Email on Acid vs Mailosaur

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.

Email on Acid

See full pricing history

USD · US · source: www.emailonacid.com

Plan	Pricing	Charged by	Offer type
Basic Mailgun Inspect Highlighted	USD 99 monthly $99/month	Flat · published subscription	Standalone · Fixed
Premium Mailgun Inspect	USD 199 monthly $199/month	Flat · published subscription	Standalone · Fixed
Contract Mailgun Inspect	Contact sales Custom pricing	Flat · published subscription	Standalone · Contact sales

Mailosaur

See full pricing history

USD · US · source: mailosaur.com

Plan	Pricing	Charged by	Offer type
personal — annual billing	USD 20 monthly · USD 20 / month with annual commitment From $ 20 per month , billed annually	Flat · per month , billed annually	Standalone · Starting at

What each plan includes

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

Email on Acid

Basic Mailgun Inspect

Official plan card Users: Unlimited

Limited
Official plan card Email previews: 1,000/month

Limited
Official plan card Preview clients and devices: 100+

Limited

Premium Mailgun Inspect

Official plan card Users: Unlimited

Limited
Official plan card Email previews: 2,000/month

Limited
Official plan card HTML, link, image, and spam checks: Included

Contract Mailgun Inspect

Official plan card Users: Unlimited

Limited
Official plan card Preview allowance: Custom

Limited
Official plan card Phone and chat support: Included

Mailosaur

personal — annual billing

Highlights Users: Includes 1 user With support for up to 3 users

Included
Highlights Inboxes: 1 inbox (with unlimited email addresses)

Included
Highlights Unique domain name per inbox: Each inbox has a unique domain name

Included
Highlights Inbound emails: From 15,000 inbound emails/month

Included
Highlights Email compatibility testing: Included
Highlights API for test automation: Included
Highlights Forward individual emails to external addresses: Included

How their prices changed

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

Email on Acid

August 27, 2026 Source
- Basic Mailgun Inspect: USD 99 monthly
- Premium Mailgun Inspect: USD 199 monthly
- Contract Mailgun Inspect: Contact sales

Mailosaur

August 27, 2026 Source
- personal — annual billing: USD 20 monthly · USD 20 / month with annual commitment