Random Email Generator – Generate Dummy Test Emails Online
Generate safe dummy email addresses using RFC 2606 test domains or custom domains. Choose prefixes and export clean CSV/TXT lists for QA sign-up testing.
Open ToolGenerate thousands of valid Gmail dot trick and plus tag aliases instantly. 100% free, private client-side permutations with one-click TXT & CSV export.
alexdev • Max dot variations: 2^(7-1) = 64Because there are only 6 character slots for dots, generating 100 would create duplicates. To generate 100 unique aliases, you can:

Don't manually copy-paste hundreds of aliases into registration forms. Let RunMacro loop through your generated Gmail list and automate form submissions natively.
Type your primary Gmail username without dots, spaces, or domain extensions (e.g. alexdev).
Choose between Dot Trick permutations, Plus (+) sub-address tagging, or the Combined mode.
Click Generate to create up to 1,000+ unique aliases instantly. Copy all or export as clean CSV/TXT.
Zero data uploaded. All email permutations are calculated in your browser memory via Web Crypto & bitwise math.
Full compliance with RFC 5321 sub-address standards and Google Mail dot-normalization routing rules.
Export structured lists with index, base username, and addressing method ready for automated QA test suites.
Generate up to 1,000+ aliases in milliseconds to fuel multi-account registration and web automation scripts.
Technical breakdown of Google Mail routing rules, RFC 5321 compliance, and maximum theoretical permutations.
| Addressing Technique | Technical Routing Rule (Google) | Permutation Formula | Inbox Delivery Destination |
|---|---|---|---|
| Gmail Dot Trick (Period Normalization) | Google MX servers ignore all periods (.) in the local-part before @gmail.com | 2^(n-1) variations (where n = character count) | Routes seamlessly to base username@gmail.com |
| Gmail Plus (+) Tagging (Sub-Addressing) | Complies with IETF RFC 5321 (Sec 4.1.2); everything after + is treated as a label | Infinite (Limited only by 64-char local-part limit) | Routes to base inbox with automatic search/filter label tag |
| Google Workspace (Custom Domains) | Plus tagging works by default; dot normalization requires Google Admin setting | Configurable per G-Suite tenant | Delivered to corporate mailbox based on workspace policy |
| Combo Addressing (Dots + Plus Tags) | Merges period normalization with dynamic label tagging simultaneously | 2^(n-1) × tag count | 100% routed to base inbox; recognized as unique by 99% of web forms |
| @googlemail.com Interchangeability | Google operates @googlemail.com interchangeably (historical UK/Germany domain); handled by identical MX infrastructure | 2× multiplier (Doubles all dot/plus combinations) | Delivered directly to primary Gmail inbox |
Clear answers about using this tool and automating workflows with RunMacro.
Google Mail ignores periods (dots) in your username. For example, emails sent to john.doe@gmail.com, j.o.h.n.d.o.e@gmail.com, and johndoe@gmail.com are all routed to the exact same inbox. However, most websites and apps treat each variation as a completely unique email address.
Gmail allows you to append a plus sign (+) followed by any word or number to your username (e.g. johndoe+news@gmail.com). Messages sent to this address arrive in your primary inbox and can be automatically organized using Gmail inbox filters.
Yes. Because Google Mail routes all dot variations and plus tags directly to your primary username, all confirmation links, one-time passwords (OTPs), and notification emails will arrive in your main inbox without any forwarding setup.
Yes! Google owns both domains and routes them interchangeably. Every Gmail account automatically owns its corresponding @googlemail.com address. Emails sent to username@googlemail.com arrive in your standard inbox, effectively doubling your total permutation capacity.
RunMacro Web Automation can read your exported CSV list of Gmail aliases and automatically populate web registration forms, submit account details, and handle repetitive multi-user onboarding tests with custom delays.
Explore other helpful browser-based utilities in the same category.