Comparison

Mail1Click vs FlowCrypt

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mail1Click

This secure email service uses strong encryption to protect your communications. Send and receive encrypted messages with anyone, even those without the app. Access your encrypted mailbox via your device or a web interface.

Highlights
  • Strong encryption (RSA 4096-bit, AES 256-bit)
  • Send encrypted emails to any address
  • Receive encrypted emails from Mail1Click users
  • Web mail interface access
  • One-click account activation
  • Free tier up to 25 MB storage
Features
Read full description

Mail1Click is a free a secure mail service that uses strong encryption to keep your communications safe. It uses asymmetric encryption by Rsa keys long 4096 bit sending emails, it signs and encrypts the email automatically. You can send encrypted message to any normal email address, you can receive encrypted email from any Mail1Click users and you can receive email from any normal email address. All emails with files attached are stored fully encrypted by AES 256. You can access your encrypted mailbox using your device or by the web mail interface available at: https://www.mail1click.com Mail1click is very easy to use, you can activate your account in only one click and it's completely free up to 25 MB of space used. You can increase the usable space to 10 gigabytes for a monthly fee of 2.99$, using the in-app purchase option. The subscription may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Payment will be charged to your iTunes account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at lease 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours priors the end of the current period, and identify the cost of the renewal. No cancellation of the current subscription is allowed during the active subscription period. Term of use: https://www.mail1click.com/mail1click_terms_of_use.php Privacy Policy: https://www.mail1click.com/mail1click_privacy_policy.php

About

FlowCrypt

Easily encrypt your emails and attachments with PGP for enhanced privacy on Gmail. This app simplifies end-to-end encryption, making it accessible even without technical knowledge of cryptography. Secure your communications and files effortlessly.

Highlights
  • End-to-end PGP email encryption
  • Secure attachment encryption
  • Key generation and secure storage
  • Encrypted drafts
  • Password-protected encrypted messages
  • Compatibility with OpenPGP standards
Features
Read full description

Simple end-to-end encryption to secure email and attachments on Gmail. - Sets up in a few taps - Lets you use PGP encryption by generating a private and public key directly on your iPhone or iPad - Your keys are stored securely in iOS Keychain - You can choose to save your key passphrase on device or enter it as needed - Drafts are encrypted before saving to Gmail - Send messages encrypted with password to users who don't have PGP There are a few ways this encryption app stands out: - Easy email encryption that just works. - Anyone can use it. We've worked to ensure every single way possible that email encryption can be confusing has been removed, so that more people can encrypt Gmail. - You can send encrypted attachments. Text files, powerpoint slides, excel documents, image files, any and all files and attachments can be sent privately. - No understanding of cryptography needed. Don’t know what a public key is? You don’t need to know to secure your email with FlowCrypt. Power users with an existing public key are also served. Whether you have struggled with other ways to encrypt email or you are trying email encryption for the first time, you will find this a very simple secure email solution thanks to PGP. PGP stands for Pretty Good Privacy it's the standard for secure email encryption. This Gmail end-to-end encryption app lets you encrypt Gmail messages anytime your email security and privacy matters, without having to think about it. Most email providers don't give you the level of privacy that we should expect. That is why we created the FlowCrypt app that lets you encrypt google email without needing to learn anything new. Email PGP encryption has been historically a very difficult area, which few people used because there was no easy PGP solution around. If you were asked for a Public Key or a PubKey so that others can encrypt messages for you, just install FlowCrypt and you will find your new Public Key in the settings. Also, file encryption is fully supported. To encrypt an attachment just open a compose screen, add the recipient's email, and attach a file. If they have encryption set up on their end, that's it - just send the encrypted email out. PGP or the OpenPGP is a standard for encrypted communication used by more than 10 million people. FlowCrypt is compatible with most OpenPGP software out there. Looking forward to your feedback! Email us at human@flowcrypt.com as we're improving the app every day. Website: https://flowcrypt.com/ Source code: https://github.com/FlowCrypt/ Documentation: https://flowcrypt.com/docs/

Screenshots

Mail1Click4 screens
FlowCrypt2 screens

Verdict

The call

The clearest difference is rating: Mail1Click at 5.0 against FlowCrypt's 4.0. Mail1Click also leads on update cadence (every 6 weeks vs every 4 months) and iOS requirement (6.0 vs 15.0). FlowCrypt's advantage is in-app purchases (none vs 1) and ratings volume (3 vs 1). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mail1Click sells 1 in-app purchase, starting at $2.99 per month. FlowCrypt asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Mail1Click holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

UpkeepUpdate frequency

Mail1Click ships an update every 6 weeks, FlowCrypt every 4 months. The most recent releases landed on October 1, 2026 and September 30, 2026 respectively.

Scorecard6 real differences · 4 level
Mail1Click versus FlowCrypt: the parameters behind the verdict, then further details
ParameterMail1ClickFlowCrypt
PriceFreeFree
Rating5.0 (1 ratings) — better4.0 (3 ratings)
Positive reviews—50.0% of reviews
Number of ratings13 — better
Update frequencyEvery 6 weeks — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS6.0 — better15.0
Further details — not scored
Size10 MB28 MB
Age rating4+4+
DeveloperKryptotel fz llcFlowCrypt a. s.

Customer experience

Mail1Click

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

FlowCrypt

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

1 purchases

Mail1Click

Subscriptions1
  • Premium Subscription 10 Gigabytes 1 Month$2.991 Month
None

FlowCrypt

No in-app purchases

Questions

Is Mail1Click free?
Mail1Click is free to download, with in-app purchases available.
Is FlowCrypt free?
FlowCrypt is free to download, with no in-app purchases.
Which has better reviews, Mail1Click or FlowCrypt?
Mail1Click is rated higher. Mail1Click averages 5.0 out of 5 from 1 ratings, while FlowCrypt averages 4.0 from 3 ratings.
Do Mail1Click or FlowCrypt have ads?
Neither Mail1Click nor FlowCrypt shows ads.
Which is updated more often, Mail1Click or FlowCrypt?
Mail1Click ships an update every 6 weeks, and FlowCrypt every 4 months. Most recently, Mail1Click was updated on October 1, 2026 and FlowCrypt on September 30, 2026.

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