Email spam checker
Paste your email and get a spam score with a checklist of what filters look for — subject, words, links, images, size and compliance.
Why emails land in spam
Is a low score a guarantee of the inbox?
No checker can promise that. Inbox placement also depends on your sending domain’s authentication (SPF, DKIM, DMARC), your reputation and how people engage with your emails.
What matters most?
Authenticate your sending domain, only email people who asked to hear from you, remove bounced addresses, and make unsubscribing easy.
Why does the size matter?
Gmail clips emails larger than about 102 KB and hides the rest — including your unsubscribe link and footer.
Why are image-only emails a problem?
Spammers hide text in images, so filters distrust emails with lots of images and little text. Many people also have images turned off.
Do I need an unsubscribe link and an address?
Yes. Anti-spam laws require a working unsubscribe link and your postal address in marketing emails, and Gmail and Yahoo now require one-click unsubscribe for bulk senders.