Email AI Agent Development
FISTA Solutions builds email AI agents for the shared inboxes that run operations: classifying and routing by intent, extracting structured data from message bodies and attachments, drafting replies from approved content, and escalating anything sensitive — with human approval before anything is sent externally.
- 150+
- projects delivered
- 50+
- companies served
- 99.9%
- verified uptime
- 47%
- efficiency gains
- 12+
- countries reached
What we build
What does a email AI agent do?
Email agents triage shared inboxes by intent and urgency, extract structured data from bodies and attachments into your systems, draft replies grounded in approved content, track threads awaiting response, and escalate legal, complaint, and safety topics to named people.
- 01
Triage and routing
Classifies by intent and urgency and routes to the right queue or owner with context attached.
Triage - 02
Data extraction
Pulls structured values from message bodies and attachments into systems, with provenance retained.
Extraction - 03
Reply drafting
Drafts replies grounded in approved content and thread history for human approval before sending.
Drafting - 04
Thread tracking
Tracks threads awaiting response and surfaces aging items before they become complaints.
Follow-up - 05
Sensitive escalation
Routes legal, complaint, and safety topics to named people immediately, never drafting a reply.
Escalation
Requirements
What guardrails does a email agent need?
Email agents read messages written by anyone and can send on your behalf, so guardrails cover sending authority, manipulation resistance, and privacy: approval before external sends, untrusted-content handling, and scoped access to the mailbox and systems.
| Guardrail | Why it matters | How FISTA implements it |
|---|---|---|
| Sending authority | An email sent in error cannot be recalled. | Approval required before external sending by default, with autonomous sending only for narrow, low-risk templates you approve. |
| Manipulation resistance | Email is the classic injection vector. | Content sanitization, instruction and data separation, tool allowlists, and monitoring for anomalous behavior. |
| Privacy scope | Mailboxes contain far more than the current task. | Scoped access per workflow, retention limits on processed content, and access logging on every retrieval. |
| Sensitive topics | Some messages must reach a person immediately. | Detection and immediate routing for legal, complaint, safety, and wellbeing topics, with no drafted reply. |
| Attachment safety | Attachments carry malware and hostile content. | Scanning before processing, type allowlists, and sandboxed extraction. |
Where AI fits
Where should a email agent start?
Start with triage and extraction on one shared operational inbox. Neither sends anything, both remove real handling time, and they establish the classification quality any drafting workflow depends on.
- 01
1. Triage one shared inbox
Classification and routing alone removes minutes per message with nothing sent.
- 02
2. Extract structured data
Values from bodies and attachments land in your systems with provenance, ending retyping.
- 03
3. Track aging threads
Surfacing unanswered threads prevents the complaints that follow silence.
- 04
4. Draft replies
Grounded drafts with human approval, measured on how often they are sent unedited.
- 05
5. Automate narrow sends
Only for low-risk templates you explicitly approve, with monitoring in place.
Cost and timeline
How much does a email agent cost, and how long does it take?
Cost is driven by intent variety and integration count; timeline by mailbox access approvals and content readiness. FISTA does not quote blind: the scoping call returns an agent design and a phased estimate.
Intent variety sets classification effort. A shared inbox with six intents is straightforward; one with forty overlapping intents needs a taxonomy exercise first, which is useful work regardless of automation.
Mailbox access approval is often the longest step. FISTA scopes access per workflow rather than requesting broad mailbox permissions, which usually shortens that review.
Send the scope you have, even if it is a paragraph. You get a written brief, an architecture sketch, and a phased estimate before any commitment.
Get a scoped quoteDelivery
How does FISTA deliver an AI agent into production?
FISTA delivers agents in four gated phases: a discovery sprint that picks the workflow and writes the agent specification, a design that names tools, permissions, and approval points, a build with an evaluation harness and shadow runs on real work, and a production release with traces, dashboards, and rollback.
- 1
Select and specify
Choose the workflow with a measurable outcome, map its systems and edge cases, and write the agent spec with success metrics.
OutputAgent specification, golden test set
- 2
Design the guardrails
Tool inventory with least-privilege scopes, approval gates, escalation paths, data handling, and the evaluation plan.
OutputTool and permission matrix
- 3
Build and shadow-run
Implement tools as MCP servers or connectors, iterate against the evaluation harness, and run in shadow mode on live inputs.
OutputShadow-mode results, eval scores
- 4
Release and observe
Graduated rollout, full traces, cost and quality dashboards, on-call runbook, and a change process that re-runs the evals.
OutputProduction agent with SLOs
Why FISTA
Why build your email agent with FISTA Solutions?
FISTA builds email agents that do not send without approval, treat every message as untrusted input, and escalate sensitive topics to people. Work is contracted through a US entity with full IP assignment.
Email Agents specifics
- External sending requires approval by default; autonomous sending is limited to templates you explicitly approve.
- Message and attachment content is treated as untrusted, with sanitization, allowlists, and anomaly monitoring.
- Access is scoped per workflow rather than granted across the whole mailbox, with logging on every retrieval.
- Legal, complaint, safety, and wellbeing topics route to named people immediately, with no drafted reply.
How FISTA engineers
- Spec-Driven Development: every deliverable starts as a written specification with acceptance criteria, so scope is testable before it is built.
- AI-native delivery: engineers direct coding agents under review gates and evaluation harnesses, compressing build time without loosening verification.
- Official Anthropic partner, with production experience across Claude, OpenAI, Google, and open-weight models, chosen per workload rather than by default.
- One accountable delivery lead, weekly demos on your environment, and code in your repositories from week one.
What you get as a client
- 150+ projects delivered for 50+ companies across 12+ countries since 2017, with 99.9% verified uptime on systems we operate.
- A US entity (FISTA Solutions Inc., Wilmington, Delaware) for contracting, invoicing, and IP assignment, with an engineering center in Faisalabad, Pakistan for cost-efficient senior capacity.
- US business-hours overlap for standups and reviews; written decision logs so nothing depends on a meeting you missed.
- Flexible engagement: fixed-scope build, embedded forward deployed engineers, or a dedicated team that you can scale month to month.
Clear answers
What teams ask before deploying agents.
Straightforward guidance for evaluating scope, fit, and the next step.
01Can an agent reply to emails automatically?
By default it drafts and a human approves. Autonomous sending is possible for narrow, low-risk templates you explicitly approve, with monitoring — but an email sent in error cannot be recalled, so the default is approval.
02How do you stop prompt injection through email?
Message and attachment content is treated as data rather than instructions, sanitized before processing, with tool allowlists and anomaly monitoring. Email is the most common injection vector, so this is built in rather than added later.
03Will it read our entire mailbox?
No. Access is scoped per workflow to the folders or labels the task requires, with retention limits on processed content and logging on every retrieval.
04What about attachments?
They are scanned before processing, restricted to allowlisted types, and extracted in a sandbox, because attachments are both a malware and a hostile-content vector.
05How long until it helps?
Triage and extraction on a single inbox typically go live within weeks once access is approved and the intent taxonomy is agreed.
Scoped in writing before you commit
Empty the shared inbox without sending something you regret.
Bring the inbox and its intents. The scoping call returns an agent design, an access plan, and a phased estimate.