A few answers.
Then back to your inbox.

No. The browser interface does not require registration or a key. It creates a receive-only temporary address on request. An address is not an authenticated private account.

Use the full generated address, including dots or a plus suffix. Allow some time, then press Refresh. Delivery can be delayed or rejected, and some senders block disposable aliases. If appropriate, request a new message from the sender; do not repeatedly refresh or request codes in a loop.

An empty inbox is not proof that a sender delivered a message. KilgoreTM cannot guarantee acceptance by another website.

There is no guaranteed lifetime. Availability depends on external email infrastructure, and an address may stop working or be reused. Keep important accounts and recovery emails on a permanent, authenticated mailbox.

Possibly. There is no mailbox password, and knowing an address may be enough to retrieve its mail. Do not treat temporary mail as secret, unique to you, or suitable for sensitive information.

Read the Privacy policy and safe-use guidance before using it.

These are alias variations supported by the selected address domain. Gmail can use dots or a plus tag; Outlook and Hotmail use a plus tag. University addresses use plain names. Address options lets you choose variations supported by every selected alias domain.

Copy the complete returned address exactly; changing or removing a character can send you to the wrong inbox or an unsupported address.

No. KilgoreTM is receive-only. It cannot send mail, reply, forward messages, or manage a permanent mailbox.

Email requests share a limited service capacity. When a limit is reached, a cooldown pauses new requests. Wait for the displayed timer before trying again. Choosing another domain or opening more tabs does not guarantee more capacity.

Your browser can block clipboard access. If copying fails, KilgoreTM selects the address so you can use your device’s normal Copy action. Clipboard access generally requires HTTPS or a local development address.

It removes the selected address from the active storage mode and clears its displayed messages. In device mode the saved inbox is also removed from other device-mode tabs. It does not delete external mail, your clipboard, downloads or another website’s records.

Archive, Spam, Trash, read status, stars and importance are local organisation only. They do not move or delete external mail or report a sender. Undo reverses the last local change when its fields have not been edited again.

Use Storage to delete all saved device inboxes, or browser site-data controls to remove local caches and the service-worker registration. Open tabs can still hold session copies.

Use Open previous address to check an address you already know. If it is still available, you can open it again; an empty inbox is still a valid result. This is not account sign-in, proof of ownership or a guarantee that the address will remain available.

Addresses, inbox names and pins are stored in the tab when storage is available. You can opt in to remember them on this device under Storage. Session-only mode affects this tab and does not delete an existing device copy; Delete saved inboxes removes that copy. Use Open inbox to switch between addresses. Messages remain in page memory, not across reloads. A message absent from a later check is marked as an earlier copy; it may no longer be available to download. Copy any address you may need later.

The reader shows text rather than active email HTML. Remote images, scripts and embedded content are not loaded. Valid web links are listed separately so you can check their destination before opening them.

The app may identify possible verification codes locally. Check the message before using one; no code is copied until you choose Copy code.

Attachments can be downloaded, not previewed in the app. The download limit is 10 MiB per file. Files above that limit are unavailable here. A missing file can also mean that its message is no longer available.

Export TXT and Export JSON save the open message content and file names, not attachment files or original MIME headers. Exports may contain sensitive information and remain on your device. Downloads are not scanned for malware. Open files only if you trust the sender and have checked them appropriately.

A folder is a message’s single home: Inbox, Archive, Spam, Trash or a view you filter. A label is an extra tag you can attach to any message, and a message can carry several labels at once. Adding a label never moves a message.

Deleting a label removes it from the messages that had it and keeps the messages themselves.

Messages are grouped as Primary, Promotions, Social, Updates or Forums. A rule you write decides first, a local wording or sender signal suggests second, and anything without a strong signal stays in Primary. Nothing is hidden automatically.

Use Why here? to see why a message is in a group, and change the group yourself at any time. Your choice is kept until you change it again.

A rule matches a sender, subject, body, file name, attachment, inbox, label or category, and can then set a category, apply a label, mark read, star, mark important, or move the message to a folder, Spam or Trash. Rules run in order and the first folder move wins; labels accumulate instead of replacing each other.

Use Apply to loaded mail to see how many loaded messages match before anything changes, and Undo reverses the last change when those fields have not been edited again.

A snoozed message leaves the inbox view until the time you choose, then returns. It stays in All mail and keeps its read state. Times use this device’s local time zone, and a chosen time is never shifted silently.

Snoozing is a local view, not a reply or a hold on delivery. If the message can no longer be fetched when the time passes, the app says so instead of rebuilding it.

Views and filters work on mail that has already been loaded for the selected inbox. If you have not checked that inbox yet, or the message has not arrived in the source, the view is empty. The app never claims to have searched mail it did not load.

Automatic checks run only while a KilgoreTM tab is open and visible. They never run once every tab is closed, and they use the same shared request limit as manual checks.

Notifications are optional and request permission only when you ask. They contain the number of new messages and, if you choose, the inbox name. Verification codes and message content are never included.

Press / to focus the search field, j and k to move between messages, Enter or o to open one, x to select it, s to star it, e to archive it, Delete to move it to Trash, and U or I to mark it unread or read. Press ? to open the full list.

Shortcuts never fire while you are typing and never replace Ctrl or Cmd shortcuts. You can turn them off in Settings.

Export workspace saves addresses, inbox names, pins, labels, rules and local message flags as a JSON file. Message bodies, attachments, verification codes and server settings are not included.

Importing checks the file first and shows how many items would be added before anything changes. A rule or label that refers to something missing is reported instead of being applied to everything. Importing never enables automatic checks.

Open Storage and choose Remember on this device. Addresses, names, pins and local flags are then kept in this browser and shared with other tabs using device mode; message content is still never saved. Use session only to return this tab to tab-only storage, or Delete saved inboxes to remove the saved copy after confirmation.

No. There is no account, password or ownership record. Anyone who knows a temporary address may be able to read its mail, and KilgoreTM does not claim otherwise. Use it for short-lived sign-ups and tests, not for accounts you need to keep.

Creating addresses, checking mail and downloading files need JavaScript and a connection. Help, policies and contact pages can be read online without JavaScript.

After a successful online visit, a generic recovery page may be available offline. Messages and inbox responses are never saved in that cache. A first-ever offline visit cannot receive a site-provided fallback.

Use the Contact page. Include the action you tried, approximate time, browser and the visible error. Do not send passwords, verification codes or private mailbox contents. For vulnerabilities, follow the private reporting guidance.