Siggly + Thunderbird
HTML File Signatures
Thunderbird can load signatures from an external HTML file. Siggly generates a ready-to-use .html file you simply point Thunderbird to in Account Settings.
Inline HTML Editing
Prefer pasting HTML directly? Siggly provides clean, validated HTML you can paste into Thunderbird's built-in signature editor.
Profile Folder Guidance
Siggly documents exactly where Thunderbird stores signature references in your profile folder, making troubleshooting straightforward.
Setting Up a Signature in Thunderbird
Design in Siggly
Use the visual editor to create your signature and export it as an HTML file optimized for Thunderbird rendering.
Save the HTML File
Download the .html file and save it to a permanent location on your computer — this is the file Thunderbird will reference.
Configure Thunderbird
Open Account Settings, check "Use HTML" and "Attach the signature from a file", then browse to the saved HTML file.
Common Thunderbird Signature Scenarios
Multi-Account Signatures
Thunderbird supports different signatures per email account. Use Siggly to generate a unique HTML file for each identity.
Linux Desktop Teams
Thunderbird is the default mail client on many Linux distributions. Siggly ensures signatures render consistently across GTK and Qt environments.
Shared Workstations
Store signature HTML files on a network share so every user on a shared workstation references the same up-to-date signatures.
Extension-Based Management
Combine Siggly-generated HTML with Thunderbird extensions like Signature Switch for advanced per-recipient or per-account signature rules.