Hi! I am a tax accountant. Considering updating from Thunderbird 97.0b3(64 bit) to latest non-beta version. Is this feasible? Is there a separate/special update process from Beta to the latest? Also would like to continue to use my POP account set-up at Optimum(Cablevision) here on Long Island. Email (Outbound)SMTP and (inbound)POP mail servers have to remain the same. So initially , I have to backup all my existing Thunderbird data & Profile. I have used Thunderbird for a long time; previously used Eudora. The problem which I am trying to prevent is that when I try to send a client their encrypted PDF of their tax returns and related instructions, etc. my document database or data magt system, namely File Cabinet Solutions show in the activity log "Waiting for user input" --- so no email is created which would have all the requisite documents attached. The last time helpful client send feature worked in my tax software, Ultratax, was June 27, 2025. Ultratax could not figure a solution, after several weeks & suggested that I upgrade my Thunderbird.. Can anyone help? Thank you! Best, Mike Porcari--- [edited phone# from public community support forum] (cell)