

In Thundbird, go to Click on the Menu Icon in the top right (three stacked horizontal lines) and then go to Options > Options Incorrect editing may cause Thunderbird to work incorrectly or not at all. See image below for an example of this.Ĭaution: this method requires the manual editing of Thunderbird's configuration. the signature in stored in a separate file and is either in HTML format or contains an image, Mozilla Thunderbird will automatically insert a two dash '-' signature separator within a new message. If you use a custom signature in HTML format - i.e. This article explains how to remove the '-' signature separator that is automatically inserted by Mozilla Thunderbird when using custom HTML signatures.
