Mae rhai hysbysebion ebost yn HTML ac yn cynnwys cyfeiriadau i, er enghraifft, delweddau a ddefnyddir gan yr hysbysebwyr i gadarnhau eich bod chi wedi darllen eu negese (quot; llau gwêquot;). Does dim rheswm dilys i lanlwytho delweddau o' r Ryngrwyd fel hyn, oherwydd gall yr anfonwr o hyd atodi' r delweddau gofynnol yn uniongyrchol i' r neges. I amddiffyn yn erbyn cam- ddefnydd felly o' r nodwedd dangos HTML KMail, analluogir y dewisiad yma gan ragosod. Er hynny, os hoffech, er enghraifft, weld delweddau mewn neges HTML nad oedd wedi' u atodi iddi, gallwch alluogi' r dewisiad yma, ond dylech chi fod yn ymwybodol o' r problem posibl.
Some mail advertisements are in HTML and contain references to, for example, images that the advertisers employ to find out that you have read their message ("web bugs"). There is no valid reason to load images off the Internet like this, since the sender can always attach the required images directly to the message. To guard from such a misuse of the HTML displaying feature of KMail, this option is disabled by default. However, if you wish to, for example, view images in HTML messages that were not attached to it, you can enable this option, but you should be aware of the possible problem.