maskwire
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A toolbox for the email
you already use.
Maskwire is an IMAP/SMTP proxy between your mail app and your provider. Enable tools for alias replies, sender rewriting, text redaction, and more.
One tool free. All tools for $3/month.
Your mail app
Keep the client you use
Example tools. You choose what runs.
Your email provider
Your mailbox stays here
Connected over IMAP and SMTP. Tools run as mail passes through.
No bullshit, tell me what Maskwire does.
You point your mail app at Maskwire. Maskwire connects to your upstream email server and applies the tools you enable as messages and commands pass through. Your mailbox stays with your provider.
Your upstream login details are encrypted with your public key. The private key is locked with your Maskwire password. When your mail app logs into an IMAP or SMTP session, that password unlocks the credentials so Maskwire can connect on your behalf. Stored credentials alone cannot unlock your mailbox.
Maskwire can process email during that session. This protects stored credentials; it is not end-to-end encryption of email content.
THE TOOLBOX
Choose what your email does.
Enable the utilities you need.
Each one has a specific job.
OUTGOING MAIL
Alias replies
Reply to mail sent to a configured alias. Maskwire rewrites the outgoing sender to that alias.
Applied after sending. See the guide for recipient and configuration requirements. Read the guide ↗
OUTGOING MAIL
Sender rewriting
Map a sending address to another address, with date patterns for addresses you want to rotate.
An illustrative date-based rule. Your upstream provider must allow the sending address. Read the guide ↗
OUTGOING MAIL
Text redaction
Define sensitive text patterns. Maskwire redacts matching content before the message is sent.
Internal reference: PROJECT-42Internal reference: [redacted]Illustrative redaction. You configure the patterns; this does not automatically detect all sensitive information.
CLIENT ACTIONS
Delete protection
Redirect supported delete operations to an archive destination you configure.
Move message to TrashMove message to ArchiveConfigure the destination for your mailbox. This tool is not a backup.
MESSAGE HEADERS
Unsubscribe rewriting
Rewrite List-Unsubscribe mail links to preserve the sender context for your aliases.
Unsubscribe by emailAlias sender context includedApplies to supported List-Unsubscribe links.
INCOMING MAIL
Message age limits
Limit the age of messages shown to your client, with rules for selected mailboxes.
Recent and older messagesMessages within your cutoffOlder messages remain with your provider.
HOW TO CONNECT
A new route to your existing mailbox.
Connect your provider
Add your upstream IMAP and SMTP connection details to Maskwire.
Choose your tools
Enable the utilities you want and configure their rules in your toolbox.
Point your client here
Update your mail app's server settings to connect through Maskwire.
Check your setup first. You need a client with configurable IMAP/SMTP servers and a compatible upstream provider. Sender rewrites also depend on which addresses your provider allows.
Processing happens in transit. Maskwire processes mail during active connections. Read how credentials and sessions work before connecting your account. Explore the guides ↗
Start free. Get the whole toolbox for $3.
Keep one tool free for as long as you need it.
Free
$0/ month
For the one thing you want your email to do.
- One tool of your choice
- Configure its rules for your mailbox
- No time limit
All tools
$3/ month
Use the whole toolbox together.
- Enable all available tools
- Combine the utilities you need
- Configure rules for each tool
Prices in USD. Questions? Get in touch.