You should be on the Extended Support Release 52.5.3 ESR https://www.mozilla.org/en-US/firefox/organizations/all/ Yes if have 2 Profiles and this is for Sync. As would update for each profile .....Am guessing.... This is all I have on Sync : *https://support.mozilla.org/en-US/kb/how-do-i-set-sync-my-computer *https://support.mozilla.org/en-US/products/firefox/sync *https://support.mozilla.org/en-US/kb/how-do-i-choose-what-types-information-sync-firefox *https://support.mozilla.org/en-US/kb/firefox-sync-troubleshooting-and-tips *https://support.mozilla.org/en-US/kb/change-primary-email-address-firefox-accounts Please let us know if this solved your issue or if need further assistance.

''howedy [[#question-1198497|said]]'' <blockquote> Can I have two different email addresses in my firefox mail. One for me and one for my wife </blockquote> What '''firefox mail'''? Firefox doesn't have an email client or service. Are you referring to a Firefox Account for Mozilla Services? https://support.mozilla.org/en-US/kb/access-mozilla-services-firefox-accounts