Productivity & SaaSFree plan

K-9 Mail Free

K-9 Mail is an open-source email client for Android.

K-9 MailUpdated monthly · checked 5 h ago

K-9 Mail Free is a productivity and SaaS perk from K-9 Mail, offering a free app (open source, Android), with no funding required.

Value
Free
Who qualifies
No funding needed
Benefit type
Free plan
Apply at K-9 Mail

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Get an email if K-9 Mail Free closes, changes its offer or sets a deadline. Also every new Productivity & SaaS program as it opens. Unsubscribe in one click.

While you apply

Also useful for team productivity

Applying to K-9 Mail takes a few minutes. Referral links, picked for fit and ordered by fit (70%) and what a signup earns us (30%), at no cost to you. They never change this page's ranking.

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What you get

Inside K-9 Mail Free

K-9 Mail is an open source email client focused on making it easy to use email on Android. Its project page points to Thunderbird for Android, which is available now. The page lists no paid plan.

Source: The provider's official program page

Eligibility

Who it's for

Free planAny startup
Funding / backing
No funding needed
Geography
Global
Recurring / expiry
Free with no time limit.
Other requirements
The project page points to Thunderbird for Android, which is available now.
How to claim

How to apply for K-9 Mail Free

Steps to apply
  1. 1Install K-9 Mail from k9mail.app.
  2. 2No application is needed.
Good to know: Plans read on k9mail.app on October 29, 2026.
Apply at K-9 Mail

Source: The provider's official program page

Value is the headline maximum K-9 Mail advertises. What your company actually receives depends on your eligibility and how you use the program, and terms can change. A comparison, not endorsed by the programs listed. A link labeled as a referral link may earn us a commission, and a program labeled Same owner comes from the company that runs StartupPerks. Confirm current terms on the provider's page.
Questions

K-9 Mail Free: common questions

What do you get with K-9 Mail Free?

K-9 Mail Free offers a free app (open source, Android).

Who qualifies for K-9 Mail Free?

K-9 Mail Free is open to any startup, with no funding required. The project page points to Thunderbird for Android, which is available now.

Do I need to be VC-backed or in an accelerator to get K-9 Mail Free?

No. K-9 Mail Free is open to any startup that meets the stated criteria, no investor or accelerator backing required.

How do I apply for K-9 Mail Free?

Install K-9 Mail from k9mail.app. No application is needed.

How long do I have to use K-9 Mail Free, and does it expire?

Free with no time limit.

Is K-9 Mail Free available outside the US?

K-9 Mail Free is available globally, subject to the provider's terms.

Free email clients, comparedK-9 Mail's free plan next to every other free email clientWhat each email client gives you free today, its main limit and what the first paid plan costs, read from each provider's own page.
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