Go to the Sender Rules page and select the Blocked Senders tab. This tab lists every blocking rule on your account and lets you add new ones.
What a blocked sender rule does
When a rule matches an incoming email's sender address, that email is dropped before forwarding. The sender gets a delivery failure. Nothing reaches your inbox.
Rules apply across all your aliases — blocking spam@example.com stops that sender from reaching any alias on your account, not just one specific alias.
The three block types
Exact Email — blocks one specific address. Use this for a specific sender you want to stop.
Example: promo@retailer.com
Entire Domain — blocks every address from a given domain. Useful when a whole domain is sending junk and you don't want anything from them.
Example: entering spammer.com blocks anyone@spammer.com, noreply@spammer.com, and so on.
You can also check the Include subdomains option to block all subdomains of this domain as well (e.g. anyone@sub.spammer.com). If not checked, only the root domain is blocked.
Pattern (wildcard) — blocks addresses matching a pattern. Use * to match any number of characters, ? to match a single character.
Examples:
newsletter-*@example.comblocks any address starting withnewsletter-from that domain*@*.rublocks all addresses from any.rudomain
Adding a rule
Click Add Blocked Sender. Choose the block type, enter the address, domain, or pattern, and optionally add a reason so you remember why you added it later. Click Add Rule to save.
Toggling a rule on and off
Each rule you've added has a toggle. When it's off the rule is paused — emails from that sender pass through again — but the rule stays on your list so you can re-enable it any time.
This is useful if you temporarily want to allow a sender back without permanently deleting the rule.
Deleting a rule
Click the trash/menu icon on a rule and confirm delete. The rule is gone immediately and the sender can reach your aliases again.
Searching your rules
The search bar filters your rules by address or pattern. Useful if you have many entries and need to find a specific one.
The blocked count
Each rule shows how many emails it has stopped. Useful for knowing which rules are actually working hard and which ones have never fired.
Global rules
Some entries show a Global badge. These are rules maintained by AliasFleet that apply to all accounts — known spam infrastructure, malicious senders, and so on. You can see them in your list but can't edit or delete them.
Auto rules
Entries with an Auto badge were added automatically by AliasFleet when suspicious activity was detected on a sender. You can review, toggle, or delete these just like manual rules.
Adding from Analytics
From Analytics → Top Senders, you can click on a high-volume sender you want to block and be taken directly to the Sender Rules page with that address pre-filled. This is the fastest way to block a sender you identified through your stats.