How do I permanently block a sender in Gmail?

Last reviewed: September 23, 2026 · Markdown version

Blocking sends that sender's future mail to Spam — it does not delete what they have already sent, and it does not take you off their list. Google's block page puts the effect in one sentence: "After you block a sender, all future emails from them go to Spam" (Block an email address in Gmail, read 23 September 2026). Its spam page adds that the block sticks: "When you block a sender, even when you remove their emails from Spam, Gmail still automatically identifies their emails as spam" (Report spam in Gmail, read 23 September 2026).

What blocking does and does not do

Does: route future messages from that address to Spam until you unblock it — Google's page puts the unblock list under Settings, in Filters and Blocked Addresses.
Does not: touch the mail already in your account, or the storage it occupies. Google's page talks only about future emails. Clearing the backlog is a separate job — clearing one sender's history.
Does not: unsubscribe you. For a list you joined, Google's advice is different: "If you signed up to receive messages from a specific sender and no longer want them, click Unsubscribe or Go to website."

The limit to know: blocking is per address

Google's page is written around blocking an email address, and it does not say a block extends to any other address. A company can mail you from several — news@, offers@, a noreply@ — and each one is a different address. If mail keeps arriving after a block, look at which address it came from.

Unsubscribing is not a whole-company switch either. Google's unsubscribe page warns: "When you unsubscribe from a specific email, it might only unsubscribe you from a single mailing list from the sender," and points to Manage subscriptions to find the rest (Unsubscribe from an email, read 23 September 2026). A filter built from a search that matches every address the sender uses is the other way to cover them all.

Block, filter, or unsubscribe — choosing quickly

Unsubscribe when you once signed up and the sender is real.
Block when a specific address should never reach your inbox again.
Filter to Trash when the mail is harmless but endless — "delete" is one of the actions Google lists for a filter (Create rules to filter your emails, read 23 September 2026).
Report as spam for mail you never asked for. Google says that "As you report more spam, Gmail identifies similar emails as spam more efficiently" — which is why, for a sender you did sign up to, its own tip points to Unsubscribe instead.

Where we fit

The filter option is the one that is slow to set up by hand, and it is the one that scales. Adinand Email Cleaner groups your Gmail by sender, so you can see who actually keeps arriving, clear their backlog in a few taps, and set an auto-trash rule so future mail from them never reaches the inbox again — three rules on the free tier, unlimited on Pro. It reads only email headers, on your device, and it shows the measured space each cleanup gives back.