B2Shift · Published 27 August 2026 · Updated 27 August 2026
A shared inbox is a good automation candidate because the categories repeat — but the most common mistake is skipping straight to auto-send before the classification is reliable enough to trust.
Classification is the foundation everything else depends on
Build the category taxonomy from real historical email, not from a guess at what categories should exist. Categories should map to an owner and an SLA, not just a label — a category nobody owns is a category that will quietly pile up.
Draft-first is the right default, not a compromise
For most categories, generate a draft reply and let a person review and send it, rather than sending automatically. This catches the cases where the classification was technically correct but the tone or specifics were wrong — a failure mode that's invisible in testing and common in production. Auto-send is appropriate only for narrow, low-risk categories with a strong track record.
Complaints and legal/compliance mail need a hard exception path
These categories should never enter the standard auto-draft flow. Route them immediately to a named person, with the full thread as context. The Gmail API's label and thread model (or the equivalent in Microsoft Graph for Outlook) makes this routing straightforward to implement correctly.
Attachments and phishing controls stay upstream
Triage automation should not become the phishing filter — that control belongs at the mail-security layer, before the automation ever sees the message. Automating classification on top of an already-filtered inbox is a materially safer design than trying to do both in one system.
Measure SLA adherence, not just volume handled
The useful metric isn't "emails processed" — it's response time against the SLA per category, and how often a draft required significant editing before sending. That second number tells you where the classification or draft quality actually needs work. See Workflow Automation & Integrations for the full architecture.