Mailchimp
Test a draft campaign as Mailchimp sends it, and keep a permanent address in an audience that checks every campaign it receives.
Open MailchimpHome › Integrations
Integrations
Start the spam test from the tool that already sends your mail. Some tools below work through your account or a plugin, and for six more sending platforms there is a guide to mailing one real email to a test address.
Sending platforms
Connect the account once and test a campaign from inside the tool that sends it.
HubSpot
Test a marketing email from inside HubSpot and keep the results in one history.
Open HubSpotHosting and servers
Plugins for the people who run the server. The customer tests a mailbox from the panel they already use.
cPanel & WHM
A plugin for hosting providers; customers test a mailbox from the Email section and fix DNS from the findings.
Open cPanel & WHM
Plesk
The same for Plesk, opened from the Mail tab of a domain, with buttons that fix DKIM, SPF and DMARC.
Open Plesk
WordPress
A plugin that tests the emails your site sends through wp_mail and whatever SMTP plugin is behind it.
Open WordPressAutomation and CI
Zapier
Create a test address in a Zap, send to it from any app and pass the score on.
Open Zapier
n8n
One community node that gets an address, waits for the report and hands on what to fix.
Open n8n
GitHub Actions
Fail a build when a template change breaks authentication or the score drops.
Open GitHub Actions
GitLab CI/CD
The same check as a catalog component, with each result in the merge request.
Open GitLab CI/CDAPI
A REST API for anything else.
Open the API docsAI assistants and editors
All of these talk to one hosted MCP server, so the test and the report are the same in each.
Claude
A connector in the Claude directory; Claude gets an address, reads the report and writes the DNS records.
Open Claude
ChatGPT
The test in a conversation, with the report in a card and a permanent address for a whole series.
Open ChatGPT
Claude Code
One command, or a plugin that adds a skill for reading the report.
Open Claude Code
Cursor
The agent tests what your code sends and opens the file to change.
Open Cursor
Gemini CLI
A spam test from the Gemini prompt, set up in settings.json.
Open Gemini CLI
GitHub Copilot
Agent mode in VS Code, with the config in the repo for the whole team.
Open GitHub Copilot
Zed
A context server for the agent panel.
Open Zed
Warp
For testing a relay from the terminal it runs on.
Open Warp
OpenCode
A remote entry in opencode.json, for whichever model you run.
Open OpenCode
Any MCP client
The server address and the usual config.
Open Any MCP clientBrowser extension
Chrome
An extension that gives you an address from the toolbar and tells you when the report is ready.
Open ChromeGuides · no connection needed
Guides for other sending platforms
There is no connection to these platforms yet. You do not need one: every one of them can send an email to any address, and a real email from your account is exactly what the test wants to see. Each guide shows where the test send is in the platform, why a test send and a real campaign can get different results, and which DNS records that platform asks you to publish.
An integration sends the test for you. A guide shows you where to press send yourself. The report is the same.
Brevo
Run a real Brevo campaign through a spam test and see SPF, DKIM, DMARC, blocklists and spam scores, and why your sender may become brevosend.com.
Read the Brevo guideSendGrid
How to point a SendGrid Single Send or a v3 API call at a disposable address, and how to read the SPF, DKIM, DMARC and unsubscribe results.
Read the SendGrid guideAmazon SES
Use aws sesv2 send-email to mail a throwaway test address, then check DKIM, custom MAIL FROM, DMARC alignment and unsubscribe headers.
Read the Amazon SES guideKlaviyo
Run a Klaviyo campaign or flow email through a spam test, avoid the Smart Sending trap, and see why the shared sending domain fails DMARC for your brand.
Read the Klaviyo guideActiveCampaign
Send an ActiveCampaign campaign or automation email to a one-off test address, then read DKIM, Mailserver Domain, DMARC and blocklist results line by line.
Read the ActiveCampaign guideMailerLite
MailerLite test emails carry a [TEST] label and no unsubscribe header. Send the real campaign to a one-hour test address instead and see what to fix.
Read the MailerLite guideYour platform is not listed?
Yes. Anything that can send email to an address works: copy a test address from the home page, send your email to it and open the report. If you would like a proper connection to your platform, write to us and say which one.
Not connected yet
None of these exist yet. Tell me which one you would use and it moves up the list.
Kit
test a broadcast before it goes out.
Make
a module for scenarios, like the Zapier one.
DirectAdmin
the panel plugin for a third control panel.
Activepieces
a piece for flows, like the n8n node.
mailcow
a check from the admin page of a self-hosted server.
Pipedream
a component for workflows.
Shopify
test the emails a store sends from its admin.
Gmail add-on
test the message you have open.
Slack
reports posted to a channel.
Outlook add-in
the same as the Gmail add-on, in Outlook.
Telegram
a bot that hands you an address.
Grafana
the score of a domain on a dashboard.
Questions
Which integration should I use?
If your platform is in the first list, use that: it sends the test from your account with your settings and keeps the history. Otherwise follow the guide for your platform, or send any email to an address from the home page. The report is the same 42 checks and the same optional inbox test either way.
Is any of it paid?
No. The integrations, the plugins and the API use the same free tests as the site.
My platform is not listed. Can I still test it?
Yes. Anything that can send email to an address works: copy a test address from the home page, send your email to it and open the report. If you would like a proper connection to your platform, write to us and say which one.
Test an email now
One address, one email, valid for an hour. No account. The report builds itself as the checks finish.