SMTP2GO
SMTP2GO scores 64/100 on xpay's Agent-Ready Index v2: partial pricing visibility; self-serve checkout is available; API access is partial; usage-based / per-token pricing is published; a free entry path exists.
SMTP2GO pricing
Free
Free
Starter
$10/mo
flatProfessional
$75/mo
flatPremier
$75/mo
flatHow SMTP2GO scores on the agent-ready dimensions
Public pricing visibility
15 / 15
Self-serve checkout
15 / 15
Public API + docs
2 / 20
Usage-based / metered pricing
13 / 20
Free entry path
7 / 7
No sales call required
7 / 7
Card / wallet / x402 payment
5 / 6
Machine-readable bonus (MCP / OpenAPI)
0 / 10
Total
64 / 100
What it actually costs at typical scale
Free plan, 500 emails/month
$0/mo
Starter plan, 10,000 emails/month
$10/mo
Can an autonomous agent transact here?
Can create account
Can enter payment method
Can upgrade plan
Can buy more usage
Can cancel online
Payment methods
Human approval recommended
Pricing transparency
full
Purchase motion
self_serve
Demo required
Quote required
Annual commit required
Auto-renewal mentioned
Cancellation policy visible
Refund policy visible
Minimum commit
$100
Minimum term
12 months
Invoice payment available
Purchase orders supported
Unknown
MSA required
Unknown
DPA available
Unknown
Security review required
Unknown
Trial
Available, no card
Annual discount
16.7% off
API & developer surface
API-first product
Unknown
Sandbox present
Unknown
Webhooks
MCP mentioned
Trust & compliance
SSO / SAML
Unknown
RBAC
Unknown
Audit logs
Positioning & ecosystem
“Join over 35,000 people and businesses using SMTP2GO.”
Buyer persona
Six-step check: can an agent actually buy from SMTP2GO?
Discover price
Select a plan
Pay per task
Avoid a sales call
API docs without auth
Estimate cost upfront
Pros and cons for AI agents
Observational summary written by xpay from the signals captured on 2026-05-06. Not a review of the product — only of its current pricing posture for agent buyers.- Pricing is publicly visible on an indexable page — agents can read tiers without scraping past auth.
- Every advertised tier is self-serve; no tier requires scheduling a call.
- A free tier exists, lowering the bar for an agent builder to prototype before committing budget.
- No per-unit price was advertised, so an agent has no way to estimate the cost of a single task.
- API documentation is gated or absent; an agent cannot inspect the integration surface without authentication.
- PPU requires account creation and an issued API key; a fully unauthenticated agent purchase is not yet supported.
- No /.well-known/ai-pricing.json or equivalent machine-readable pricing manifest is published — agents must rely on HTML scraping.
How SMTP2GO could lift its score
Already agent-ready on Tier 1 signals. Publish `/.well-known/ai-pricing.json` to claim the +5 bonus and lock the verified badge.
| pricing_visible | true |
| headline_phrasing | Join over 35,000 people and businesses using SMTP2GO. — Already registered? Log in |
| tier_count | 1 |
| lowest_paid_entry_usd | 79 |
| free_tier | true |
| free_tier_terms | null |
| per_unit_price | $750/year Full email |
| annual_required | false |
| self_serve_paid_tiers | 1 |
| sales_only_tiers | 0 |
| public_api_docs_url | null |
| api_docs_auth_walled | null |
| ai_pricing_json_present | false |
| agents_txt_present | false |
| anonymous_purchase_path | false |
| per_unit_classification | {"unit_class":"message","confidence":"medium","agent_task_price_forecastable":"yes","rejected_reason":null,"evidence_text":"$750/year Full email"} |
| usage_headline_present | false |
| custom_tier_present | true |
| agent_friendly | {"ai_pricing_json":false,"agents_txt":false,"llms_txt":false,"sitemap_xml":true,"mcp_server_card":false,"agent_skills_index":false,"x402_supported":false} |
View raw extracted page text →
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See agent-ready picksSMTP2GO
64
/ 100 (rubric v2.0)Transactional Email
Join over 35,000 people and businesses using SMTP2GO. — Already registered? Log in
1
Yes
$79/mo
$750/year Full email
1 / 0
Auth-walled
No
Not published
2026-05-09
Tier-based subscription
SMTP2GO pricing starts at $0/mo for the Free plan; paid plans from $10/mo for the Starter plan up to $75/mo for the Professional plan. Billed monthly or annually.
Free plan (Free)
Discovery files and protocols
Side-channel signals — informational, not part of the score. Each protocol is independent; adoption signals the publisher is thinking about agent buyers.ai-pricing.json
agents.txt
llms.txt
sitemap.xml
MCP Server Card
Agent Skills
x402 / MPP
Compare SMTP2GO with peers
Highest-scoring companies in the same category that an AI agent might evaluate as an alternative.Mailgun
87
Amazon SES
85
Mailchimp Transactional Email
85
Postmark
82
UniOne
77
AhaSend
77
Zoho ZeptoMail
73
Aritic Mail
73
Explore the Agent-Ready SaaS Index
25,480+ SaaS scored on agent-buyability — browse by readiness band, category, or jump straight to a pay-per-run tool on xpay.tools.