I need a dependable, privacy-minded email solution—something on par with Zoho Mail or Proton—for day-to-day business communication. The account must run on my own domain, support a shared team inbox, and let us queue messages with scheduling and reminder functions so nothing slips through the cracks. Strong security is non-negotiable: end-to-end or at least in-transit email encryption must be in place, backed up by solid spam filtering that keeps junk and threats away without losing legitimate mail. If you can recommend a suited platform, handle the full deployment, and make sure the domain records, mailbox permissions, and user roles are all wired up correctly, we’re good to go. I’ll also need a quick walkthrough or concise doc so the team understands how to use the shared inbox and schedule messages. Acceptance criteria: • Custom-domain addresses send/receive flawlessly • Shared inbox active and visible to designated users • Message scheduling and reminder features tested live • Encryption and spam filter verified with sample messages • Simple hand-over guide delivered in PDF or Markdown