Email on Acid vs Signadot

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

Signadot

See full pricing history

USD · US · source: www.signadot.com

Plan	Pricing	Charged by	Offer type
Starter	Free Free	Flat · published offer	Standalone · Free
Business	USD 250 monthly · USD 225 / month with annual commitment $250/month; 10% discount for yearly subscription	Flat · published offer	Standalone · Fixed
Enterprise	Contact sales Custom	Flat · published offer	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.

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

Signadot

Starter

Plan card Sandboxes per month: 50

Limited
Plan card Test invocations per month: 100

Limited
Plan card Concurrent devboxes: 10

Limited

Business

Plan card Sandboxes per month: 100

Limited
Plan card Test invocations per month: 200

Limited
Plan card Kubernetes clusters: 3

Limited

Enterprise

Plan card Unlimited clusters and plugins: 0

Limited
Plan card SSO and SOC 2 report: 1

Limited
Plan card Premium support: 2

Limited

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

Signadot

August 27, 2026 Source
- Starter: Free
- Business: USD 250 monthly · USD 225 / month with annual commitment
- Enterprise: Contact sales