mailfloss
ChatGPT pluginVerify emails and lists
mailfloss is an email verification service. Connect your mailfloss account to check email addresses and lists without leaving the conversation.
What you can do:
- Verify one email address and get its verdict (passed, undeliverable, risky or unknown), the reason, and any typo suggestion.
- Verify a list of addresses as a background job, follow its progress, and see which addresses failed and why.
- Check your remaining verification credits, usage for a period, and past verification jobs.
- See which email platforms you have connected to mailfloss, such as Klaviyo, Mailchimp and Kit, check that their credentials still work, and change how mailfloss cleans them.
Verifying addresses uses credits from your mailfloss account. Batch verification, cancelling a job, and changing or disconnecting an email platform change your account.
You sign in with your mailfloss account and approve the connection. The plugin can do only what your role in your mailfloss organization allows. You need a mailfloss account to use it.
mailfloss is #11,803 of 13,927 ChatGPT plugins by placement, up 120 places in a week.
- Featured
- No
not on the featured shelf
Movement
From our daily snapshots over the last 30 days.
Rank by placement
Rank in Business & operations
In its category
How this plugin compares with others in the same category. Positions are counted within the category, not across the whole directory.
Business & operations2,027th of 2,396 by placement
| # | Plugin | Position | 7d |
|---|---|---|---|
| 2025 | #11799 | — | |
| 2026 | #11802 | — | |
| 2027 | #11803 | 120places up | |
| 2028 | #11816 | — | |
| 2029 | #11817 | — |
Also on other marketplaces
Example prompts
- “Verify this email address before I add it to my list.”
- “How many verification credits do I have left?”
- “Show my last five verification jobs and how each one went.”
Skills
verify-before-send
Verify a list of email addresses with mailfloss before sending a campaign or importing contacts. Counts the addresses, confirms the credit cost, runs one batch verification, and reports which addresses to keep, fix, review or remove.
- Categories
- Sign-in
- On Install
- Capabilities
- Verify an email address, Verify a list of email addresses, Suggest fixes for misspelled addresses, Track batch verification progress and results, Cancel a batch verification job, Check remaining verification credits, Report verification usage for a period, List past verification jobs, List connected email platforms, Test an email platform connection, Change list-cleaning settings, Disconnect an email platform
- Availability
- Available
- Version
- 1.0.0
- Keywords
- email verification, email list, deliverability, bounces, email marketing
- Created
- October 26, 2026
- More info
- Sponsorship
- Promote this plugin