MailKite vs openagent.email
55 fields both were evaluated on, 25 of them different — including where one discloses something the other does not. Every value links to the document it came from. 30 further fields are disclosed by neither and are listed at the end rather than tabled.
Assurance
| Field | MailKite | openagent.email |
|---|---|---|
| Explainability· | no public information mailkite.dev · checked Aug 1, 2026 | “Every message comes back with codes and action links already extracted — and the raw text and HTML right there when extraction isn't enough.”openagent.email · checked Aug 2, 2026 |
| Runtime governance· | no public information mailkite.dev · checked Aug 1, 2026 | “Per-identity send rate limits (20/hour default) and automatic retention (30 days default).”openagent.email · checked Aug 2, 2026 |
| Permission scopes· | no public information mailkite.dev · checked Aug 1, 2026 | “Every identity gets its own oa_… token that can only read and send as that address. Your admin key never touches an agent.”openagent.email · checked Aug 2, 2026 |
| Compliance certifications· | “Compliant by design GDPR Compliant PCI Compliant CCPA Compliant”mailkite.dev · checked Aug 1, 2026 | no public information openagent.email · checked Aug 2, 2026 |
| Regulatory alignment· | “Compliant by design GDPR Compliant PCI Compliant CCPA Compliant”mailkite.dev · checked Aug 1, 2026 | no public information openagent.email · checked Aug 2, 2026 |
| Outcome-based pricing· | no public information mailkite.dev · checked Aug 1, 2026 | no paid tier, no usage limits, no per-inbox pricing “openagent.email is open source under the Apache-2.0 license — no paid tier, no usage limits, no per-inbox pricing.”openagent.email · checked Aug 2, 2026 Not in our latest capture. We captured this page again on Sep 17, 2026 and this quote was not there. How we re-check citations |
Agency
| Field | MailKite | openagent.email |
|---|---|---|
| Action space· | “Send, receive, and auto-reply across unlimited domains, free .”mailkite.dev · checked Aug 1, 2026 Not in our latest capture. We captured this page again on Sep 10, 2026 and this quote was not there. How we re-check citations | read and send “Every identity gets its own oa_… token that can only read and send as that address.”openagent.email · checked Aug 2, 2026 |
| Operating environment· | “Email for developers and their teams . Agents and humans, one platform.”mailkite.dev · checked Aug 1, 2026 Not in our latest capture. We captured this page again on Sep 10, 2026 and this quote was not there. How we re-check citations | no public information openagent.email · checked Aug 2, 2026 |
| Initiative· | “Turn on auto-reply and it triages, answers, filters spam, tags, and escalates on its own.”mailkite.dev · checked Aug 1, 2026 | “The agent waits on the inbox; the signup mail arrives; the OTP comes back parsed and ready to type.”openagent.email · checked Aug 2, 2026 |
Safety
| Field | MailKite | openagent.email |
|---|---|---|
| Usage restrictions· | no public information mailkite.dev · checked Aug 1, 2026 | “Per-identity send rate limits (20/hour default) and automatic retention (30 days default). A leaked token can't become a spam cannon.”openagent.email · checked Aug 2, 2026 Not in our latest capture. We captured this page again on Sep 17, 2026 and this quote was not there. How we re-check citations |
| Data handling· | “Compliant by design GDPR Compliant PCI Compliant CCPA Compliant”mailkite.dev · checked Aug 1, 2026 | Message bodies are never stored; automatic 30-day retention by default. “Message bodies are never stored.”openagent.email · checked Aug 20, 2026 |
Practicality
| Field | MailKite | openagent.email |
|---|---|---|
| Pricing model· | no paid tier, no usage limits, no per-inbox pricing “openagent.email is open source under the Apache-2.0 license — no paid tier, no usage limits, no per-inbox pricing.”openagent.email · checked Aug 2, 2026 Not in our latest capture. We captured this page again on Sep 17, 2026 and this quote was not there. How we re-check citations | |
| Price point· | “Beta 50% off your first year — founding rate for the first 1,000 customers.”mailkite.dev · checked Aug 1, 2026 | $5/mo VPS “The only thing you pay for is the server you run it on, and a $5/mo VPS is enough.”openagent.email · checked Aug 2, 2026 |
| Availability· | “Beta 50% off your first year — founding rate for the first 1,000 customers.”mailkite.dev · checked Aug 1, 2026 | open source “openagent.email is open source under the Apache-2.0 license”openagent.email · checked Aug 2, 2026 Not in our latest capture. We captured this page again on Sep 17, 2026 and this quote was not there. How we re-check citations |
| Deployment options· | no public information mailkite.dev · checked Aug 1, 2026 | |
| Integrations· | no public information mailkite.dev · checked Aug 1, 2026 | “WORKS WITH ANY MCP CLIENT — AND ANYTHING THAT CAN CURL Claude Code Cursor Windsurf Docker ✦ Kimi Code ✦ Any MCP client ✦ Plain REST”openagent.email · checked Aug 2, 2026 |
Ecosystem
| Field | MailKite | openagent.email |
|---|---|---|
| Protocols supported· | “MCP, an AI skill, or REST”mailkite.dev · checked Aug 1, 2026 Not in our latest capture. We captured this page again on Sep 10, 2026 and this quote was not there. How we re-check citations | |
| Tool use· | “Same tools your agent gets over MCP, an AI skill, or REST.”mailkite.dev · checked Aug 1, 2026 Not in our latest capture. We captured this page again on Sep 10, 2026 and this quote was not there. How we re-check citations | “MCP tools mail_new_identity mail_list_identities mail_list_messages mail_read_message mail_wait_for mail_send mail_mark_seen”openagent.email · checked Aug 2, 2026 |
| Multi-agent· | no public information mailkite.dev · checked Aug 1, 2026 | Yes — supports agent-to-agent task threads (email-backed) with an A2A-vocabulary Agent Card “Agent-to-agent tasks Email-backed task threads with server-stamped states”openagent.email · checked Aug 13, 2026 |
| API access· | no public information mailkite.dev · checked Aug 1, 2026 | “REST API POST /v1/identities — mint an address + scoped token GET /v1/identities — list every identity you own POST /v1/identities/:a/token — rotate (revoke) a token DELETE /v1/identities/:a — retire an identity GET /v1/messages — list an inbox GET /v1/messages/:id — full mail + parsed OTP POST /v1/messages/wait — long-poll for new mail POST /v1/messages/:id/seen — mark read / unread POST /v1/send — send as any identity you own”openagent.email · checked Aug 2, 2026 Not in our latest capture. We captured this page again on Sep 17, 2026 and this quote was not there. How we re-check citations |
| Open source· | no public information mailkite.dev · checked Aug 1, 2026 | “open source under the Apache-2.0 license”openagent.email · checked Aug 2, 2026 Not in our latest capture. We captured this page again on Sep 17, 2026 and this quote was not there. How we re-check citations |
| Marketplace presence· | “Works in Claude Code, Cursor, Codex, Amp, and any agent that reads Agent Skills.”mailkite.dev · checked Aug 1, 2026 | no public information openagent.email · checked Aug 2, 2026 |
Impact
| Field | MailKite | openagent.email |
|---|---|---|
| User base· | “Beta 50% off your first year — founding rate for the first 1,000 customers.”mailkite.dev · checked Aug 1, 2026 | no public information openagent.email · checked Aug 2, 2026 |
| Deployment scale· | “Beta 50% off your first year — founding rate for the first 1,000 customers.”mailkite.dev · checked Aug 1, 2026 | open source under the Apache-2.0 license — no paid tier, no usage limits, no per-inbox pricing. “openagent.email is open source under the Apache-2.0 license — no paid tier, no usage limits, no per-inbox pricing.”openagent.email · checked Aug 2, 2026 Not in our latest capture. We captured this page again on Sep 17, 2026 and this quote was not there. How we re-check citations |
| Target sectors· | “Email for developers and their teams .”mailkite.dev · checked Aug 1, 2026 Not in our latest capture. We captured this page again on Sep 10, 2026 and this quote was not there. How we re-check citations | no public information openagent.email · checked Aug 2, 2026 |
Disclosed by neither
Both MailKite and openagent.email publish nothing on these 30 fields. That is a finding about the category rather than a difference between them, so it is recorded here instead of as 30 identical table rows. Each is shown with its source check on the individual profiles.
- Autonomy level
- Human oversight
- Goal complexity
- High-risk domains
- Documented incidents
- Supported regions
- Support model
- Base models
- Model provider
- Model swappable
- Open weights
- Fine-tuning
- Context window
- Safety evaluations
- Red teaming
- Safety policy
- Model or system card
- Incident reporting
- Third-party evaluations
- Insurance available
- Insurance carriers
- Coverage limits
- Indemnification
- Liability cap
- Audit trail
- Tamper-evident log
- Settlement mechanism
- Dispute process
- SLA terms
- Evaluation coverage
Questions
- How do MailKite and openagent.email compare on deployment options?
- MailKite: no public information disclosed. openagent.email: Self-hosted.
- How do MailKite and openagent.email compare on multi-agent?
- MailKite: no public information disclosed. openagent.email: Yes — supports agent-to-agent task threads (email-backed) with an A2A-vocabulary Agent Card.
- How do MailKite and openagent.email compare on outcome-based pricing?
- MailKite: no public information disclosed. openagent.email: no paid tier, no usage limits, no per-inbox pricing.