Mozella listed email support-seamonkey@lists.mozilla.org, Failed so here it is: OK! I've been using Mozella from your inception over 29 years. Now you and others are forcing me to convert to Firefox and Thunderbird. Thunderbird is only 50% as good as the SeaMonkey Browser and Email, but usable if I can "cut and past addresses" from in SeaMonkey browser. I have prepared all the Exports and inports from SeaMonkey. I have installed Firefox and filled in all of its Profile, Account, settings and Email Communications. Firefox gives me NO usable instructions for importing and of the referenced exports!!!! What little Firefox found in Thunderbird are NOT anywhere near COMPLETE!! Several needed items disappeared! At least SeaMonkey publishes DETAILED instructions for preparing both the Export and Import items. Firefox has no listing "PREFERENCES" section! Thunderbird has no Composer or Advance sections and details. Under Firefox/Applications/mailto Indicates: "SeaMonkey (Default). Does this mean I must have SeaMonkey installed as well or can I change that to Thunderbird? Firefox HELP is no help at all NOTE: I have been using SeaMonkey by all 5 or 6 names for personal use and 23 years for my Police Department work. NOTE: I have tried to reach Mozella several times by USPS to the address listed in SeaMonkey and addresses in your local Phone Book. All were returned Marked as wrong address and phone as no longer in service. I would greatly appreciate you sending me detailed directions to finally get things working so I can get both computers running properly and upgraded to Windows 10. Respectfully; Vern H. Goding Loyal and Faithful User [removed address from public view as this is a support forum]