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  7. Mailosaur

Mailosaur logo

Mailosaur

Agent-Ready Verified
Agent-Ready SaaS Index · mailosaur.com · scored 2026-05-09 · rubric v2.0
Score 82 / 100
Email Testing
Self-serve checkout
Public API

Mailosaur scores 82/100 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.

See Mailosaur pricing summaryLive pricing page
Pricing
Mailosaur pricing
As of 2026-05-09 · mailosaur.com/pricing/
Personal
$20/user/mo
billed annually
Unlimited email addresses
1 inbox with unique domain
API access
SMTP connectivity
Core
$50/user/mo
billed annually
5 seats included
Multiple inboxes
Unlimited email addresses
POP3 & IMAP
SMS and authentication add‑on
Enterprise
Sales
Contact sales
Custom users
Custom inboxes
Single Sign‑On (SAML2 & OIDC)
SCIM support
Dedicated account manager
Score breakdown · rubric v2.0
How Mailosaur scores on the agent-ready dimensions

Public pricing visibility

15 / 15

Self-serve checkout

15 / 15

Public API + docs

16 / 20

Usage-based / metered pricing

20 / 20

Free entry path

4 / 7

No sales call required

7 / 7

Card / wallet / x402 payment

5 / 6

Machine-readable bonus (MCP / OpenAPI)

0 / 10

Total
82 / 100
Effective pricing
What it actually costs at typical scale
1 user, Personal plan (annual billing)
$20/mo
· Annual billing (monthly equivalent $20)· Includes up to 15,000 inbound emails
Confidence: high
5 users, Core plan (annual billing)
$50/mo
· Annual billing (monthly equivalent $50)· Includes up to 75,000 inbound emails· 5 seats included
Confidence: high
Agent purchase verdict
Can an autonomous agent transact here?
Agent-ready
LLM score: 85/100

Can create account

Yes

Can enter payment method

Yes

Can upgrade plan

Yes

Can buy more usage

No

Can cancel online

Yes

Payment methods

card

Human approval recommended

No

Pricing transparency

full

Purchase motion

self_serve

Demo required

No

Quote required

No

Annual commit required

No

Auto-renewal mentioned

Yes

Cancellation policy visible

Yes

Refund policy visible

No

Invoice payment available

Yes

Purchase orders supported

No

MSA required

No

DPA available

No

Security review required

No

Trial

14 days (no card)

Annual discount

20% off

API readiness
API & developer surface

API-first product

Yes

Sandbox present

No

Webhooks

No

MCP mentioned

No

Enterprise signals
Trust & compliance

SSO / SAML

Yes

RBAC

Unknown

Audit logs

Unknown

Competitive intel
Positioning & ecosystem
Headline

“One platform. Total testing confidence.”

Buyer persona

developer
qa
product

Agent purchase simulation
Six-step check: can an agent actually buy from Mailosaur?
✓

Discover price

✓

Select a plan

✗

Pay per task

✓

Avoid a sales call

◐

API docs without auth

✗

Estimate cost upfront

Analysis
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.
✓ For an AI agent
  • 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.
◐ Opportunities for the provider
  • 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.
One-line fix
How Mailosaur could lift its score

Add a per-unit price (e.g. $X / 1K calls) to the pricing page so an agent can compute its own cost before committing.

pricing_visible

true

headline_phrasing

One platform. Total testing confidence. — Automate and test email and SMS workflows

tier_count

0

lowest_paid_entry_usd

20

free_tier

false

free_tier_terms

null

per_unit_price

null

annual_required

true

self_serve_paid_tiers

1

sales_only_tiers

0

public_api_docs_url

https://mailosaur.com/docs

api_docs_auth_walled

false

ai_pricing_json_present

false

agents_txt_present

false

anonymous_purchase_path

false

per_unit_classification

{"unit_class":"message","confidence":"rejected","agent_task_price_forecastable":"no","rejected_reason":"reject-context word found within ±200 chars (seat/period/credit/etc.)","evidence_text":"$37.50 per month Email"}

usage_headline_present

false

custom_tier_present

true

agent_friendly

{"ai_pricing_json":false,"agents_txt":false,"llms_txt":true,"sitemap_xml":true,"mcp_server_card":false,"agent_skills_index":false,"x402_supported":false}

View raw extracted page text →
Page heading: One platform. Total testing confidence.
CTAs (40): Mailosaur Ltd · Products · Customers · Pricing · Docs · Company · Sign in · Request a demo · Start for free · Open menu · EngineeringAutomate and test email and SMS workflows · Quality AssuranceEmpower your team and improve email quality
Price tokens (12): $20per month · $50per month · $37.50 per month Email previe · $25 per month enterpriseBe · $20per month · $50per month · $37.50 per month Email previe · $25 per month enterpriseBe · $20per month · $50per month · $37.50 per month Email previe · $25 per month enterpriseBe
Mailosaur LtdProductsCustomersPricingDocsCompanySign inRequest a demoStart for freeOpen menuMailosaur for...EngineeringAutomate and test email and SMS workflowsQuality AssuranceEmpower your team and improve email qualityProduct ManagementDemo and improve your product using email and SMSMarketingDeliver high-quality, targeted email campaignsSolutionsEmail TestingCreate end-to-end tests that depend on emailSMS TestingAutomate and use SMS messages during testingEmail PreviewsView your email in Gmail, Outlook and mobile devicesTest automationSee how easy it is to automate all the tests you thought you couldn'tFeaturesRulesCreate automated rules that simulate every type of scenario including email bounces and out-of-office repliesCustom DomainsUnlimited recognisable email addresses for your brandEnterprise SSOCentralized security for your organizationForwarding RulesSet up rules that automatically forward your emails to certain inboxesLinks and CodesPeace of mind that you are sending exactly what you mean to, everytimeMessage AnalysisEnsuring the quality of your content is never compromisedSending, Replying and Forwarding EmailsSeamless email and SMS interactions, every timeVirtual SMTP ServersUse Mailosaur as a dummy SMTP server to catch every email your product sendsProductsCustomersPricingDocsCompanyStart for freeSign inRequest a demo One platform. Total testing confidence.Monthly billingAnnual billingSave 20%Explore plans by solutions:QA TestingSMS TestingEmail Previewspersona…
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Are you Mailosaur? Something off in this listing?
Agent-Ready Spec
Mailosaur
Agent-Ready Verified

82

/ 100 (rubric v2.0)
Category

Email Testing

Pricing model

One platform. Total testing confidence. — Automate and test email and SMS workflows

Tier count

0

Free tier

No

Lowest paid entry

$20/mo

Self-serve / sales-only tiers

1 / 0

Public API docs

Public

Anonymous purchase path

No

Machine-readable pricing

Not published

Last refreshed

2026-05-09

Pricing intelligenceInsights extracted from mailosaur.com/pricing/
Pricing model

Tier-based subscription

Agent-purchase verdict
Agent-ready
85/100 · v2.1
Canonical answer

Mailosaur pricing starts at $20/mo for the Personal plan; free trial available; paid plans up to $50/mo. Billed monthly or annually with 20% discount for annual.

Cheapest entry

Start for free

Actions
Open live pricing page
Verdict reflects Agent-Ready Verified status under rubric v2.0. Source observed at https://mailosaur.com/pricing/.
Agent-friendly features2 of 7 present
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

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CompanyAgentically Inc. (d/b/a xpay✦)1875 Mission St, Ste 103San Francisco, CA 94103, United Stateslegal@xpay.sh · privacy@xpay.sh
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