1. Open Gmail in a desktop browser and expand the search options.
2. Enter a specific condition, such as a known sender plus a distinctive subject term.
3. Run the search first and inspect the results. Refine it if unrelated messages appear.
4. Choose Create filter and select the intended action. Applying a label is a useful low-impact starting point.
5. Review any option to apply the action to existing matching conversations before confirming.
6. Send or wait for a new representative message and verify the result.

A reply is only filtered when it matches the rule's conditions. Check existing rules under Settings > See all settings > Filters and Blocked Addresses when mail seems to skip the Inbox or arrive in an unexpected location.

A filter that forwards messages needs an authorised destination and the applicable organisation settings. Filter-based forwarding acts on new matching mail; it is not a historical mailbox migration. Never create a rule that sends business mail to an unapproved personal address.

You receive invoices from [email protected] and want to label them without hiding normal conversations with that supplier. Begin by testing the search condition:

from:[email protected] subject:invoice

1. Run the search in Gmail and inspect several results.
2. Use the search options to create a filter from the matching sender and subject conditions.
3. Choose the action to apply a label named Supplier invoices.
4. Review the option for applying it to existing conversations before saving.
5. Check a new invoice and a different supplier message that lacks the subject term.

Expected result: the invoice receives the label while the unrelated message does not. Keep the initial rule limited to labelling until you have confirmed that it selects the intended mail.

Edit or remove the rule, then search the affected locations to recover or relabel messages as needed. Removing a rule does not necessarily undo actions it already performed. If messages were deleted, review Trash promptly and follow the available recovery process.

Use descriptive labels and keep the rule set understandable to the mailbox owner. Exporting filters can help document a configuration, but review imported rules before activation because they can contain forwarding or deletion actions from another environment.

• Finding messages and attachments with Gmail search operators
• Reviewing Gmail forwarding and keeping an authorised copy
• Tracing a missing message with Google Email Log Search
• Setting a Gmail out-of-office reply for a business mailbox

• Gmail filter creation
• Gmail search operators

• Creating Gmail filters that organise messages safely