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    Private replies - stay protected even when replying

    Jun 28th, 2020

    Previously, when you replied to an email via Mailmask it would go directly back to the sender from your real email address. Thus senders would discover your real email address if you ever replied.

    This has now been changed. We have implemented "private replies".

    Now, when you receive an email through Mailmask you can now reply to it to send a reply back to the original sender, and your real email address will remain hidden. Thus you can now have a whole conversation with someone over email without them ever knowing your real email address! We call this feature Private replies on our pricing page.

    Best of all, private replies are available across all our pricing plans, including the Basic one. And there are no limits to the number of replies you can do.

    How it works

    Let's say your username is batman and that you receive an email from [email protected] via [email protected].

    Mailmask will forward the email to you real inbox and set the sender address to be of the form: <PREFIX>@reply.msk.sh. The <PREFIX> part will be a hexadecimal string that is an encrypted representation of the following items, all combined:

    • The sender address, i.e. [email protected]
    • Your username, i.e. batman
    • The alias, i.e. news

    When you reply to this email it will be received by Mailmask's mail server at <PREFIX>@reply.msk.sh. The <PREFIX> part will be decrypted to obtain the original information as shown above. This is how Mailmask figures out who to forward replies to - we never store this information on our servers.

    When we forward your reply to the original sender we again construct an address of the form: <PREFIX>@reply.msk.sh, which is again an encrypted representation of the information above. This is the address to which they will send their replies back to you.

    Turning it off and bandwidth

    Please note that replies (and replies back to your replies) count towards bandwidth usage. We've updated the dashboard to reflect this.

    If at any point in time your turn off an alias - e.g. you turn off news in the above example - you will no longer receive any emails or replies from the sender (or anybody else) via that alias. However, your own replies back to senders will still reach them and will still count towards bandwidth usage.

    Let us know how it goes!

    We hope you enjoy being able to reply privately. Please let us know if you have any issues! You can get in touch with us via the help & support page.

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