Plain
B2B teams' AI-powered support infrastructure for scalable customer success
Recommended for
- Pre-Seed
- Seed
- Series A
- Scaleup
- Late-Stage
- Public / Enterprise

Plain is a marketing-and-sales solution that empowers B2B teams with a flexible AI support stack. This no-code or all-code infrastructure enables businesses to build and customize their support motion as they grow. With Plain, teams can orchestrate agents, provide support from anywhere, and gain valuable insights to inform their strategy. By leveraging Plain's automation capabilities, hundreds of fast-moving teams have already improved their customer support experience.
SSIE
Stage Fit Recommendations
Following data shows why Plain is recommended for listed teams. The Fit Score represents the percentage fit of Plain to each company stages, as calculated by the SSIE.
Stage
Fit Score
Fit Reasons
Pre-Seed
$0–$10k MRR
59- Documented REST API for integration
- Pre-built third-party integrations
- Multiple support channels (chat, email)
- Entry pricing sized for this stage
- Data encryption at rest and in transit
- GDPR - baseline compliance certification
- Documented data deletion procedures
- Data export and migration tooling
Seed
$10k–$100k MRR
65- SOC 2 - core enterprise certification
- Single sign-on (SSO) via SAML 2.0
- Published uptime SLA with availability guarantees
- Public trust center for security posture
- SCIM-based automated user provisioning
Series A
$100k–$500k MRR
66- DoD IL4/IL5 - gov-grade certification
Scaleup
$500k–$2M+ MRR
66- SOC 2 - core enterprise certification
Late-Stage
$2M+ MRR
66- SOC 2 - core enterprise certification
Public / Enterprise
$100M+ ARR
65- DoD IL4/IL5 - gov-grade certification
Pricing
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