Build a Platform EmailPatron tool
Subject Line Brainstormer: Hit send knowing you chose well.
You finished the email. Now it needs one short line to make a reader want to open it, and the first idea that comes to mind usually sounds like last month’s. Picture sending the email with a line you chose on purpose, and the quiet confidence that it does your work justice.
Included with membership at $10/month or more.
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You keep your own voice and your own final say, so the line you send still sounds like you.
Your work stays private. Author Media does not store, track, or view what you post. The AI services use business APIs with privacy set to the maximum.
Subject line ideas you are glad to send
The email took hours. The line on top should not take another evening of doubt.
The blank subject box stops staring back
You stop settling for the first idea that came to mind. Ideas show up, and choosing between them feels like the fun part.
Every issue feels fresh
You stop hearing last month’s line in this month’s email. Each issue gets a line of its own, and your newsletter keeps sounding like you with something new to say.
You choose with confidence
The right line stands out when you compare your options, so you choose with a steady hand. You pick one your email truly lives up to, and your readers keep trusting you.
It still sounds like you
You make the final call, then trim and reword until the line is yours, plain or playful, whatever fits the day.
For every email you send
Whether it is a quiet Tuesday newsletter or the biggest announcement of your year, the line on top can be one you are glad you chose.
Your regular newsletter
When every issue’s subject line starts to look the same, you notice. Now you find angles you would not have reached for. Your newsletter is the channel you control, so each issue earns its own reason to open.
A launch, preorder, or cover reveal
Your biggest announcement deserves more than one idea. Whether you publish independently or support your publisher’s launch, you send it with a line you chose on purpose.
A sale, free book, or backlist reminder
A promotion only helps readers who open in time, and it stings when a good deal goes unseen. Your discount or older book gets a fresh angle that your genre’s readers want to open.
Your first emails to a new list
Building a list before your first book? You can try different kinds of lines on those early updates while you learn what your readers respond to.
The day you try a split test
You finally have two lines worth testing, and you feel curious about the result instead of anxious. If your email service runs split tests, you learn something real about your readers instead of comparing two wordings of one idea.
What an author said
Alison Lloyd’s March 2025 comment describes an earlier version of the tool. Your results depend on your email and the lines you choose.
“I really liked the email subject line brainstormer. … most of them much catchier and more interesting than what I had. Very helpful!”
Bring the email you are about to send
You bring
Your genre and a short description of your email, or the draft itself, plus what readers will love about it if you like.
Your work stays private. Author Media does not store, track, or view what you post. The AI services use business APIs with privacy set to the maximum.
You get
A long list of subject lines to choose from and edit, with the chance to reply in the chat for more or different options.
You choose a line your email delivers on, trim it, and put it in your own voice. This tool does not write the email, send it, predict open rates, or check deliverability.
Before you start
What is Subject Line Brainstormer?
It is a friendly second opinion for the moment before you hit send. Subject Line Brainstormer is an AI tool from Thomas Umstattd Jr. that helps authors with an email list choose a subject line for newsletters, launches, and promotions.
Do I need to finish the email first?
No, and there is no pressure to have it perfect. Start with whatever you have today, a rough description of the email or a finished draft.
Will the subject lines sound like clickbait?
Caring about that is a good sign, because your readers’ trust matters. Any brainstormed line can promise more than an email delivers, so you stay in charge of that trust and send only the ones your email lives up to. You can ask for plainer options whenever you like.
Can I ask for more or different options?
Yes, and you never have to settle for the first batch. You can keep asking in the chat until a line feels right.
Does it write the email or the preview text?
Your email stays yours, and so does the preview text. This tool focuses on subject lines. To draft the newsletter itself, use Email Drafter, then bring the draft back here.
Will it tell me which line will get the most opens?
It would be nice to know for sure, but no tool can promise that, and this one does not predict opens. If your email service supports split tests, you can send two very different lines and let your readers decide.
Does it work for nonfiction authors?
Yes, whatever you write. Tell it your category or subject, such as personal finance or Christian living, and you choose the lines that sound like they belong to your readers.
Is my work private?
Yes, so you can paste your draft with a calm mind. Author Media does not store, track, or view anything you post to this tool. The tools reach each AI through its business API with privacy set to the maximum, so the AI companies do not train on your words.
How much does it cost?
Subject Line Brainstormer is included with any Novel Marketing Patreon membership of $10 per month or more. That membership also unlocks more than 80 other author tools in the Patron Toolbox. AI tool use draws from your membership’s credit balance, and the amount used varies with the request.
Make your next send a confident one
Your membership also includes more than 80 other author tools, so the rest of your email life gets lighter too.
AI tool use draws from your membership’s credit balance. The amount used varies with the request.
Patron Toolbox Membership
$10per month or more
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Plan the rest of your email
Before you need a subject line
Email DrafterTurn this month’s notes into a newsletter draft, then bring it back here when it is time for the subject line.
For new subscribers
Drip Email SequencerWelcome new readers with a sequence that introduces you and your book.
For subscribers who stopped opening
Email List CleanerDraft a short re-engagement sequence that invites quiet subscribers back and lets the rest go.
Unlock with Patreon