Mailgun
Mailgun scores 87/100 on xpay's Agent-Ready Index v2: partial pricing visibility; self-serve checkout is available; a public API exists with documentation; usage-based / per-token pricing is published; a free entry path exists.
Mailgun pricing
Free
Free
Basic
$15/mo
flatFoundation
$35/mo
flatScale
$90/mo
flatEnterprise
Contact sales
How Mailgun scores on the agent-ready dimensions
Public pricing visibility
15 / 15
Self-serve checkout
15 / 15
Public API + docs
18 / 20
Usage-based / metered pricing
20 / 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
87 / 100
What it actually costs at typical scale
5,000 emails on Basic plan
$15/mo
12,000 emails on Basic plan (2,000 overage)
$18.6/mo
60,000 emails on Scale plan
$90/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
Invoice payment available
Unknown
Purchase orders supported
Unknown
MSA required
Unknown
DPA available
Unknown
Security review required
Unknown
Trial
30 days (no card)
API & developer surface
API-first product
Sandbox present
Webhooks
MCP mentioned
Trust & compliance
SSO / SAML
RBAC
Audit logs
Data residency
Positioning & ecosystem
“Flexible plans built for email delivery”
Buyer persona
Six-step check: can an agent actually buy from Mailgun?
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 Mailgun 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 | Flexible plans built for email delivery — Email API & SMTP services to send, receive, and track emails |
| tier_count | 3 |
| lowest_paid_entry_usd | 0 |
| free_tier | true |
| free_tier_terms | null |
| per_unit_price | $1.10 / 1,000 emails from |
| annual_required | false |
| self_serve_paid_tiers | 2 |
| sales_only_tiers | 0 |
| public_api_docs_url | https://www.mailgun.com/blog/dev-life/developer-designer-collaboration/ |
| api_docs_auth_walled | false |
| ai_pricing_json_present | false |
| agents_txt_present | false |
| anonymous_purchase_path | false |
| per_unit_classification | {"unit_class":"other","confidence":"medium","agent_task_price_forecastable":"yes","rejected_reason":null,"evidence_text":"$1.10 / 1,000 emails from"} |
| 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} |
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See agent-ready picksMailgun
87
/ 100 (rubric v2.0)Transactional Email
Flexible plans built for email delivery — Email API & SMTP services to send, receive, and track emails
3
Yes
Free
$1.10 / 1,000 emails from
2 / 0
Public
No
Not published
2026-05-09
Tier-based subscription
Mailgun pricing starts at $0/mo for the Free plan; paid plans range from $15/mo for Basic up to $90/mo for Scale. Billed monthly and monthly.
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 Mailgun with peers
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85
Mailchimp Transactional Email
85
Postmark
82
UniOne
77
AhaSend
77
Zoho ZeptoMail
73
Aritic Mail
73
Sweego
71
Explore the Agent-Ready SaaS Index
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