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Dummy Email Subject Line Generator
An inbox mockup is only as convincing as its subject column. This generator supplies placeholder subject lines from four hand-written pools of 15 each — marketing (“Last chance: ends tonight”), transactional (“Invoice #4821 from Acme Co”), personal (“Dinner Thursday?”), and notification (“Alert: login from new device”) — plus a mixed mode that draws across all 60 for the jumbled feel of a real inbox. Within a run, lines are de-duplicated until the pool runs dry, and that is the catch with single-type batches: each type holds 15 lines, so requesting more than that forces the generator to pad with reused lines tagged with a random number (“Checking in 62”), which looks broken in a mockup. Keep single-type requests at 15 or below, or switch to mixed mode when you need up to 40 rows. Everything is fictional — no real names, order numbers, or account data — so screenshots, client demos, and recorded walkthroughs are safe without blurring anything.
How to use
- Choose your options above
- Click Generate
- Copy your result
Detailed instructions
- Set the Number of Subject Lines input to match how many inbox rows or test cases you need.
- Choose an Email Type from the dropdown: marketing, transactional, personal, notification, or mixed.
- Click Generate to produce the list of placeholder subject lines instantly.
- Review the output and click Generate again if you want a fresh batch with different phrasing.
- Copy the list and paste it into your design tool, component data file, or testing script.
Use Cases
- •Populating a Figma inbox component with 20 varied subject lines to test truncation at 375px mobile width
- •Seeding a CRM demo environment with transactional subjects like shipping updates and invoice confirmations
- •Filling a notification center prototype with 50 mixed subjects to stress-test scrollable list rendering
- •Generating realistic inbox data for an onboarding walkthrough video without exposing real user correspondence
- •Creating a marketing versus transactional split-view screenshot for a client pitch deck or product hunt launch
Tips
- →Use mixed mode for general inbox mockups but switch to a single type when designing a dedicated tab, like a Promotions or Transactions folder.
- →Generate 20-30 subjects even if your design only shows 10 — having extras lets you hand-pick the ones with the most realistic character counts for your layout.
- →Pair transactional subjects with a dummy order number generator to create complete, believable receipt email rows in a purchase history UI.
- →Test your truncation logic specifically by scanning the output for the longest subjects — these will expose line-wrap and ellipsis bugs that short subjects miss.
- →For notification center prototypes, generate notification-type subjects separately so alert-style phrasing stays consistent and does not mix with conversational personal tones.
- →When building onboarding screenshots for app stores or marketing sites, avoid generating too many marketing subjects — a mix weighted toward personal and transactional looks more like a real user's inbox.
FAQ
how do i generate fake email subject lines for a figma inbox mockup
Set the count to match your visible inbox rows, choose mixed mode for natural variety, and paste the output into your component's data source or text layers. Mixed mode combines promotional, transactional, personal, and notification styles the way a real inbox would.
are these subject lines taken from real emails
No — every line is written for this tool and contains no real names, account numbers, or private data. That makes them safe for public demos, client-facing presentations, and shareable screenshots without redaction or blurring.
what is the difference between transactional and notification subject lines
Transactional subjects follow user-initiated actions: order shipped, password changed, invoice ready. Notification subjects are platform-triggered alerts: a new comment, a login warning, a follower update. Keeping them separate lets you populate distinct UI sections, like a purchases tab versus an activity feed.
why do some subject lines end with a random number
That's the overflow behavior: each single type holds 15 unique lines, and once a request exhausts them the generator pads the rest by reusing lines with a random number appended. Keep single-type counts at 15 or under, or use mixed mode, which has 60 unique lines to draw from.
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