Mailarrow
Mailarrow scores 44/100 on xpay's Agent-Ready Index v2: partial pricing visibility; self-serve checkout is available; API access is partial.
Mailarrow — 2 products
Basic
$39/mo
flatProfessional
$59/mo
flatGrowth
$99/mo
flatHow Mailarrow 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
0 / 20
Free entry path
0 / 7
No sales call required
7 / 7
Card / wallet / x402 payment
5 / 6
Machine-readable bonus (MCP / OpenAPI)
0 / 10
Total
44 / 100
What it actually costs at typical scale
Basic plan, 6,000 emails/month
$39/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
Purchase orders supported
MSA required
DPA available
Security review required
Trial
7 days (no card)
API & developer surface
API-first product
Sandbox present
Unknown
Webhooks
MCP mentioned
Positioning & ecosystem
“Simple pricing for your business”
Buyer persona
Six-step check: can an agent actually buy from Mailarrow?
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.
- No /.well-known/ai-pricing.json or equivalent machine-readable pricing manifest is published — agents must rely on HTML scraping.
How Mailarrow 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 | Simple pricing for your business — Start with cold email and get an instant ROI |
| tier_count | 1 |
| lowest_paid_entry_usd | 39 |
| free_tier | true |
| free_tier_terms | null |
| per_unit_price | null |
| annual_required | true |
| self_serve_paid_tiers | 0 |
| sales_only_tiers | 1 |
| 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 | null |
| 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 picksMailarrow
44
/ 100 (rubric v2.0)Email Marketing
Simple pricing for your business — Start with cold email and get an instant ROI
1
Yes
$39/mo
0 / 1
Auth-walled
No
Not published
2026-05-09
Multi-product subscription
Mailarrow pricing starts at $32/mo for the Basic plan; free trial available; paid plans up to $99/mo. Billed monthly.
7-day free trial (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 Mailarrow with peers
Highest-scoring companies in the same category that an AI agent might evaluate as an alternative.Plunk
83
Flexmail
78
Sensorpro
76
Mailrelay
74
Selzy
74
Rejoiner
71
Sendloop
71
lemlist
69
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.