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inbox.dog is a service that provides Gmail OAuth credentials for AI agents, enabling full read, write, and search access to Gmail without requiring developers to undergo Google's CASA Tier 2 security audit. Built by a team focused on agent tooling, it solves the problem that most AI agents can only read Gmail but cannot send emails or manage labels due to restricted write scopes. The core capability is offering pre-verified OAuth tokens that skip the lengthy and costly audit process. It supports integration via a no-code web interface, an MCP server for agent frameworks like Claude and Cursor, and a JavaScript SDK for custom applications. The tool is ideal for developers building AI agents that need autonomous email capabilities, as well as non-technical users who want to connect Gmail to their agents quickly. It is free to use, open source, and handles token refresh automatically.
4.5/5
Reliable and comprehensive
Simple and developer-friendly
To provide AI agents with full Gmail access without the need for a security audit.
Works with MCP clients (Claude, Cursor, Windsurf), npm, and any HTTP-based agent.
Free to use with no paywall
Features with the highest value for users are highlighted here.
Full Gmail read, write, search, send
CASA Tier 2 security audit passed
MCP native server support
Auto-refresh tokens
No-code connection option
npm SDK for custom apps
Open source MIT licensed
Free to use with unlimited requests
Go to inbox.dog and generate a free API key to get your client ID and secret.
Pick no-code, MCP server, or npm SDK based on your technical comfort and use case.
Link your Gmail account via OAuth; inbox.dog handles the token exchange and refresh.
Your agent can now read, write, and search Gmail using the provided credentials or MCP tools.
AI Agent Developers
Startup Teams
Non-Technical Users
Open Source Contributors
Enterprise IT
Freelancers
Customer Support Teams
Product Managers
Hobbyists
MCP Client Users
Free
Want to add more pricing plans?
Claim this tool to manage plans, pricing, and listing details.
Weekly intelligence on AI strategy, operations, and market shifts. No noise. No narrative. Direct to your inbox.
ForthWrite drafts email replies that sound like you, learning from your real sent emails to match your tone and style. It integrates seamlessly with Gmail, Outlook, and your browser, saving you over an hour each day. ([forthwrite.ai](https://www.forthwrite.ai/?utm_source=openai))
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Rating
Pros
Cons
Side-by-side with top alternatives in this category.
| Tool | Rating | Visits / mo | Global rank | Category rank | Engagement | Bounce | Top market | Starts at | Free tier | Integrations | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|
 inbox.dogAI Email Writer | — | — | — | — | — | — | $0 | 2+ | View | ||
 InstantlyAI Email Writer | 2.5M | #16,223 | #22 | 8m 11s9.3 pages | US(31%)#10,482 | $0 | 1 | View | |||
 Read AIAI Email Writer | 4.0M | #11,453 | #174 | 2m 7s4.8 pages | US(31%)#6,868 | $0 | 2+ | View | |||
 AIMailmanAI Email Writer | 4.2M | #13,587 | #346 | 2m 2s3.2 pages | US(18%)#12,421 | $0 | 1 | View | |||
 AWeberAI Email Writer | 3.2M | #18,794 | #150 | 2m 8s2.6 pages | US(50%)#5,974 | $0 | 2+ | View |
Website traffic and keyword analysis.
Monthly visits
0
↓ -100.0% vs prior month
Avg. visit duration
00:00:00
M 4 2026 snapshot
Pages / visit
0.00
M 4 2026 snapshot
Bounce rate
0.00%
Lower is better
All traffic · Worldwide
Weekly estimate · Feb 1, 2026 – Apr 29, 2026
Peak week: 182.5 (Feb 1, 2026)Low week: 0 (Apr 1, 2026)Derived from monthly estimates · SimilarWeb-equivalent
0 releases published
No releases yet.
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ForthWrite drafts email replies that sound like you, learning from your real sent emails to match your tone and style. It integrates seamlessly with Gmail, Outlook, and your browser, saving you over an hour each day. ([forthwrite.ai](https://www.forthwrite.ai/?utm_source=openai))
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