Postwix

Free plan APIWeb

What Postwix is

Postwix is a webmail email service designed to work in browsers across devices, including mobile browsers. You can connect a mailbox from another provider and read its messages inside Postwix. A REST API provides programmatic access to folders, messages, and search results. The service lists 20 as its mailbox storage figure, supports aliases, and offers an ad-free inbox. Postwix says email is encrypted, it does not show ads, read mail, or sell user data, and sign-in codes and confirmations arrive within seconds. An account-recovery flow is available for forgotten passwords. Mobile users can add the webmail to a phone’s home screen. The site recommends DKIM, SPF, and DMARC configuration, with status checks in the Admin Dashboard. The Free plan costs nothing, billed forever, and includes 1 GB encrypted storage, webmail on every device, and standard support. Unlimited costs $5 a month after three free months.

Who it suits

Postwix suits people wanting browser-based email with mobile access, aliases, and an ad-free inbox. Developers can use its REST API, while users with other mailboxes can read them through external inbox sync.

What it does well

Browser inbox works across devices
External mailbox sync is available
REST API exposes folders, messages, and search
Ad-free inbox with stated encryption
Free plan billed forever

What to know first

Free plan includes 1 GB storage
Unlimited costs $5 a month after trial period
DKIM, SPF, and DMARC require configuration

Plans

Plan	Billed and limits	Price
Free	forever · 1 GB encrypted mailbox storage · Webmail on every device · Standard email support	Free
Unlimited	Free for your first 3 months, then $5/month. Cancel anytime. · 20 GB encrypted mailbox storage · High-priority customer support · Unlimited folders, labels and aliases · External inbox sync from other providers	$5 a month

As postwix.com lists them, read 11 Oct 2026. The maker's own page has the final word.

Verdict

Postwix combines browser email, external inbox access, aliases, and developer API features. Its free tier covers core webmail, while the Unlimited plan adds more storage and broader mailbox features for a monthly fee.

Facts from Postwix's own pages

Ad-free inbox: Yes · postwix.com, 22 Sept 2026
Email aliases: Yes · postwix.com, 22 Sept 2026
Developer access: Postwix offers a REST API to read folders, messages, and search results from code. · postwix.com, 11 Oct 2026
Email authentication: The help center advises configuring DKIM, SPF, and DMARC records and says their status can be checked in the Admin Dashboard. · postwix.com, 11 Oct 2026
Email delivery: The site says sign-in codes and confirmations arrive within seconds. · postwix.com, 11 Oct 2026
External inbox sync: Users can connect a mailbox from another provider and read its mail in Postwix. · postwix.com, 11 Oct 2026
Free plan: Yes · postwix.com, 22 Sept 2026
Mailbox storage: 20 · postwix.com, 22 Sept 2026
Mobile access: The webmail works in mobile browsers and can be added to a phone's home screen. · postwix.com, 11 Oct 2026
Platform access: web_and_mobile · postwix.com, 22 Sept 2026
Privacy: The site says email is encrypted and that it does not show ads, read mail, or sell user data. · postwix.com, 11 Oct 2026
Product: Postwix provides email with a webmail inbox that works in a browser across devices. · postwix.com, 11 Oct 2026
Recovery: The site describes an account recovery flow for users who forget their password. · postwix.com, 11 Oct 2026
Support: The homepage says a human replies within hours, and the help center says support is available 24/7. · postwix.com, 11 Oct 2026

Where Postwix stands on Freedom251

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