Mailsac — Disposable email for QA and developers: any name @mailsac.com, REST API, webhooks and WebSockets. 1,500 free API operations a month; private inboxes and custom domains from $18 a month.
What is Mailsac
Mailsac is a tool for automated email checks: sign-up, trigger and post-lead emails from landing pages. Since September 2026 it belongs to US-based Habitat AI.
Official site: mailsac.com. Price: free, from $18/mo.
Mailsac features
- REST API, webhooks, WebSockets
- 1,500 free API operations a month
- Custom domains on paid plans
- Private inboxes on paid plans
How long Mailsac keeps mail
No retention guarantee; the free tier stores up to 50 messages.
Mailsac limitations
- Free inboxes are public
- Plans: Indie $18, Business $89, Business+ $199 a month
- No general outgoing mail
Who Mailsac is for
Teams that test email sequences and landing page forms automatically, in code.
When not to use a temporary email
Never register ad accounts, payment services, affiliate network accounts or anything with money on a disposable address: if you lose access, you can't reset the password or pass verification. Use temporary mail for trials, newsletters, gated downloads and testing your own landing page forms.
Mailsac alternatives
If Mailsac doesn't fit, try: TemporaryMail.com, CrazyMailing, FakeMail, Mohmal. Full list: temporary email services.
Data checked: October 2026. Terms may change, verify on the official site. Sources: mailsac.com/pricing, docs.mailsac.com
