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Pick Your Plan

Prices are USD. Per-software team, except Enterprise.


Indie Plan

Business Plan

Enterprise Plan








No expiration
per month
per year
37% savings
per month
per year
11% savings
Base price per month
Base price per year
Billed yearly
Starting at $2,200
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Choose Indie
Choose Indie
Choose Business
Choose Business
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API Keys
Easily do anything with email. Generate a simple API key for programmatic API access.
Multiple User Logins
Share Mailsac account addresses, domains and messages with others via sub-accounts.
Additional $24 per user year
API Calls Per Month
Soft Limit
1,50050,00010 million24+ million
Private Addresses

Forward routing and POP3.

Swap for different addresses.

Comes with 10 outbound sends per address.

Easily route and forward email addresses.

250 additional private addresses with existing plan for:
$7 monthly
$50 yearly
Request Increase
Custom Domains
BYODomains Zero-Setup Subdomains

Send emails to a custom domain instead of @mailsac.com.

Unlimited disposable inboxes on a custom domain *

Extra features - Delete all messages in the domain. Higher throttling limits. Optional Catch-All inbox. Keep email messages private.

Choose a subdomain of msdc.co for zero setup, or add a few DNS entries to use your own domain.

Additional custom domains with existing plan for:
$7 monthly
$75 yearly
Request Increase
Message Storage
Number of messages stored before recycling. Across your private addresses, domains, and starred messages.5,000 additional stored messages with existing plan for:
$10 monthly
$100 yearly
Request Increase
Email Capture
Mailsac has a fake outbound capture service at capture.mailsac.com
Private Address Passwords
Every private address can have its own unique SMTP password.1
Mailsac can post email back to your server after it is received. Requires private email addresses. Uses API calls.
Slack Webhooks
Mailsac can forward emails directly to Slack's webhook gateway, so emails show up in chat.
Web Sockets for Private Addresses
Receive email over a persistent web socket connection to Mailsac. Uses API calls.
Web Sockets for Entire Domain
Receive email over a persistent web socket connection to Mailsac. A useful feature for testing email delivery. Uses API calls.
Named API Keys
Add custom names to API keys for tracking usage, and multiple apps.
Outgoing Messages (non-recurring)
Send / reply emails using the Mailsac website
Send using SMTP (in your mail app)
Send via REST API (developers)
Add 10,000
Unlimited Internal Sending to BYODomain Domain/Subdomains
When you use Mailsac's REST API or SMTP relay to send email to your custom Mailsac domain, it uses API calls but not Outbound Message Credits.
Purge Inbox
Instantly delete all mail for a private address.
Instantly delete all mail on a custom domain or subdomain, which is useful for testing.
Basic Analytics
Aggregated metrics for your domains, messages, and API usage. Know how many messages were received.
Message Logs
View debug logs showing messages received, forwarded, web sockets, and webooks.
15 mins15 mins> 1 mo> 1 mo
IP Whitelisting
Ensure Mailsac does not throttle or block your servers by whitelisting your IP addresses.
Community SupportPublic support on our forum is available for all users.
Email Support
Phone Support2 Hours Included
Vendor Due-Diligence
Cybersecurity Audit
Payment MethodCredit CardCredit CardPurchase Order, Credit Card, Wire Transfer
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Choose Indie
Choose Indie
Choose Business
Choose Business
Learn More
1. Private addresses are purchased separately.
2. Custom domains are purchased separately.
3. 2 hours included phone tech support for Enterprise. Additional hours can be prepaid in blocks.

Cancel Anytime

The Fine Print
Major credit cards are accepted. Payments are processed by Stripe and we never see your credit card details. By purchasing, you agree to all terms, acceptable use, and privacy statements. All prices USD, converted during checkout to other currencies.