Subject line checker tool
Use the subject line checker to test your email subject line for spam words!
Here’s the problem with spammy email subject lines…
All email service providers have their respective systems for spam email detection. Their goal is to catch obvious bad actors who are looking to take advantage of unsuspecting email users with spammy, deceptive content to trick them or steal their data.
A spam word checker is a typical detection form. And your subject lines can trigger spam email detection automatically, relegating your emails to Spam.
How the email subject line checker works
Our free email subject line tool compares the text found in your subject line against a collection of well-known spam trigger words. Email service providers aren’t looking to block legitimate contact like yours, so they make no secret of what words or phrases can trigger their filters.
Our subject line/spam word checker highlights any known spam words and gives you a ratio of how many there are compared to safe-for-use words or phrases. Think of it like this: the more spam trigger words that are present, the more likely it is to impact email deliverability.
Examples of spam trigger words:
- ✔ Cheap
- ✔ Debt
- ✔ Eliminate debt
- ✔ Trial Offer
- ✔ Prize
- ✔ You won!
- ✔ Bonus
- ✔ Read this
- ✔ Prescription
- ✔ Invest
Best practices for creating safe and effective email subject lines
So – what are email marketing best practices when it comes to subject lines?
Keep these email marketing tips in mind.
Be direct and descriptive
Everyone wants to include a little bit of clickbait in their subject lines. A bit of intrigue is acceptable (and practical!), but recipients should always have an understanding of what’s inside your email.
Readers should know from your email subject lines if they’re checking out an offer, an announcement, an update, or some other description that helps them understand how the email benefits them. Email service providers will also be checking to help them avoid spam emails.
Work within visible character limits
There are no rules against limits, and exceeding them won’t trigger any spam email detection.
However, working within the visible character limits prevents your subject line from being truncated. It’s also helpful for keeping your email subject lines direct and to the point.
Personalize it for the reader
Personalization is always referenced when it comes to email marketing tips. But, let’s face it - personalizing every email isn’t always possible (or necessary). With that said, sending emails that are heavily tailored to the reader is known to improve email open rates.
Here’s the thing—personalization doesn’t mean just adding a merge tag for an attribute like the first name. Readers know when an email is built with a template and when you take the time to email them.
When crafting your next subject line, think about these things:
- Who is it for specifically?
- What problem are they facing, or what needs do they have?
- How are you going to help?
If your email's subject line is generic, your readers may never open it. Include these details to make it count.
Use email deliverability tools like a deliverability tester
If you have any doubts about spam email detection, use a tool designed to test campaign deliverability.
Here’s how it works:
When crafting your next subject line, think about these things:
- You send your campaign to a list of seed email addresses, which are accounts created with various known mail providers.
- The deliverability/inbox placement tester will run an analysis of your campaign. The test will check headers, sender information, authentication records, and content (like your email subject line).
Then, you’ll get a report of which providers placed your email into the Inbox, Spam, or Promotions. You can use this feedback to update your email subject lines to improve your deliverability and ensure you aren’t mistakenly caught in spam email detection.
Want to use our email deliverability tool to test your email?
Try our Inbox Placement Test for free now!
Check out these email deliverability tools to help you avoid spam email folders
Warmup
Still hitting Spam after using our free email subject line tool? It could be your sender reputation.
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Inbox Placement Testing
Take Spam email detection to the next level by testing your campaign with 20+ well-known mail providers, including Gmail/G-Suite, Outlook, Yahoo, and more.
1 free test included monthly with all accounts
Email Server Testing
Ensure that an email server configuration error isn’t preventing you from reaching the inbox.
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1 free test included monthly with all accounts
Blacklist Monitoring
If you’re still hitting Spam with these email marketing tips, you need to make sure your domain isn’t on a blacklist/blocklist.
Create a free account today and start monitoring your domain at no cost.
1 free monitor (scans every 24 hours) included with all accounts
DMARC monitoring
Securing your email and authenticating your identity will keep emails out of spam and improve email open rates.
Set up a new DMARC policy today and monitor all outgoing emails sent from your business domain.
Free email verifier
Avoid bounces and risky emails. Check any email address with our free email validation and verification tool.
Find out if your contact’s address is valid and any other relevant information, including domain information and social data, when available.
Want to learn more? Check out our handy Email Deliverability Toolkit guide!
Avoid spam email with our free email subject line tool
Getting rid of spammy subject lines is easy. Click below to head back up and use our email subject line checker – and bookmark this page for frequent use!
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