Add extra features and styles to make SeaMonkey your own.
Check out our Mobile Add-ons site.
by Oside Guy on Sept. 5, 2018 ·
It would be nice if I could use it... but my T-Bird says it's Not Signed and thus not usable to me. V52.9.0 ESR.
by Patrick Brunschwig (Developer) on Sept. 6, 2018 ·
Thunderbird doesn't check signing. Are you sure you didn't accidentally install it in Firefox?
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