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Market around ai-postbox-protocol

A no-code convention that lets multiple AI agents record work logs as unsent mailbox drafts, helping them see completed tasks and avoid duplicate work. Designed for users running several email-connected AI assistants.

Visit github.com ↗Pricing page ↗

Explore the market

Prices and medians update for the tier you select.

Compare at
ai-postbox-protocol · Pro
No Pro plan
—
Pro-provider median
—
insufficient comparable pricing
vs Pro providers
No comparison
ai-postbox-protocol doesn't sell Pro
ⓘ Comparisons are same provider type (provider) and same buyer tier (Pro). Never across tiers.
Market density
60th pctile
215 competing vendors
Comparable listings · 30d
—
Agents · Pro median
$39.99/mo
7 priced · $26.75–$49 mid 50%
MCP servers · Pro median
$22/mo
4 priced · —–— mid 50%

Agents cost 1.8× MCP servers at the Pro tier.

Price spectrum · Pro plans · 14 of 18 providers priced · log scale · $4.99 → $49.99/mo
Agents MCP servers Platforms◻ shaded = middle 50% · line = median (all types)ai-postbox-protocol has no comparable Pro price — not plotted

Products in this market

Ranked by how closely each one matches ai-postbox-protocol's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.

OOther1Ranked by similarity
ai-postbox-protocolthis listing
● OTHER
no public price
MMCP servers26Ranked by similarity
Email MCP Server
● MCP79% similar
no public price
Private Email MCP
● MCP79% similar
no public price
mailroom-mcp
● MCP77% similar
no public price
MCP Emails
● MCP77% similar
$15/mo Pro
-32% vs Pro median
Mailoo
● MCP76% similar
no public price
pidge
● MCP76% similar
no public price
TeliTask MCP Server
● MCP76% similar
no public price
Personal MCP
● MCP75% similar
no public price
Mail MCP Server
● MCP75% similar
no public price
Atomicmail
● MCP75% similar
no public price
Relatio Crm
● MCP75% similar
no public price
Universal Email MCP
● MCP75% similar
no public price
MI
Misarmail
● MCP74% similar
$49.99/mo Pro
+127% vs Pro median
MCP IMAP/SMTP
● MCP74% similar
no public price
Postfach MCP
● MCP74% similar
no public price
Refine
● MCP74% similar
$4.99/mo Pro
-77% vs Pro median
Mail Brief MCP
● MCP74% similar
no public price
Agentmail
● MCP74% similar
no Pro plan
entry $2/mo
IMAP MCP
● MCP74% similar
no public price
BumbleBox MCP Server
● MCP74% similar
$29/mo Pro
+32% vs Pro median
Mailbox
● MCP74% similar
no public price
MCP Multi Gmail
● MCP73% similar
no public price
Kebivo
● MCP73% similar
no public price
Email
● MCP73% similar
no public price
Bureau
● MCP73% similar
no public price
Gauge
● MCP73% similar
no public price
PPlatforms4Ranked by similarity
Taskaid
● PLATFORM77% similar
no Pro plan
entry $10/mo
Command Mail
● PLATFORM77% similar
$29/mo Pro
Confer
● PLATFORM74% similar
no public price
AgentRelay
● PLATFORM73% similar
no Pro plan
entry $19/mo
AAgents19Ranked by similarity
Super Intern
● AGENT76% similar
no public price
Stamp The Secretary
● AGENT75% similar
no Pro plan
entry $20/mo
Mailmaestro
● AGENT75% similar
no public price
Rytr
● AGENT74% similar
$49/mo Pro
+23% vs Pro median
Reply Zero
● AGENT74% similar
$35/mo Pro
-12% vs Pro median
Shortwave
● AGENT74% similar
no public price
Espa
● AGENT74% similar
$39.99/mo Pro
0% vs Pro median
Banger Mail
● AGENT74% similar
$24/mo Pro
-40% vs Pro median
Relate
● AGENT74% similar
no public price
AI Chief of Staff
● AGENT73% similar
no public price
Cora
● AGENT73% similar
$20/mo Pro
-50% vs Pro median
Serena AI
● AGENT73% similar
$12/mo Pro
-70% vs Pro median
Ai Emaily
● AGENT73% similar
$12.42/mo Pro
-69% vs Pro median
Email Agent
● AGENT73% similar
no public price
Bubbl AI
● AGENT73% similar
no public price
Jace Ai
● AGENT73% similar
no public price
Dimension
● AGENT73% similar
$9/mo Pro
-77% vs Pro median
Fyxer
● AGENT73% similar
$49/mo Pro
+23% vs Pro median
inkling
● AGENT73% similar
no public price

Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.