Welcome to our free email spam checker tool and preview of Mailvio's AI Email Writer tool. The spam checker identifies all spam trigger words in your email and instantly calculates your spam ratio. Stay under 3% for normal emails with good sender reputation. If you are in warm-up or reputation repair mode aim for 0.
Our AI will analyze your email, reduce spam trigger words to under 3%, and rewrite the subject line for
maximum impact.
0/5000 characters
This is a demo. The spam detection works in real-time, but the AI rewriting is disabled.
Spam ratio:
0.00%
Total count: 0
Spam triggers found:
None detected! ✓
How it works: As you type, we analyze your content in real-time to detect spam trigger words. Aim for under 3% spam ratio for best deliverability.
Writing promo emails is hard. AI spam filters are specifically trained to sniff out sales texts.
Our AI agent is trained on over 120 million emails to help you write high-converting promo campaigns (1-5 emails)
that land in the inbox!
1
The "What"
2
The "How"
3
The "Why"
Enter the URL of the sales page, landing page, or blog post you want to write emails about.
Loading email templates...
What is the ONE thing you want the reader to do?
0/500
0/800
0/800
0/2700
This is a demo. All fields are functional, but campaign generation is disabled.
Writing long email sequences (5 - 40 emails) is hard and expensive! Let our AI Agent remove that nasty empty
looking screen for you and write your sequence with overarching storyline for you. The emails are humanized
and optimized and each email pushes the reader closer to the one main goal of your sequence. This tool is
previously known as AutomationAI.
Step 1: What is the end goal of this Automation?
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Step 2: Who are you and setting the tone
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Step 3: Who will the readers be?
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OPTIONAL Step 4: Fine tuning
How many emails do you want in your sequence?
(by default we let the AI decide!)
How many days wait time in between emails do you want?
(by default we let the AI decide, can always be changed later in Automation editor!)
Pick your AI mode (Normal or Premium)
(depends upon the subscription plan you have)
How to address the recipient of the email?
(by default we let the AI decide, can always be changed later in Automation editor!)
Anything else you want to tell the AI to include or not include?
(This field is great for introducing a list of facts for the AI to use that are relevant to the main goal of your sequence)
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Our Premium AI blends OpenAI, Gemini, and Claude for best results. Using your own key locks the agent to
that provider only, which may slightly reduce quality and raise occasional errors.
Best single-provider choices: Claude (latest) or Gemini (Pro 2.5). For additional premium credits,
contact support.
Connect your AI Models
Provide an API key to power the Email Writer. Your keys are stored securely and can be rotated anytime.
Preview:
We never store your keys in plain text. Rotate or revoke them anytime at your provider.
Email Promo Writer would cost: $0.15 - $0.25 per email
Email Sequence Writer would cost: +/- $0.02 per email
Note that Email Sequence Writer does not yet have the agent implemented that removes and replaces spam
trigger words neither the agent that copies your tone of voice! We will add this in the near future and
we'd expect the cost per email to go up because of that once released.
Ready to unlock the full power of the Mailvio platform?
Get access to AI-powered email rewriting, spam optimization, and deliverability tools with every Mailvio subscription.
What action should readers take?
Keep your Call To Action clear, specific, and benefit-driven. Start with a strong verb (e.g., Get, Claim, Download), highlight the value or outcome, and add urgency or specificity when relevant (e.g., today, in 3 minutes, before midnight). Avoid vague CTAs like "Click here" without context.
Popular examples; click to use
Claim your 50% discount now
Start your free trial today
Reserve your seat for the webinar
Add to cart before midnight
Download your free guide
Angle Help
What unique angle should the email take?
Choose a perspective that resonates with your audience and aligns with your offer. Angles can be benefit-first (save time, cut costs), story-driven, social proof-focused, scarcity/urgency, objection-busting, or educational. Pick one and keep it consistent throughout the email.
Popular examples; click to use
Focus on time-saving benefits
Highlight social proof and testimonials
Emphasize limited-time scarcity
Address a common pain point (e.g., slow processes)
Present a before-after-bridge
Giveaways Help
Add bonuses, extras or incentives to increase conversions.
Offer relevant, high-perceived-value bonuses that remove friction or amplify the core offer (e.g., checklists, templates, onboarding, extended support). Be explicit about what's included and why it matters to the reader.
Popular examples; click to use
Bonus: 15-page Quick Start Guide
Bonus: 30-minute onboarding call
Bonus: Checklist + Templates
Limited-time: Free shipping
Early-bird: Extra 10% off
Voice Pattern Help
What should I paste here?
Paste a few paragraphs or a recent email that represents your writing voice and tone. The AI will analyze sentence structure, pacing, vocabulary and personality cues to match your style in the generated emails.
Tips:
• Use at least 2–4 paragraphs for best results
• Avoid including sensitive information
• Prefer conversational samples you would send to your audience
Step 1: What is the end goal of this automation - help
Start with the end-goal in mind.
As marketers and entrepreneurs we are so used to thinking about the steps we need to take to get to a certain end result. The power of AI lies in the fact that we START with the end result and let the AI work its way backwards with many iterations to get to the desired end result in the best way possible.
That is what we want you to tell us here. What is your desired end result of this particular new automation?
Popular examples; click to use
the goal of this email series is to get people to buy my high ticket done-for-you funnel building service
the goal of this email series is to get people to subscribe to me on all my social media channels. Being: Youtube, TikTok and Instagram
the goal of this email series is to give people pure value and fill the reciprocity bucket so that they like, know and trust me more
the goal of this email series is to launch my SaaS product {ProductName} and sell a special one-time offer
Step 2: Set the tone - help
You get to choose who is writing your emails
The AI is everybody, and nobody. It can mimic the tone of voice of famous writers, fictional characters and even.... YOU. But because the AI is everybody at the same time it is crucial you tell it which 'voice' it should adapt for this particular task. That is what we do right here.
You can either describe it in all the colorful words you can think of or just name drop (e.g. "write in the style of Barack Obama"). Name dropping is a great shortcut - if you want to describe the tone the more specific and descriptive you get, the better the results.
Popular examples; click to use
You are writing this email series in the style of the famous copywriter Eugene Schwartz for company {YourCompany}. {YourCompany} provides Facebook ads and Youtube ads management service with a no-bullshit approach.
You are writing this email series in the style of famous comedian Dave Chappelle for our company {YourCompany}. Although we take our products and services seriously we approach the rest with a healthy dose of humor. Our company provides 24/7 emergency plumbing in the New York area
You are writing this email series as our company {CompanyName}. We stand for transparency & radical honesty with our products & services. Our communication is direct & to the point. We build great software for medical companies that is reliable and works every time.
Step 3: Who will the readers be - help
Always remember who's at the other end.
You are never writing marketing emails for yourself! You are writing for the readers, the real humans that sit on the other end of the computer screens. As is very evident on many social media people tend to forget easily that there's also a human on the other end of the screen so we need to do a good job to make the AI realize this and who it is writing for.
If you wrote for construction workers but the message is read by CEO's it will definitely fall on deaf ears!
Popular examples; click to use
the readers of this email series got on my list after signing up via a landing page where I promised them tips & tricks about email marketing
the readers of this email series are startup founders who are building a new SaaS startup. They either have already tried & failed a few times or are first time founders and are overwhelmed with everything they need to manage. Not just building their product but also promoting it at the same time and providing top-notch customer service. They are reading these emails to learn about how 'The SaaS Builders' can help them prevent making mistakes
the readers of this email series are affiliate marketers who want to learn how to build effective email automations and drive consistent traffic to the offers they are promoting while at the same time nurturing their relationship with their subscribers