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Processing rules

Your own logic
for mail filtering

Build rules for any scenario: forwarding invoices, blocking dangerous attachments, tagging ads — AND/OR conditions and any action you need.

Rule builder

Conditions and actions
in any combination

Every rule consists of conditions (what to check) and actions (what to do). Conditions are combined with AND or OR logic. Rules are applied in order.

  1. 1
    Set the conditions
    By sender, recipient, subject, content, attachment type, IP, or header. Use exact match, wildcard, or regex.
  2. 2
    Choose the logic
    AND — every condition must match. OR — one is enough. Combine them for precise filtering.
  3. 3
    Assign an action
    Forward, tag, block, reject with a message, or add a header — the message is handled automatically.
Processing rules
🚫
Block EXE attachments
Attachment ends in .exe → Reject
📤
Forward invoices
From: accounting* → Forward to fin@company.com
🏷️
Tag advertising
Subject contains "discount" → Add tag [ADV]
📋
Forward to HR
Subject contains "resume" → CC to hr@company.com
Conditions and actions

What you can check
and what you can do with an email

Check conditions
✉️
Sender
From address or domain — exact, wildcard, or regex
📬
Recipient
RCPT TO address or domain
📝
Subject line
Contains, starts with, regex
📄
Content
Search inside the message body, encodings are handled
📎
Attachment
File type, name, extension
🌐
IP address
IP or CIDR range of the sending server
📋
Header
Any SMTP header, arbitrary name and value
Actions
📤
Forward
Send the message to a different address instead of the recipient
📋
Copy
Add a copy to an additional address
🏷️
Tag in subject
Add a prefix or suffix to the message subject
🚫
Block
Place the message in quarantine
Reject
Return an SMTP error to the sender with your own text
📋
Add header
Insert an arbitrary X-header into the message
⏭️
Continue processing
Don't stop — keep checking the remaining rules
Examples

Common scenarios

🔒
Protection from dangerous attachments
Attachment ends in .exe, .bat, .js
→ Reject with the message "File type not allowed"
💰
Forwarding financial emails
Subject contains "invoice", "Invoice", or "billing"
→ Copy to fin@company.com
🎯
Internal domain filter
Sender is not an employee but sends as @company.com
→ Reject (protection against domain spoofing)
📰
Tagging promotional email
Subject contains "promo", "discount", "%", or "sale"
→ Add tag [ADV] to subject
🧑‍💼
Resume routing
Subject contains "resume" or "CV"
→ Forward to hr@company.com
🌍
Blocking by geolocation
Sender's IP address falls within an unwanted region's range
→ Reject

Automate the handling of any email

Rules are built without any programming.

Get started