TempFox Multi Mail + OTP – Get this Extension for 🦊 Firefox (en-GB)
TempFox puts temporary inboxes, verification-code detection, and user-triggered signup filling in one Firefox popup.
Create an inbox without exposing your primary email address, switch between recent inboxes, read messages as safe text, and copy or paste verification codes when testing low-risk signup flows.
Multiple temporary-mail providers<br>TempFox integrates several independent temporary-mail APIs, including Catchmail, Mail.tm, Guerrilla Mail, TempMail.lol, Maildrop, InboxKitten, DropMail.me, MailboxTemp, Getnada, and Mail.gw when available.
Rotate across available providers and domains<br>Select a specific provider/domain manually<br>Prefer .com, .net, .org, or uncommon endings<br>Automatically try another provider when an API is unavailable<br>Keep up to eight recent inboxes locally<br>Provider availability, domain pools, inbox lifetimes, quotas, and fair-use limits are controlled by each third-party provider and may change. TempFox is free to install, but it does not promise unlimited third-party API access.
OTP and verification codes<br>TempFox detects common verification-code formats:
numeric codes such as 654321<br>mixed alphanumeric codes such as A7B9C2<br>six-letter codes such as ABCDEF<br>separated codes such as 482-910<br>Calendar years such as 2026 are filtered so they are not mistaken for OTPs unless explicitly labeled as a code.
Use Paste to page after opening a message, or optionally enable OTP auto-paste. Auto-paste checks only the active tab for a likely OTP field and never submits the form.
Local signup credentials<br>Each inbox can have a locally generated username and cryptographically random password. Click Fill signup to fill likely email, username, password, and confirm-password fields in the active tab.
User-triggered only<br>Configurable 12–24 character passwords<br>Uppercase, lowercase, and numbers<br>Optional symbols<br>No automatic form submission
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Required permissions:<br>Display notifications to you<br>Optional permissions:<br>Access your data for catchmail.io<br>Access your data for api.catchmail.io<br>Access your data for api.mail.tm<br>Access your data for api.mail.gw<br>Access your data for api.guerrillamail.com<br>Access your data for api.tempmail.lol<br>Access your data for api.maildrop.cc<br>Access your data for inboxkitten.com<br>Access your data for dropmail.me<br>Access your data for mailboxtemp.com<br>Access your data for getnada.net<br>Data collection:<br>The developer says this extension doesn't require data collection.<br>Learn more
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Version4.5.3<br>Size75.36 kB<br>Last updated9 days ago (29 Jul 2026)<br>Related CategoriesPrivacy & Security
LicenceAll Rights Reserved<br>Privacy PolicyRead the privacy policy for this add-on<br>Version HistorySee all versions
Tagsprivacy<br>security
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