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Email Spam Tester

ChatGPT plugin

Check email before you send

View in ChatGPT directory

Email Spam Tester checks an email the way receiving mail servers do, before it goes out to your list.

Ask for a test address and send your draft to it from the platform you normally use. Within a minute the card in the chat turns into a report: a score out of 100, SPF, DKIM and DMARC, reverse DNS, TLS, 21 blocklists, links, HTML structure, the Gmail and Yahoo bulk-sender rules, SpamAssassin and Rspamd verdicts and a ClamAV scan. The report ends with a fix plan, and DNS records come ready to paste. ChatGPT can rewrite the draft from there, and you test again with a fresh address.

The same send can also show which folder the email lands in at different mailbox providers (inbox, promotions or spam). The provider inboxes are shared test inboxes, so use a message that is not confidential for that part.

Some mail comes as a sequence: a welcome series, a weekly newsletter, order emails. For those, open a permanent mailbox for your domain and subscribe it. Every letter it receives gets the full check, and the plugin shows the series with the problems that repeat from one letter to the next.

The plugin does not send email for you and cannot see your mailbox or your sending platform. You send the test message yourself, because half of the checks read what your platform adds to it.

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Movement

From our daily snapshots over the last 30 days.

Rank by placement

#8240of 10,7042places up24h—7d
#8,225#8,232#8,239#8,246Oct 4Oct 10Oct 16Oct 22Oct 28Nov 2

Rank in Developer tools

#707of 8661places up24h—7d
#706#707#708Oct 4Oct 10Oct 16Oct 22Oct 28Nov 2

In its category

How this plugin compares with others in the same category. Positions are counted within the category, not across the whole directory.

Developer tools707th of 866 by placement
#PluginPosition7d
705ThemeSniffer#8206143places up
706Yes2SDK#8222—
707Email Spam TesterThis page#8240—
708VibeRaven#8246430places down
709Layzr#8250630places down

All 866 Developer tools plugins

Also on other marketplaces

Screenshots

  • Email Spam Tester screenshot
  • Email Spam Tester screenshot

Example prompts

  • “Check my email for spam problems before I send it”
  • “Test my newsletter and show which folder it lands in at different providers”
  • “Give me a permanent address to track my welcome email series”
Categories
Made by
Serhii Tanichev · Website
Sign-in
On Install
Capabilities
Reserve a one-hour test address, Full check: SPF, DKIM, DMARC, blocklists, content, Fix plan with DNS records, Folder at different mailbox providers, Permanent mailbox for a series of letters
Availability
Available
Version
1.0.1
Keywords
email, deliverability, spam, spf, dkim, dmarc, inbox placement, newsletter
Created
September 30, 2026
More info
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