How to Check If Your Email Will Go to Spam (Placement Test)

If you’ve ever typed “how to check if my email will go to spam” into Google the night before a big send, this guide is for you. It’s written for business owners, founders, recruiters and small teams sending a mail merge from their own Google Workspace address.

The reliable way to find out is an email placement test: you send your real email to a few inboxes you control, at the big providers, and look at where it landed. It takes about 20 minutes the first time. Here’s how to set it up, what to look for, and how to read what you find.

What does an email placement test tell you?

A placement test shows where your email actually lands: the main inbox, a secondary tab like Gmail’s Promotions, or the spam folder. It also lets you check, in each message’s details, whether your domain’s security settings passed.

The same email can land in different places at different providers, so test at the three most people use:

Gmail sorts mail into tabs when the person uses its default inbox. Promotions is for deals, offers and other promotional email, while Primary is for email from people you know. Outlook’s Focused Inbox works in a similar way: it puts mail from people you interact with in Focused and moves bulk or automatic email to Other.

How to check if your email will go to spam, step by step

1. Set up test inboxes. Create one free account each at Gmail (@gmail.com), Outlook.com and Yahoo Mail. Use them only for testing.
2. Don’t save yourself as a contact in those accounts. Gmail stops sending a sender’s email to spam once that sender is in the person’s contacts, which would hide the result you’re looking for.
3. Add the test addresses to your real list. Put them as extra rows in the spreadsheet you’ll use for the mail merge, with a first name and any other merge fields filled in.
4. Send the real email, the real way. Same tool (YAMM, GMass, Gmail’s mail merge or your Apps Script), same From address, same subject line, same links and the same template. A plain “test” message tells you nothing about the email you plan to send.
5. Give it a few minutes, then check every tab and folder in each test inbox.
6. Open the message details and check SPF, DKIM and DMARC (see below).
7. Write down the result for each provider, then delete the test email.

Skip your colleagues as testers. Inside your own Google Workspace domain, an admin can turn on a setting that lets internal email skip Gmail’s spam filters, and colleagues probably have you saved as a contact anyway. Their inbox tells you almost nothing about how an outside inbox will treat you.

Don’t click “Not spam” on a test email

If a test lands in spam, leave it there and note it. Clicking “Not spam” teaches that inbox to trust you, so your next test from the same address won’t show the real picture.

Gmail’s help pages say that once you remove an email from Spam, future emails from that sender won’t go to Spam. Yahoo’s say the same for its Not spam button. Moving a test out of Promotions has a similar effect, since Gmail learns from where each person moves their email.

For the same reason, never click “Report spam” on a test. Providers treat it as a complaint against you.

Where to look in Gmail, Outlook and Yahoo

Check every place an email can land, not just the main inbox:

If your email lands in Gmail’s spam folder, open it. Gmail shows a warning at the top of each spam message that explains why it went there, such as the sender couldn’t be confirmed or similar messages were reported. That one line is often the quickest clue you’ll get.

How to check that SPF, DKIM and DMARC passed

Every placement test should include a quick look at your domain’s security settings. SPF, DKIM and DMARC are short records in your domain’s DNS (the settings at the company where you bought your domain) that prove an email really came from you. If they fail, providers are far more likely to send you to spam.

To see the results:

• Gmail: open the test email, click More (the three dots next to Reply), then Show original.
• Outlook.com: open the email, click More actions, then View and View message details.

Checking at Gmail and Outlook is usually enough here, because these results come from your domain’s settings, which are the same whichever provider receives the email.

In the full headers, look for a line called Authentication-Results. You want to see:

spf=pass
dkim=pass
dmarc=pass

If DKIM is missing or doesn’t say pass, your messages aren’t being signed. If SPF fails, the service that sent the email isn’t listed in your SPF record.

For a plain-English explanation of all three, read SPF, DKIM and DMARC explained.

You can also check your records any time with our free domain checker.

How to read your placement test results

Most results point to one of a few causes. Fix the cause, then test again.

Landing in Promotions isn’t the same as landing in spam: the email was delivered, it’s just in a less visible tab. Whether that matters depends on what you’re sending.

Our guide on why your mail merge lands in the Promotions tab covers when it matters and what to change.

If your test showed spam, our checklist for a mail merge going to spam walks through the fixes in order.

Why one test isn’t the whole answer

A placement test is a snapshot. It shows how a provider treats your email today, sent to an inbox that has no history with you. Your real recipients are different in a few ways.

• Each person’s inbox learns. Gmail gets better at spotting spam as each person reports it, and learns where they like each sender filed.
• Work email has extra filters. At a company, an admin can add rules that mark certain email as spam, on top of the provider’s own filters.
• Volume changes the picture. Ten test emails can land well, while 400 sent at once from a quiet inbox may not. Google’s sender guidelines say to increase volume slowly and avoid sudden spikes.
• Reactions count. Once real people start opening, replying, ignoring or reporting your email, those reactions shape where your next email lands.

For real-world data on mail sent to personal Gmail addresses, Google offers Postmaster Tools, a free dashboard that shows your spam rate and domain reputation. It only covers mail sent to @gmail.com and @googlemail.com addresses, and it shows little or nothing until you send a fair amount each day. Google says to keep your spam rate there below 0.10% and never let it reach 0.30%.

Our Google Postmaster Tools guide shows how to set it up.

What a placement test can’t fix

A clean test result means your setup works. It doesn’t mean the people on your list want your email.

Warmup builds trust in your inbox. It can’t make people want an email they didn’t expect.

The biggest risk to any mail merge is emailing people who don’t expect it. They’re the ones who click “Report spam”, and Gmail and Yahoo both ask senders to keep that below 0.3%. Email people who know you, keep links to one or two, skip attachments, and give everyone an easy way to opt out.

Our guide to spam trigger words explains which wording patterns cause trouble and why they matter less than complaints.

Running placement tests with Warmuply

Setting up test inboxes and checking each one by hand works, but it’s slow to repeat before every send. Warmuply runs placement tests for you and shows whether your email reached the inbox, the Promotions tab or spam at Gmail, Outlook and Yahoo. If something’s wrong, it tells you the likely reason.

Placement tests are part of every plan, alongside warmup for your Google Workspace inbox, a daily safe-send number, plain-English SPF, DKIM and DMARC checks, and same-day blacklist alerts. Warmuply works alongside YAMM, Gmail’s mail merge, GMass and Apps Script, so nothing changes in how you send. No tool can promise inbox placement, but testing first means you find problems before your whole list does.

Before you hit send

• Your test reached the inbox (or Promotions, if that’s fine for this email) at Gmail, Outlook and Yahoo.
• SPF, DKIM and DMARC all say pass in the message details.
• Everyone on the list knows you or asked to hear from you, and there’s an easy way to opt out.
• Today’s send is close to what this inbox usually sends, not a sudden jump.

Check your domain settings with our free domain checker. Then start a free 7-day trial of Warmuply and run your first placement test. No card needed.