Integrations · The Newsletter Plugin
Email plugin for The Newsletter Plugin
Write to subscribers who really receive your newsletter.
Stops typos and mailboxes that cannot receive when the visitor subscribes, and verifies the subscribers you already have: fewer bounces, more people reached.
- Free plugin
- 500 emails verified free every month
- No credit card
Outcomes on the subscriber page
What it does
- At sign-up·every form of The Newsletter Plugin verified: syntax, domain that receives mail, disposable mailbox, role address (info@, …); an unmistakable typo is corrected before the confirmation leaves, when in doubt the visitor reads «Did you mean …?», those who cannot receive mail are refused with a message
- On the subscribers you already have·choose which ones, from which list, in what order and how many: the unmistakable typo is corrected in the subscriber, the original stays with the outcome
- Where you see the outcomes·on the subscriber page; in Newsletter → RadarAddress, with the CSV export; in the list you choose, to exclude when you send a newsletter
- In the settings·in Newsletter → RadarAddress: the token of your account with «Verify and save», the sign-up and subscriber switches, typo correction (1-3), this month's usage
- If we do not respond·the sign-up goes through as usual, no message to the visitor
One example, as it came out of the engine:
- giulia.bianchi@gmial.com→giulia.bianchi@gmail.com
What it looks like
Three screenshots from the test site: the subscribers to verify, the form, the settings.



How to try it, in three steps
Install the plugin
Download the zip and upload it from Plugins → Add Plugin → Upload Plugin: it includes the thirteen languages and updates from our site. The Newsletter Plugin 9.5 or later is required.
Create the account and the token
The account is free, asks for no card and includes an allowance of operations every month: the token is created in one click and the steps are explained there.
Paste and verify
Newsletter → RadarAddress: paste the token, press «Verify and save» and try your subscription form. From then on every sign-up is verified; below you find the subscribers already in your lists, with the count before the button.
Have a prepaid code? Sign in to your account, open Enter a code from the menu, type the code and press “Continue”, then “Confirm and redeem”. The operations are added to your account straight away, at no charge, and work with the token you already have.
Requirements: WordPress 6.4, PHP 8.1, The Newsletter Plugin 9.5 or later. Interface in the thirteen languages of the site. The code is published under the GPL licence.
The plugin sends RadarAddress the email written in the form and those of the subscribers you choose to verify: nothing else. The privacy policy and the Terms apply; data stays in the European Union.
Frequently asked questions
Does it block the sign-up if the email is wrong?
A mailbox that cannot receive mail is refused with a message, and you can switch that off; a role address only if you choose so. An unmistakable typo is corrected; when in doubt the visitor reads «Did you mean …?»: if the same address is sent again, it stays as written.
Do I have to configure anything?
No: every The Newsletter Plugin form is verified as soon as you paste the token. There are no fields to choose.
Where do I see the outcome?
On the subscriber page, in Newsletter → RadarAddress with the latest outcomes and the CSV export, and in the list you choose for the addresses to check, which you can exclude when you send a newsletter.
Can I verify the subscribers I already have?
Yes: choose which ones, from which list, in what order and how many. Unsubscribed and bounced subscribers are left out, so you do not use up checks on people who no longer receive your emails.
Does it change the subscribers' email?
Only for an unmistakable typo in the domain. At signup the address is corrected before the confirmation leaves, and the confirmation page says so; in the bulk verification only if the option is on, and the original stays with the outcome.
How much does it cost?
The plugin is free. One light check is counted for every email verified. Every month the first 500 are free; beyond that, packs and monthly subscriptions on radaraddress.com.
What happens if RadarAddress does not respond?
The sign-up goes through as usual, with no message to the visitor, and the subscriber stays among those to verify.
Versions
- 1.0.0 — first release: email verified at signup (unmistakable typos corrected, a question when in doubt, mailboxes that cannot receive mail refused), subscribers already in your lists verified in bulk (which ones, from which list, in which order, how many), outcomes on the subscriber page, in a list of your choice and in the CSV export
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