The FlowCrypt Insider’s Guide
Everything we know about FlowCrypt in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
FlowCrypt
The Insider’s Guide
OpenPGP encryption for Gmail, as an extension and mobile apps
Every plan, grade, refund rule and rival among email apps, read from FlowCrypt’s own pages.
Made by FlowCrypt a.s. · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from FlowCrypt’s own pages, its app-store listings and our grades. Every fact in it is on FlowCrypt’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
3.0
GPA, above 55 of the 70 other email apps we grade
FlowCrypt adds OpenPGP encryption to Gmail through browser extensions, with Android and iOS apps as well. It is free for companies with fewer than 100 users, and an enterprise version adds admin controls, key management and an SLA. A separate Workspace Key Manager product covers Google Workspace client-side encryption.
To get you started, here are 8 things to know about FlowCrypt, taken from its own pages and our grades.
Workspace Key Manager is priced apart in euros.
- 1
Best for encryption inside Gmail
It works with Gmail only, and the Outlook version is on a waitlist.
- 2
There is a free plan
Free for companies with fewer than 100 users, including password-protected messages and attachments up to 25MB.
- 3
It runs on 2 platforms
iOS and Android, with a browser extension too.
- 4
Encryption inside Gmail
Send and read OpenPGP-encrypted messages from the Gmail interface, using the Chrome extension or the Firefox extension.
- 5
Password-protected messages
Send an encrypted message to anyone who does not use OpenPGP, choose when it expires, and let them reply without a plugin.
- 6
Encrypted contact page
Receive messages and files through a page where senders can write to you without installing anything.
- 7
A 3.0 GPA, above 55 of 70
That is against the other email apps we grade, on value, the free plan, features, ease of use and platforms.
- 8
Keep it
To replace FlowCrypt you would be making an email client: sending, receiving, threading and searching years of mail. That is not a weekend's work, with an AI app builder or without one.
FlowCrypt at a glance
- Pricing
- Free plan
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- iOS, Android, Browser extension
- Made by
- FlowCrypt a.s., since 2016
- Category
- Email Apps
- Our grade
- 3.0 GPA, very good
The report card
Best for encryption inside Gmail
FlowCrypt adds encryption to Gmail, with password-protected messages to anyone, and it's free for companies under 100 users. It works with Gmail only, and the Outlook version is on a waitlist. Workspace Key Manager is priced apart in euros.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | Free for companies with under 100 users per domain, with password-protected messages and 25MB attachments. Enterprise is quote-only. |
| Free plan and trial | A | Free outright for domains under 100 users, with encrypted Gmail, password-protected messages, an encrypted contact page and a mobile app. |
| Features | C | Encryption inside Gmail, password-protected messages, an encrypted contact page, mobile apps and enterprise administration. It does that job fully, but it's a smaller job, and it covers Gmail only. |
| Ease of use | C | No store rating on record. You set up keys, and recipients without FlowCrypt open messages with a password, so there's a learning curve. |
| Platforms and integrations | B | A browser extension plus iOS and Android apps, with Gmail, Google Workspace, Auth0 and OneLogin connections. No desktop app. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who FlowCrypt is for
- Fits if you use Gmail and want to send encrypted messages to anyone
- Works for a company under 100 users that wants it free
Who it is not for
- Not for you if you use Outlook, as that version is on a waitlist
- Watch out: Workspace Key Manager is priced apart, €799 a year for 10 seats and €899 for 20
- Watch out: Google's client-side encryption needs a Workspace Enterprise Plus, Education Standard or Education Plus licence
- Tight if you're a company over 100 users, as that's sold through sales with no published price
Good to know
Good for
- Gmail users who need PGP encryption without leaving the browser
- Small companies that want encrypted mail with no license fee
- Organizations that need central key management and an SLA
Worth knowing
- It works with Gmail only; an Outlook version is on a waitlist.
- The free tier covers fewer than 100 users per domain and is described for companies below that size.
- Workspace Key Manager is priced separately in euros: €799 a year for 10 seats and €899 for 20.
- Using Google's client-side encryption needs a Workspace Enterprise Plus or Education Standard or Plus license.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
2
plans to choose from
FlowCrypt has a free plan.
Free
$0
Encrypted Gmail messages, password-protected messages to anyone, encrypted contact page, mobile app; under 100 users per domain.
Enterprise
Custom
Adds over 100 users per domain, admin panel, domain-wide rules, server key management, SLA and DPA; sold through sales.
The free plan
Free for companies with fewer than 100 users, including password-protected messages and attachments up to 25MB.
Read from flowcrypt.com on Nov 12, 2026.
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
3
Places it runs: iOS, Android and Browser extension
OpenPGP encryption for Gmail, as an extension and mobile apps. Here is what it does, as its own site describes it, and what it covers: end-to-end encrypted, email client.
Encryption inside Gmail, password-protected messages, an encrypted contact page, mobile apps and enterprise administration.
- Encryption inside Gmail
- Send and read OpenPGP-encrypted messages from the Gmail interface, using the Chrome extension or the Firefox extension.
- Password-protected messages
- Send an encrypted message to anyone who does not use OpenPGP, choose when it expires, and let them reply without a plugin.
- Encrypted contact page
- Receive messages and files through a page where senders can write to you without installing anything.
- Mobile apps
- Android and iOS apps are listed on the download page, along with extensions for Brave, Edge and Opera.
- Enterprise administration
- An admin panel with domain-wide restrictions, custom security rules, SSO through OIDC, and key management on your own server.
- Workspace Key Manager
- A separate key service for Google Workspace client-side encryption of Gmail, Drive, Docs and Calendar.
Where it runs
- iOS
- Android
- Browser extension
What it works with
- Gmail
- Google Workspace
- Auth0
- OneLogin
FlowCrypt is made by FlowCrypt a.s., and has been around since 2016.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
55/70
Other email apps it is graded above
FlowCrypt's GPA of 3.0 is higher than 55 of the 70 other email apps we grade, and level with 9.
It stands best on free plan and trial (A, above 55 of 70) and worst on features (C, above 0).
Each grade against the category
Every bar is all 71 email apps we grade, cut by the letter each got. FlowCrypt’s own letter is outlined.
- AValue for moneyAbove 51 of 70
- AFree plan and trialAbove 55 of 70
- CFeaturesAbove 0 of 70
- CEase of useAbove 1 of 70
- BPlatforms and integrationsAbove 25 of 70
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace FlowCrypt you would be making an email client: sending, receiving, threading and searching years of mail. That is not a weekend's work, with an AI app builder or without one.
It is one of the better ones too: its GPA of 3.0 is higher than 55 of the 70 other email apps we grade.
What you could not
- An email client: sending, receiving, threading and searching years of mail.
- A real app for iOS and Android. Something home-made would be a web page.
- End-to-end encryption done properly.
- What a company asks for before it lets staff use something: single sign-on.
What this rests on. FlowCrypt’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
Proton Mail, Tuta Mail, Mailfence, Hushmail and StartMail
The 5 tools FlowCrypt is most often weighed against, with where each one differs from it.
- 3.0GPA
Proton Mail
Free plan · from $3.99/mo
End-to-end encrypted email service based in Switzerland.
- Only FlowCrypt lists a browser extension.
- Only Proton Mail lists a web app.
- Only Proton Mail lists macOS, Windows and Linux apps.
- 2.8GPA
Tuta Mail
Free plan · from €3/mo
End-to-end encrypted email and calendar from Germany.
- Only FlowCrypt lists a browser extension.
- Only Tuta Mail lists a web app.
- Only Tuta Mail lists Windows, macOS and Linux apps.
- 2.6GPA
Mailfence
Free plan · from €2.50/mo
Private email from Belgium with built-in OpenPGP encryption.
- Only FlowCrypt lists a browser extension.
- Only Mailfence lists a web app.
- Mailfence also covers calendar and documents.
- 2.2GPA
Hushmail
Free trial · from $11.99/mo
Encrypted email and e-signable forms for healthcare practices.
- FlowCrypt has a free plan. Hushmail does not, though it has a free trial.
- Only FlowCrypt lists an Android app.
- Only FlowCrypt lists a browser extension.
- 1.8GPA
StartMail
Free trial · from $4.99/mo
Paid private email from the Netherlands with unlimited aliases.
- FlowCrypt has a free plan. StartMail does not, though it has a free trial.
- Only FlowCrypt lists an iOS app.
- Only FlowCrypt lists a browser extension.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
12
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is FlowCrypt free?
FlowCrypt has a free plan. Free for companies with fewer than 100 users, including password-protected messages and attachments up to 25MB.
How much does FlowCrypt cost?
FlowCrypt lists 2 plans. Free: $0.
What platforms does FlowCrypt work on?
FlowCrypt is available on iOS and Android. It also has a browser extension.
Does FlowCrypt have a Windows app?
No Windows app was listed when its pages were read on Nov 12, 2026. FlowCrypt is listed for iOS and Android.
Does FlowCrypt have a macOS app?
No macOS app was listed when its pages were read on Nov 12, 2026. FlowCrypt is listed for iOS and Android.
Is FlowCrypt open source?
FlowCrypt is not described as open source on its own site, as read on Nov 12, 2026.
Is FlowCrypt end-to-end encrypted?
FlowCrypt describes itself as end-to-end encrypted on its own site. Nobody here has audited that.
What does FlowCrypt integrate with?
FlowCrypt's listing names Gmail, Google Workspace, Auth0 and OneLogin.
Who makes FlowCrypt?
FlowCrypt is made by FlowCrypt a.s. It dates from 2016.
What are the alternatives to FlowCrypt?
The closest alternatives to FlowCrypt in our directory are Proton Mail, Tuta Mail, Mailfence, Hushmail and StartMail.
How does FlowCrypt compare with other email apps?
FlowCrypt's GPA of 3.0 is higher than 55 of the 70 other email apps we grade, and level with 9.
Could I make my own version of FlowCrypt?
To replace FlowCrypt you would be making an email client: sending, receiving, threading and searching years of mail.
Where this guide comes from
The prices, plans, platforms and features were read from FlowCrypt’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from FlowCrypt's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by FlowCrypt a.s. Prices change, so check flowcrypt.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
5,038
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
5,038
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- FlowCrypt, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/flowcrypt
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "FlowCrypt: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/flowcrypt
Know someone choosing between email apps?
Send them this guide: toolgpa.com/tools/flowcrypt/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded email apps after FlowCrypt, each with an Insider's Guide of its own.
- Email Apps Insider's GuideEvery one of the 74 email apps we grade, compared
- Microsoft Outlook Insider's GuideMicrosoft's email and calendar app for desktop, mobile and web3.6 GPA
- BlueMail Insider's GuideCross-platform email client with a unified inbox and built-in AI3.2 GPA
- GMX Mail Insider's GuideFree webmail with 65GB storage, aliases and a mail collector3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what FlowCrypt’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. FlowCrypt is a trademark of its owner, and this guide is not made, paid for or approved by FlowCrypt a.s. Prices and plans change: check flowcrypt.com before you buy.