Frequently Asked Questions
Everything you need to know about our email tools, Gmail tricks, and email best practices.
Gmail Tools
What is the Gmail dot trick?
Gmail completely ignores dots (periods) in email addresses. This means john.doe@gmail.com and johndoe@gmail.com go to the exact same inbox. Our Gmail Dot Generator helps you find all possible dot variations of your address.
How many dot variations does my Gmail address have?
For a username with n characters, there are 2^(n-1) possible dot variations. A 5-character username has 16 variations; a 10-character username has 512. Our tool calculates all of them instantly.
Does the Gmail dot trick work on Google Workspace accounts?
No, the dot trick only works for standard @gmail.com addresses. Google Workspace administrators can enable or disable this behavior for custom domain accounts.
What is Gmail plus addressing?
Gmail allows you to add +anything after your username before the @. For example, yourname+shopping@gmail.com still delivers to yourname@gmail.com. It's called subaddressing and is useful for filtering and tracking emails.
Can I log into Google with a dot variation of my email?
No. You can only log into Google services with your canonical email address (the one you registered with). Dot variations work for receiving email only.
Do other email providers support the dot trick?
No, this is specific to Gmail. Other providers like Yahoo, Outlook, and custom domain email servers treat dots as significant characters, meaning john.doe@yahoo.com and johndoe@yahoo.com are completely different accounts.
Email Validation
What does the email validator check?
Our email validator checks RFC 5322 syntax compliance, the local part (before @) for valid characters, the domain format, TLD validity, presence of consecutive dots, common typos in popular domains, and whether the domain belongs to a known disposable email service.
Why does a real email fail validation?
Our validator performs format and domain checks only — it does not send test emails. A real address could fail if it has an unusual format, a very new or obscure TLD, or a domain our disposable database incorrectly flags. The most authoritative validation is sending a verification email.
Can the validator check if an email is actually deliverable?
Our free tool checks format validity only. True deliverability requires an SMTP check or sending a test email. For bulk verification needs, professional services like NeverBounce or Hunter.io offer SMTP-level verification.
Email Extractor
What types of content can I extract emails from?
Any plain text — website copy, HTML source, CSV files, log files, code, documents, spreadsheets. Paste the text into the extractor and it will find all email addresses using pattern matching.
Does the extractor handle duplicates?
Yes, our Email Extractor automatically deduplicates results. Each unique email address appears only once in the output, regardless of how many times it appears in the input.
Disposable Email Checker
How does the disposable email checker work?
We maintain a database of thousands of known disposable email domains (like mailinator.com, guerrillamail.com, temp-mail.org). When you check an address, we compare its domain against this list.
If an email passes the disposable check, is it real?
Not necessarily. A "not disposable" result means the domain isn't in our known disposable list. The email could still be fake, invalid, or belong to a new disposable service we haven't indexed yet.
How often is the disposable domain database updated?
We regularly update our database to include newly discovered disposable email services. However, since new disposable domains appear constantly, our list may not be 100% comprehensive.
Privacy & Security
Do you store the emails I enter into your tools?
No. All our tools run entirely in your browser using JavaScript. Nothing you type is ever sent to our servers. Your email addresses are completely private.
Is it safe to use these tools?
Yes. Since all processing happens in your browser, there's no risk of your email data being intercepted or stored. Our tools are read-only — they generate or analyze data without transmitting it.
Are these tools free?
Yes, all tools on Email Tools Pro are completely free. There's no signup, no subscription, no usage limits, and no hidden costs.
What's the difference between email aliases and disposable emails?
An email alias is a permanent alternative address that forwards to your real inbox. A disposable email is a temporary address that expires after a short period and has its own inbox. Aliases are better for ongoing privacy; disposable emails are for one-time use.
Email Permutation Generator
What is email permutation?
Email permutation generates all possible email address formats for a person at a given company domain. Since companies typically use consistent email naming conventions (like firstname.lastname@company.com), you can guess the right format by generating all common patterns.
Is email permutation legal?
Generating email permutations is legal. However, sending unsolicited commercial email to addresses you've guessed without prior permission may violate CAN-SPAM, GDPR, or CASL regulations. Always verify consent and comply with applicable laws before sending cold emails.