Email Spam Tester
ChatGPT pluginCheck email before you send
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.
- Featured
- No
not on the featured shelf
Movement
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Rank in Developer tools
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
| # | Plugin | Position | 7d |
|---|---|---|---|
| 705 | #8206 | 143places up | |
| 706 | #8222 | — | |
| 707 | #8240 | — | |
| 708 | #8246 | 430places down | |
| 709 | #8250 | 630places down |
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Screenshots
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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