Feature spec
Goal: Send a clear invoice after finishing a job.
- Add a client, line items, a due date, and payment instructions.
- Preview the total before exporting a PDF.
- Keep an editable draft if export fails.
App Overview
Airmail for Business
Apple Design Award Winner
$49.99 · In-app purchases
PRICE
$49.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.1
38 ratings · Top 30%
Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.
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Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What's included15 files
A product spec, phased build plan, differentiation notes, and screen references.
- START_HERE
- AGENTS
- EVIDENCE
- SPEC
- BUILD_PLAN
- DIFFERENTIATION
- skills/
- screens/
Preview a sample Build Kit No email needed
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Screen plan
Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.
States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.
Differentiate and validate
Hypothesis: Contractors need faster repeat invoices more than more templates.
First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.
The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.
Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.
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Quick prompt
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for Airmail for Business: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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Opportunities
AI-GENERATED OPPORTUNITY HYPOTHESES
These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.
Hypothesis 1
Allow users to create custom folders and smart filters for emails.
Assumption to check: Limited customization options for email organization
Validate with people who use this workflow before building.
Hypothesis 2
Optimize the app for faster loading and smoother scrolling.
Assumption to check: Performance issues with large inboxes
Validate with people who use this workflow before building.
Hypothesis 3
Implement full-text search with filters for sender, date, and tags.
Assumption to check: Lack of advanced search features
Validate with people who use this workflow before building.
Hypothesis 4
Simplify the UI by using collapsible sections for different categories.
Assumption to check: User interface can feel cluttered
Validate with people who use this workflow before building.
App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
App Store description
Apple Design Award Winner Airmail for business is a full local client for iOS and have all the feature of Airmail Pro but does not use our backend servers for services like realtime mailbox monitoring, send later, and synchronized snooze, That are not present in this version. Any data is transmitted or stored on our servers even in anonymous form. All the app processing happen locally on user device tis is perfectly perfectly suitable also for large business or educational sectors as support MDM configuration. The app is available on Apple Business Purchase marketplace and educational discounts will apply, and support MDM Remote configuration by app config. Workflow customization is at the core, with a rich feature set like snooze, interactive push notifications, and full inbox sync. iCloud sync provides a fully ubiquitous experience so that all your accounts and app preferences are synced. - Support for Gmail, Exchange EWS, Outlook 365, IMAP and POP3 - Apple Watch app with glance and interactive notifications - Customizable swipes - Threads and single messages - Snooze messages - Bulk editing - iCloud sync between Mac and iOS - Drafts - Aliases - Multiple signatures - Unified inbox - Multiple Accounts ADVANCED - Spotlight search for documents and messages - Share composer extension - iCloud sync for labels, preferences and accounts across Mac and iOS - Handoff between Mac and iOS SEARCH AND FILTERS - Online search - Filter by Unread, Starred, Conversation, Today and Smart - Quick access to the messages of one sender - Quick per account single folder access LABELS AND FOLDERS - Full label access - Per single labels sync - Quick access to recent labels - Favorite labels - Full label creation and editing - Document view with rich preview - Unread, Today, Conversations and Contacts COMPOSER - HTML rich composer - Attachment resizing - Document import from Dropbox, Google Drive and much more - Signature swipes - Composer extension - Online drafts - Send and Archive OPERATIONS - Undo actions - Move messagees between accounts - Multiple signature - Operations view - Attachments view - Contacts view - Mark as unread on open CONTACTS - VIP - Google Directory Search - Exchange Global Address List - Contacts Group messages - Auto CC/BCC VISUAL - Profile icons - Highlight subject - Account colors - Preview message lines - Remote images INTEGRATIONS Attachments: - Google Drive - Droplr - OneDrive - Dropbox Open Links in: - Safari - Chrome - Firefox - iCab - Mercury - Safari in-app Send to Apps and Service: - Calendars Invites - Apple Calendar - Apple Reminder - Omnifocus - Todoist - Fantastical 2 - 2DO - Trello - Clear - Evernote - Things - Task - Editorial - Draft 4 - iA Writer - Code Hub - Things - 1Writer - Delivery - Github - Swipes - Pocket - DevonThink With the MDM server you will be able to configure most part of the app for deploy to your users: This include: - Managed Server Settings IMAP, POP3, Exchange - Managed account type - Managed account to some specified domains - Managed Integrations - Managed Attachments by File Type - Managed Forward Attachments by File Type - Managed Push Notifications - Managed Composer Extension - Managed Alias - Managed iCloud sync service - Managed Location Services - Managed Snooze - Managed Remote Images autoload - Managed Read Receipt - Managed Send Later - Managed Remind Me
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
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Build scope
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Define the first version
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Set boundaries
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Check the hard parts
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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BUILD KIT DIFFICULTY
Advanced
From the Build Kit assessment.
A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.
