Outlook Add-in
Attachment
Outlook add-in project for email, calendar, attachments, CRM, or Microsoft 365 workflow automation.
Outcome: Cleaner Outlook workflow with fewer manual email steps
- Outlook
- Office.js
- Microsoft Graph
- React
Screenshots
Overview
Attachment is a shipped outlook add-in engagement: Outlook add-in project for email, calendar, attachments, CRM, or Microsoft 365 workflow automation.
This case study covers a custom Outlook add-in built with Office.js and Microsoft Graph so users can work inside email and calendar without switching apps.
The solution focuses on reliable read/compose scenarios, attachment handling, and optional CRM or line-of-business integrations behind enterprise authentication.
Results
- Cleaner Outlook workflow with fewer manual email steps
- Fewer manual steps per email
- Consistent data capture in CRM or DMS
- Compatible with Microsoft 365 centralized deployment
The challenge
Fragmented email workflows
Teams were copying data between Outlook, file shares, and internal tools — increasing errors and slowing response times.
Security & tenant constraints
The add-in needed Graph scopes, SSO, and deployment paths that satisfy Microsoft 365 admin and InfoSec review.
Our approach
In-mail task pane experience
A focused task pane guides users through the workflow with validation, status feedback, and clear error handling.
Graph-backed automation
Where needed, Microsoft Graph syncs metadata, attachments, and calendar context while respecting least-privilege permissions.
Deliverables included
Typical scope for a outlook add-in engagement at this complexity level — adjusted per statement of work.
- Manifest, icons, and store-ready packaging
- Task pane UI (React + TypeScript)
- Graph integration & auth configuration guide
- QA across Outlook desktop and web
- Admin deployment documentation
Explore related services
Outlook add-in development
About Attachment
- What was built for Attachment?
- Outlook add-in project for email, calendar, attachments, CRM, or Microsoft 365 workflow automation. Outcome for users: Cleaner Outlook workflow with fewer manual email steps. Stack: Outlook, Office.js, Microsoft Graph, React.
- Does this work in Outlook on the web?
- Yes. We test Outlook desktop (Windows/Mac) and Outlook on the web so the same manifest behaves consistently across channels.
- Can we extend this add-in later?
- Absolutely. We structure Office.js projects with typed APIs and documented modules so your team or ours can add features in phases.
Want an add-in like this?
Share your workflow — we'll scope Office.js architecture, timeline, and fixed pricing.
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