HTML set to sans serif size 14 and plain text set to regular font and regular size.