Question Stupid question but does email masking increase risk of leaked email contents?

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Because of it forwarding to your actual email account does it make the emails more vulnerable when it comes to leaks etc. Say you use simplelogin or proton etc does it make emails less secure than your actual email? Are they easier to be breached compared to a standard gmail/outlook etc?
What do you mean by more vulnerable? E-Mail masking is made for privacy, so that you can't be connected to your real email. If you have to register on a site that you don't fully trust, they only see the fake email adress that is used to forward the confirmation link to your real mail adress. Other than that I don't really see an other relevant use case for such services.
 
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Using email masking services like SimpleLogin or Proton doesn’t significantly increase the risk of your email contents being leaked, but it does add an extra service that processes your emails, which means one more point you need to trust. In practice, reputable providers use strong security and encryption, so the added risk is small.

If you use something like Proton’s own aliases, your emails can remain end-to-end encrypted, which is very secure. If you use a forwarding service like SimpleLogin to a provider such as Gmail or Outlook, the email is processed and forwarded, so both services could technically access the content, making it slightly less private but not dramatically less secure.

Overall, email masking is usually a net benefit because it protects your real email address, limits damage from breaches, and reduces spam. The biggest security risks still come from things like weak passwords or phishing, not from the masking itself.
 
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Using email masking services like SimpleLogin or Proton doesn’t significantly increase the risk of your email contents being leaked, but it does add an extra service that processes your emails, which means one more point you need to trust. In practice, reputable providers use strong security and encryption, so the added risk is small.

If you use something like Proton’s own aliases, your emails can remain end-to-end encrypted, which is very secure. If you use a forwarding service like SimpleLogin to a provider such as Gmail or Outlook, the email is processed and forwarded, so both services could technically access the content, making it slightly less private but not dramatically less secure.

Overall, email masking is usually a net benefit because it protects your real email address, limits damage from breaches, and reduces spam. The biggest security risks still come from things like weak passwords or phishing, not from the masking itself.
You are right about everything you said. So as most people use something like gmail as their main email provider, using Proton's aliases is a no-brainer. It's more secure and also a more private. What other use cases are there that you can think of, other than registering on a sketchy site with your email alias? I mean even if the service was less secure, the mail contents wouldn't really be sensitive.
 
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What do you mean by more vulnerable? E-Mail masking is made for privacy, so that you can't be connected to your real email. If you have to register on a site that you don't fully trust, they only see the fake email adress that is used to forward the confirmation link to your real mail adress. Other than that I don't really see an other relevant use case for such services.
I meant the contents of the email. Say it was order details or personal email if clicking mask accidentally via an app etc. I've never used masking and wanted to know if there was added risk using the services vs standard email with an email account
 
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I meant the contents of the email. Say it was order details or personal email if clicking mask accidentally via an app etc. I've never used masking and wanted to know if there was added risk using the services vs standard email with an email account
I think @RoboMan explained it pretty well. It's hard to say if you are less secure or not as you can never know what the masking service is doing with the mail. So you have a middle man who can theoretically see your mail's content. It's basically the same problem as with VPNs. You shift your trust to another party. In the end it is for you to decide wether you trust the masking service or not. If you are using Proton's masking service, you shouldn't worry too much in my opinion. It is still one of the most reputable, secure and private email providers out there. If you still are sceptical you should look for services that use PGP encryption.

 
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I have more or less been using email forwarders/aliases forever, and leaking my emails isn't a problem from my side. A typical issue is sending emails using that alias as the sending address and whether the forwarder/alias forwards emails in a timely manner (especially in the case of OTPs).

A good question to consider is whether you trust the forwarder to have good security, solid privacy policies, and to adhere to those policies.
 
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It depends on which service you select. Proton and SimpleLogin are both open-source and end-to-end encrypted, and they are well-known privacy products (actually, if I recall correctly, they are related to the same company). As other members have pointed out, the primary function of these services is to conceal your actual email address so that you won't receive spam or for any other reason you choose.

If you only need an email address for a single use, I advise using disposable email rather than aliasing; for instance, I use TemporaryMail.
 
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Thanks to the previous answers, especially RoboMan’s, it’s quite clear that email masking does not add risks to the content of emails. Aliases work more like a shield for our identity, and the key lies in trusting the provider we choose. In the end, masking is not a security problem but a privacy strategy: it doesn’t change the protection of the message itself, but it does give us more control over our address and how we use it. 🛡️🔑📧
 
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Using a reputable email masking service does not significantly increase the risk of your email contents being leaked, although it does introduce a "middleman" that temporarily processes your messages. While this setup requires trusting the forwarding provider, much like trusting a VPN with your web traffic, top services mitigate this risk by utilizing strict privacy policies and strong end-to-end encryption. Ultimately, the benefits of hiding your real address, limiting the fallout from data breaches, and reducing spam far outweigh the theoretical risks of the masking service itself. As long as you choose a trusted provider and maintain strong passwords, email masking remains a highly secure and recommended protective measure for your digital privacy.
 
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