ArcBox vs MailSlurp

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

ArcBox

See full pricing history

USD · US · source: arcbox.dev

Plan	Pricing	Charged by	Offer type
Free — Linux and Windows	Free Free $0 to start Try Linux and Windows machines with usage credits. No card required.	Usage · Usage-based on every OS	Standalone · Free
Pro — Linux and Windows Highlighted	Usage-based billed by the second For teams running agents in production on Linux and Windows. Usage-based billed by the second For teams running agents in production on Linux and Windows.	Usage · Usage-based billed by the second	Standalone · Usage based

MailSlurp

See full pricing history

USD · US · source: app.mailslurp.com

Plan	Pricing	Charged by	Offer type
Free	Free $0 forever	Flat · published subscription	Standalone · Free
Pro Highlighted	USD 49.99 monthly $49.99/month	Flat · published subscription	Standalone · Fixed
Team	USD 129.99 monthly $129.99/month	Flat · published subscription	Standalone · Fixed
Enterprise	Contact sales Custom	Flat · published subscription	Standalone · Contact sales

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

ArcBox

Free — Linux and Windows

Highlights Concurrent environments: Up to 5

Included
Highlights Support: Community support

Included
Highlights Stopped Computers disk storage: Included

Pro — Linux and Windows

Highlights Concurrent environments: Higher concurrency and larger machines

Included
Highlights Team workspaces and API keys: Included
Highlights Snapshot storage and warm pools: Included
Highlights Priority email support: Included

MailSlurp

Free

Official plan card Agents: 1

Limited
Official plan card Reusable inboxes: 1

Limited
Official plan card Inbound emails: 500/month

Limited

Pro

Official plan card Agents: 3

Limited
Official plan card Inbox creations: 1,000/month

Limited
Official plan card Inbound emails: 5,000/month

Limited

Team

Official plan card Agents: 10

Limited
Official plan card Inbox creations: 5,000/month

Limited
Official plan card Storage: 5 GB included

Limited

Enterprise

Official plan card Agents: Unlimited

Limited
Official plan card Usage-based capacity: Included
Official plan card SAML, OIDC, and SCIM: Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

ArcBox

August 27, 2026 Source
- Free — Linux and Windows: Free
- Pro — Linux and Windows: Usage-based billed by the second For teams running agents in production on Linux and Windows.

MailSlurp

August 27, 2026 Source
- Free: Free
- Pro: USD 49.99 monthly
- Team: USD 129.99 monthly
- Enterprise: Contact sales