Inkbox
Inkbox provides an identity and communication layer for AI agents with email, phone, and messaging capabilities.
Recommended for
- Solo / Indie
- Idea-Stage
- Pre-Seed
- Seed
- Series A
SSIE
Stage Fit Recommendations
Following data shows why Inkbox is recommended for listed teams. The Fit Score represents the percentage fit of Inkbox to each company stages, as calculated by the SSIE.
Stage
Fit Score
Fit Reasons
Solo / Indie
$0–$2,000 MRR
82- CCPA / CPRA - baseline compliance certification
- Free plan available (Free), no purchase required to start
- Self-serve signup from $30/mo, no sales call required
Idea-Stage
$0
88- Gives AI agents an email inbox
- Provides agents with a public URL
Pre-Seed
$0–$10k MRR
95- Enables shared iMessage with phone calls
- Supports agent-to-agent communication
- Offers credential vault access
Seed
$10k–$100k MRR
90- Allows IMAP/SMTP mail-client access
- Supports custom email domains
Series A
$100k–$500k MRR
86- Dedicated support / CSM on the Enterprise plan
- Published uptime SLA and incident response commitments
- Provides dedicated VoIP phone numbers
- Offers dedicated iMessage infrastructure

Inkbox is an identity and communication layer for AI agents. It allows AI agents to have an email inbox, a public URL, and shared iMessage with phone calls. Each agent identity includes an agent-to-agent channel and access to contacts and a credential vault. The free plan supports up to 3 agent identities, while the developer plan offers 10 identities and additional features like dedicated phone numbers and custom email domains. The startup plan provides 100 agent identities with enhanced capabilities such as dedicated iMessage phone numbers and higher message limits. The enterprise plan offers custom pricing with additional features like international phone numbers and dedicated support.
Pricing
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