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Proton Drive レビュー 

21
TrustScore 5段階評価の2.5

2.6

レビューはレビュアーの個人的な意見であるため、特定の記載内容を検証することはありません。ただし、ビジネス上の取引が行われたことを確認できた場合、レビューに「確認済み」のラベルを付ける場合があります。詳細はこちら

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レビュアーのコメントを見てみましょう

5つ星のうち1の評価

L'IA di Google mi ha consigliato di passare a Proton, per tutelare la mia sicurezza, da potenziali attacchi hacker, immissioni nel mio pc per danni di varia natura. Faccio l'iscrizione a Proton ema... もっと見る

5つ星のうち5の評価

Sehr gute und sichere Cloud-Alternative zu Google und Apple. Ich bin froh, endlich eine geeignete Cloud mit Ende-zu-Ende-Verschlüsselung für meine sensiblen und wichtigen Dateien gefunden zu haben. Sc... もっと見る

企業が回答しました

5つ星のうち3の評価

Als Windows Benutzer ist Proton Drive eine tolle Alternative für Google Drive. Wer allerdings Linux und Android benutzt, wird zumindest bis Ende 2026 keinen Spaß haben. Der Linux Client erschei... もっと見る

企業が回答しました

5つ星のうち2の評価

Proton Drive does not have a built-in automated rule or native setting to scan for and delete duplicate files while keeping the newest one. I must manage duplicates manually. This is a product killer... もっと見る

企業が回答しました

企業情報

Proton Drive について

当該企業による記述

Proton Drive’s end-to-end encrypted cloud storage ensures no one but you and the people you choose can access your files. Not even Proton.

Brought to you by the makers of Proton Mail.

連絡先

2.6

期待以下

TrustScore 5段階評価の2.5

21件のレビュー

5つ星
4つ星
3つ星
2つ星
1つ星

最近のレビュー依頼の記録はありません

この企業は最近、顧客にレビューを依頼していないため、レビューが全体の意見を反映していない可能性があります。

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2.6

すべてのレビュー

(21)

過去12か月のレビュー数: 21

レビューを書く
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5つ星のうち1の評価

L'IA di Google mi ha consigliato di…

L'IA di Google mi ha consigliato di passare a Proton, per tutelare la mia sicurezza, da potenziali attacchi hacker, immissioni nel mio pc per danni di varia natura.
Faccio l'iscrizione a Proton email e a drive.
Passo una serie di dati di una delicatezza inaudita e restano bloccati per sempre lì dentro. Dal supporto mi dicono che sembro essere io il malintenzionato, e liquidano chiudendo il caso, bruciando mesi di lavoro e facendo un danno di cui non posso relazionare qui. Ho segnalato l'increscioso empasse diplomatico anche alla Polizia Svizzera.
Vorrei riavere il mio account e i miei dati lì conservati, in quanto sono la vera proprietaria di tutto, materiale itellettuale compreso.

2026年9月7日
自発的なレビュー
5つ星のうち1の評価

Excellent privacy, but Drive and Mail reliability need improvement

Certo — ecco la versione con **Proton Drive prima** e **Proton Mail alla fine**.

I chose Proton Unlimited mainly because Proton is one of the very few providers whose technical architecture appears to genuinely implement the level of security and privacy it publicly claims to provide. From that point of view, I still consider Proton one of the strongest services available.

Unfortunately, my experience with Proton Drive and Proton Mail has not been equally positive in terms of reliability and synchronization.

Proton Drive was the most concerning part for me.

Normal synchronization was reasonably fast, but making files available offline could become extremely slow, sometimes around one file every 30 seconds for ordinary photos and documents.

I also observed situations where the application reported that synchronization was complete while files still appeared to be waiting for upload or download. In some cases, newly created files did not appear online as expected.

This is particularly problematic because a synchronization application should give the user a reliable indication of whether all data has actually been uploaded and synchronized. If the application reports that everything is synchronized while some files are still pending, it becomes difficult to trust the displayed status without manually checking the remote storage.

I understand that end-to-end encryption requires additional processing, and I appreciate Proton's security model. However, my archive contains thousands of files, so performance and, above all, reliability at scale are essential.

I need to be able to trust the synchronization state without continuously checking whether every file has actually been transferred correctly.

I eventually decided to cancel Proton Unlimited and migrate my files back to Dropbox. I am now restoring recent backups and comparing folders to make sure nothing has been lost or missed during synchronization. This is a substantial amount of additional work, and I am obviously not happy about having to do it.

Another disappointing aspect is Proton's refund policy. Once the standard refund period has expired, cancelling or discontinuing a Proton Unlimited subscription does not automatically result in a refund for the unused portion of the plan, even when the decision to stop using the service is related to technical or reliability issues.

In my case, I asked Proton to reconsider the refund because of the problems described above, but I was initially informed that I was not eligible under the standard refund policy.

I also encountered several issues with Proton Mail.

The folder hierarchy is too limited for my needs, especially when migrating and managing a large existing mailbox.

I experienced inconsistencies between the mailbox structure shown on mobile, on the web interface, and in Thunderbird through Proton Mail Bridge.

During migration from my old Gmail account, several messages ended up in a recovery folder and generated errors.

After resetting Proton Mail Bridge, some messages disappeared from the local folder structure, leaving me uncertain whether they were lost, still present on Proton’s servers, inaccessible from the client, or only available in the original Gmail account.

Proton Mail Bridge synchronization was also quite slow.

My mailbox contains thousands of emails accumulated over many years, so preserving the structure and being able to verify that everything has been migrated correctly is very important to me.

This is a real pity because Proton’s privacy and security model is one of the best reasons to choose the service. In my experience, however, Proton Drive synchronization, the desktop applications, and Proton Mail Bridge are not yet at the same level as the underlying security architecture.

I hope Proton continues improving these areas, because if reliability and synchronization become as strong as the privacy model, the suite could be outstanding.

20260907 : ticket 5127571

2026年8月31日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

We're sorry to hear you feel this way. Could you share your ticket number with us here, so we can track your case?

5つ星のうち5の評価

Cloud mit Ende-zu-Ende-Verschlüsselung

Sehr gute und sichere Cloud-Alternative zu Google und Apple. Ich bin froh, endlich eine geeignete Cloud mit Ende-zu-Ende-Verschlüsselung für meine sensiblen und wichtigen Dateien gefunden zu haben. Schade, dass es das Drive-Lite Abo für 0,99 € nicht mehr gibt. Ansonsten: Weiter so!

2026年8月19日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for you positive feedback and 5-star review!

5つ星のうち2の評価

Proton Drive does not have a built-in…

Proton Drive does not have a built-in automated rule or native setting to scan for and delete duplicate files while keeping the newest one. I must manage duplicates manually. This is a product killer for me and I will dump it.

2026年7月25日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for sharing your feedback with us! Could you clarify which Proton Drive platform you're using?

5つ星のうち3の評価

Sicheres Cloud-Drive mit großen Schwächen

Als Windows Benutzer ist Proton Drive eine tolle Alternative für Google Drive.

Wer allerdings Linux und Android benutzt, wird zumindest bis Ende 2026 keinen Spaß haben. Der Linux Client erscheint nämlich dann erst.

Unter Android kann man aktuell keine Dateien direkt öffnen. Man kann sie lediglich herunterladen, bearbeiten und dann wieder hochladen. Ich hoffe das dieser Zustand bald besser wird und mit der aktuellen Konkurrenz gleichzieht.

Da ist noch viel Arbeit und den Dienst brauchbar zu machen.

2026年7月22日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for your review! Your feedback has been noted, and we appreciate you sharing the areas where you feel Proton Drive can improve. Comments like yours help us prioritize future enhancements as we continue to develop the service.

5つ星のうち1の評価

Used to be good

Used to be good, it's just keeps getting worse of late. Totally unusable, file conflicts all over the place, takes ages to upload and download files. Don't waste your time

2026年7月12日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Which Proton Drive platform are you using? Share more details on this in a support request at: https://proton.me/support/contact so we can assist you with troubleshooting.

5つ星のうち1の評価

Corrupted many of my files

Corrupted many of my files, a pain in the ass to uninstall because It forces you not to, and never use the sync if you don’t want half of your files becoming corrupted/deleted

2026年7月3日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

That doesn't sound right at all. Contact us in a support request (https://proton.me/support/contact) so we can assist you accordingly.

5つ星のうち1の評価

Just doesn't work - worse than worthless

UPDATE: I don't understand why you think I would give you an opportunity to investigate when you fail at the first hurdle, the only rational thing to do if the first interaction with a platform that's primary function is security and stability fails on one of those accounts is to not move forward - I'm not here to Beta-test or debug your platform for you, I'm the only that's going to be paying for the platform, I don't intend to provide free QA for you.

Oh, and where is my refund given I cancelled within the cooling off period - that wasn't even mentioned in the cancellation process - so can you not be trusted as well?

_ _ _ _ _ _ _ _

Joined, paid, tried to upload, had to select some folders to upload a number of times, Proton Drive finally froze.

Deleted everything that had uploaded, cancelled account, going back to Dropbox - even if Dropbox's security is less, it's better to have worse security and at least know for sure your files will be there when you want them, 100% security on files Proton Drive doesn't upload or loses is worse than worthless.

2026年6月24日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

We're sorry to hear about your experience. Based on the information provided, it's unclear what caused the upload issue, and we were not given an opportunity to investigate it before the account was canceled.

Proton Drive does not delete or lose files that have been successfully uploaded and synced. If you encounter a specific issue in the future, we encourage you to contact our support team so we can review the logs and determine the cause.

5つ星のうち1の評価

Eigentlich unbrauchbar

Eigentlich unbrauchbar. Habe 50.000 Fotos. Die Synchronisation dauert Wochen. Habe schon alles versucht: Cache geleert, Neustart, Neuinstallation, Support. Nichts hilft. Außerdem sind die Apps halb in Deutsch und Englisch. Der Client für Proton Drive für MacOS ist ein Witz. Das beste an Proton ist bisher das VPN und Proton Pass.

2026年6月22日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for your feedback. Syncing a library of 50,000 photos can take a significant amount of time, particularly during the initial upload when all files need to be encrypted and transferred. Regarding the mixed German and English interface, please report the affected screens to our support team so we can investigate and improve the localization experience.

5つ星のうち3の評価

Interfaccia intuitiva e buon ecosistema ma la velocità di upload/download è bassa

Proton Drive si distingue nettamente nel panorama del cloud storage per la sua crittografia end-to-end zero-knowledge e la giurisdizione svizzera, che garantiscono una privacy pressoché assoluta: nemmeno Proton può accedere ai tuoi file. L’interfaccia è pulita e intuitiva, l’integrazione con l’ecosistema Proton (Mail, VPN, Calendar) è fluida, e funzionalità come link protetti da password, date di scadenza e permessi personalizzati lo rendono uno strumento solido per la condivisione sicura. Il piano gratuito offre 5 GB, con app disponibili per Web, Windows, macOS, iOS e Android (io ho il piano da 500 Gb, a pagamento). Tuttavia, il servizio mostra limiti evidenti: le velocità di upload e download risultano inferiori rispetto ai concorrenti, poiché ogni file viene cifrato individualmente in blocchi da 4 MB. Adesso è possibile modificare documenti di testo e fogli di calcolo direttamente nel browser o nell’app ma ho l'impressione che la collaborazione in tempo reale sia ancora acerba. La ricerca interna a volte pare affidabile e l’app Android e Windows risultano incompleta rispetto alle controparti desktop. In sintesi, Proton Drive è la scelta ideale per chi mette la privacy al primo posto, ma chi cerca produttività collaborativa quotidiana troverà ancora qualche compromesso da accettare.

2026年6月14日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for the thoughtful and balanced review. We also appreciate your feedback regarding transfer speeds, search reliability, collaboration capabilities, and app parity across platforms. Building a privacy-first cloud service involves technical tradeoffs, but improving performance and expanding productivity features remain active areas of development.

Feedback like yours helps us prioritize improvements while staying true to our commitment to privacy and security. Thank you for your support and for choosing Proton Drive.

5つ星のうち1の評価

Have SYNC ISSUES ALMOST EVERY DAY

Have SYNC ISSUES ALMOST EVERY DAY! You leave one laptop showing the file synced. You open another the file is deleted have to retrieve it from delete folder online.

2026年6月11日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

That doesn't sound right at all. Contact us in a support request so we can look into you report.

5つ星のうち5の評価

Had no problems installing the drive…

Had no problems installing the drive app on MacOS, iOS or Android.

Everything seems reliable - no issues with uploading or downloading items.

I prefer its privacy compared to Apple Cloud which likes to upload everything from your computer to their cloud unless you fight hard to stop it.

I had to contact their support about the iOS app and they replied quickly with a detailed reply. At the moment the Proton Drive app doesn't integrate with the iOS files app. But they told me they are working on this and the new app is in beta.

Overall very happy

2026年5月21日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for sharing your experience! We're delighted to hear that the setup process went smoothly.

5つ星のうち3の評価

Has no selection for ONLY NEW PHOTOS

Searching for a european alternative to Dropbox, Drive etc. and already having a proton email account I gave the Proton Drive a go. Important for me is the auto photo back up of my android phone. Well it [the app on my phone] works but unfortunately it has no selection for 'only new photos' which means that it uploads ALL the content of the selected directories which can take days [because of the encryption] after which one must delete all the excess once it's finished [5Gb free acount]. As I have multiple folders with photos taken and received from various sources this would mean a really time consuming process. I use dropbox, which does have this feature [OK I only needed it starting out, but still], as my safety upload 'on the road' so I can back up to my own system at home. I had hoped to switch to Proton for this but it's simply too involved, and means a great deal of wasted resources and energy.

2026年5月1日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

We appreciate you giving Proton Drive a try and sharing your experience regarding the initial upload process. Feedback like yours helps us better understand where we can improve the user experience, and we’ve passed your comments along to the team for consideration in future updates.

5つ星のうち1の評価

I gave up after a whole day of trying…

I gave up after a whole day of trying to install it on various new laptops. The most unuser friendly program that I just paid for.

2026年5月14日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

We are sorry to hear about your experience. Have you reached out to us in a support request? If you haven't, please do ( https://proton.me/support/contact ) so we can help.

5つ星のうち4の評価

Proton is great but it needs a Linux…

Proton is great but it needs a Linux desktop app. I will give it 5* when that happens.

2026年5月14日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

We are working on it: https://proton.me/blog/2026-spring-summer-roadmaps. Thank you for your 4-star review!

5つ星のうち1の評価

Promising but not at all good

Promising but not at all good

I wanted to have an European alterative to onedrive, dropbox and more.

After researching my analysis came out with proton drive as the option. I copied from dropbox. It looked fantastic. During moving the files I was even offered by proton to get extra free storage, above the 5GB which are for free. Hallelulja. I did. I moved everything. I was very exited.

Some time after I realized the storage was back to 5GB and I could not sync with my phone ???? And it got much worse when I tried to get the files over on my new computer !!

I tried to write Protons help desk, without a result :/ I contacted proton and got a automated reply from “support+idEE0L19XG2V4(at)protondrive.zendesk.com” basically saying there was no time for replying as you where very busy.

I have now sadly removed my files back to dropbox. Hoping to find an alternative soon.

This for both private and the organisations and companies I am involved with.

Proton replies that 5GB is max, this is not the message I got when so uploaded. How else would I be able to upload more than 5GB?

My review stays the same.

2026年1月6日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

All Drive accounts start with 2 GB by default and can get additional 3 GB by completing a few simple actions as indicated in the email you receive when you create your account: https://proton.me/support/more-storage-proton-drive. You cannot get more than 5 GB of storage with a free account.

How exactly did you try to reach out to us? We'll be looking forward to your updated review

5つ星のうち3の評価

Great for file storage, Awful for document editing.

Great for file storage. Terrible for documents.
You can not use word documents.

Their own document version is so irritating. By default when you click enter to go the the next line it leaves a big gap. You can hold shift and enter. But I write a lot of addresses. This is just a massive unnecessary inconvenience.

For a company that has pioneered so many areas, I can’t believe they have overlooked something so basic. Yet so irritating I’ve moved over to using standard notes solely for this reason.

And when it comes to Proton Pass. Don’t get me started on that. One of the worst features that actually caused me several days of problems to fix and recover lost data was not having an auto save feature when writing notes.

Yes, you can say it’s my responsibility to click save. But when you are busy it is too easy to accidentally click out when finished and forgotten to click save. Almost all apps I’ve used have auto save. It’s almost assumed.

Another really small thing that would likely be so easy to fix is enough to make me want to use Standard Notes to ensure this never happens.

It’s also slower that standard notes to sync across

But it’s a shame because Proton as a whole has so many good features. From VPN, email, file storage, and more. They could have the whole package. But due to a few really minor things make it too annoying to use. Although I do still use it for secure file storage.

But anything where I have to write out text or use documents then I won’t use Proton.

PLEASE PROTON… ADD AN AUTOSAVE FEATURE TO DOCUMENTS EDITING. AND STOP MAKING THAT STUPID BIG GAP BETWEEN LINES THE DEFAULT. OR MAKE IT EASIER TO CHOOSE WHICH FORMAT YOU WANT.

2026年4月5日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for your review! We've passed your interest in supporting custom spacing between lines along to the team.

Feel free to share your suggestion regarding Proton Pass with us at the dedicated UserVoice page: https://protonmail.uservoice.com/forums/953584-proton-pass. This helps the Pass team better understand what matter most to the community and guides their development priorities.

5つ星のうち5の評価

I was searching for European…

I was searching for European alternatives for OneDrive en Google Drive. I tried some, but Proton Drive is for me the best one. It is not perfect, sometimes a bit laggy but maybe it was my phone with a hickup.

2026年1月12日
自発的なレビュー
Proton Drive ロゴ

Proton Drive からの回答

Thank you for your 5-star review and positive feedback! If you ever need our assistance, feel free to contact us via the in-app 'Report a bug' option.

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