--- title: How to prevent a recipient from getting the same email twice description: Email authentication changes coming in February 2024 There’s a crucial update coming our way in February 2024 from Gmail and Yahoo! regarding email authentication. From this time, both companies have --- [Skip to content](https://help.prowly.com/how-can-i-prevent-recipient-from-receiving-the-same-email-twice#main-content) - [English](https://help.prowly.com/how-can-i-prevent-recipient-from-receiving-the-same-email-twice) - [Polski](https://help.prowly.com/pl/jak-zapobiec-by-ten-sam-email-nie-trafił-dwukrotnie-do-jednego-odbiorcy) English Show submenu for translations [Customer portal](https://help.prowly.com/customer-portal?hsLang=en) ![](https://help.prowly.com/hubfs/prowly-logo-3.svg) Open main navigation Close main navigation - - [English](https://help.prowly.com/how-can-i-prevent-recipient-from-receiving-the-same-email-twice) - [Polski](https://help.prowly.com/pl/jak-zapobiec-by-ten-sam-email-nie-trafił-dwukrotnie-do-jednego-odbiorcy) English Show submenu for translations - [Customer portal](https://help.prowly.com/customer-portal) - [Prowly.com](https://prowly.com/) [Prowly.com](https://prowly.com/?hsLang=en) Advice and answers from the Prowly Team - There are no suggestions because the search field is empty. 1. [Help Center](https://help.prowly.com/?hsLang=en) 2. [Send email pitches](https://help.prowly.com/send-email-pitches?hsLang=en) 3. [Optimizing recipient lists](https://help.prowly.com/send-email-pitches?hsLang=en#optimizing-recipient-lists) # How to prevent a recipient from getting the same email twice **Email authentication changes coming in February 2024** There’s a crucial update coming our way in **February 2024** from [Gmail](https://blog.google/products/gmail/gmail-security-authentication-spam-protection/) and [Yahoo!](https://blog.postmaster.yahooinc.com/post/730172167494483968/more-secure-less-spam) regarding email authentication. From this time, both companies have required bulk senders to authenticate their email domains. This means that starting February 2024, it is **mandatory to authenticate your domain in Prowly in order to continue sending emails through our platform**. For detailed instructions on how to authenticate your domain in Prowly, please refer to our [Help Center article](https://help.prowly.com/domain-authentication?hsLang=en). When you create an email in Prowly, there is a chance that the same journalist might be in more than one list or filter you have selected for the final recipient list.  ![media database jeremy clarkson](https://help.prowly.com/hs-fs/hubfs/Help/Media%20database/media%20database%20jeremy%20clarkson.png?width=590&name=media%20database%20jeremy%20clarkson.png) Let's assume you have added **Jeremy Clarkson** from Prowly's [Media Database](https://database.prowly.com/) to your three media lists: British Journalists, Automobiles Journalists & VIPs. When you distribute an email with all these lists included in the final recipient list, Prowly will prevent you from sending your message twice to the same contact. Then, there is no way that **Jeremy Clarkson** will be spammed with 3 emails with the same content at the same time.   **Important note**: When you import your own contacts to Prowly, we also highlight duplicated email addresses to prevent you from having identical media contacts in the database. However, you need to remember that if you have one journalist with two different email addresses in the CRM, these contacts differ from each other and naturally each will receive an email when being included in the final recipient list.   - [Write press releases](https://help.prowly.com/write-press-releases?hsLang=en#main-content) - [Guide to creating press releases with Prowly](https://help.prowly.com/write-press-releases?hsLang=en#guide-to-creating-press-releases-with-prowly) - [Writing and enriching press releases](https://help.prowly.com/write-press-releases?hsLang=en#writing-and-enriching-press-releases) - [Changing press release settings](https://help.prowly.com/write-press-releases?hsLang=en#changing-press-release-settings) - [Optimize newsroom](https://help.prowly.com/optimize-newsroom?hsLang=en#main-content) - [Newsroom configuration](https://help.prowly.com/optimize-newsroom?hsLang=en#newsroom-configuration) - [Adding and managing newsroom content](https://help.prowly.com/optimize-newsroom?hsLang=en#adding-and-managing-newsroom-content) - [Storing files and visuals](https://help.prowly.com/optimize-newsroom?hsLang=en#storing-files-and-visuals) - [Manage contacts](https://help.prowly.com/manage-contacts?hsLang=en#main-content) - [Using PR CRM](https://help.prowly.com/manage-contacts?hsLang=en#using-pr-crm) - [Managing contacts](https://help.prowly.com/manage-contacts?hsLang=en#managing-contacts) - [Protecting personal data](https://help.prowly.com/manage-contacts?hsLang=en#protecting-personal-data) - [Tags](https://help.prowly.com/manage-contacts?hsLang=en#tags) - [Send email pitches](https://help.prowly.com/send-email-pitches?hsLang=en#main-content) - [Guide to sending email pitches](https://help.prowly.com/send-email-pitches?hsLang=en#guide-to-sending-email-pitches) - [Verifying email addresses](https://help.prowly.com/send-email-pitches?hsLang=en#verifying-email-addresses) - [Creating new email](https://help.prowly.com/send-email-pitches?hsLang=en#creating-new-email) - [Optimizing recipient lists](https://help.prowly.com/send-email-pitches?hsLang=en#optimizing-recipient-lists) - [Writing email content](https://help.prowly.com/send-email-pitches?hsLang=en#writing-email-content) - [Sending emails](https://help.prowly.com/send-email-pitches?hsLang=en#sending-emails) - [Email academy](https://help.prowly.com/send-email-pitches?hsLang=en#email-academy) - [Domain authentication](https://help.prowly.com/send-email-pitches?hsLang=en#domain-authentication) - [Find new media contacts](https://help.prowly.com/find-new-media-contacts?hsLang=en#main-content) - [Guide to finding new media contacts with Prowly](https://help.prowly.com/find-new-media-contacts?hsLang=en#guide-to-finding-new-media-contacts-with-prowly) - [Using Media Database](https://help.prowly.com/find-new-media-contacts?hsLang=en#using-media-database) - [Contact and export limits](https://help.prowly.com/find-new-media-contacts?hsLang=en#contact-and-export-limits) - [Media Monitoring](https://help.prowly.com/media-monitoring?hsLang=en#main-content) - [Guide to Media Monitoring](https://help.prowly.com/media-monitoring?hsLang=en#guide-to-media-monitoring) - [Browsing and filtering articles](https://help.prowly.com/media-monitoring?hsLang=en#browsing-and-filtering-articles) - [Dashboards and widgets](https://help.prowly.com/media-monitoring?hsLang=en#dashboards-and-widgets) - [Email notifications](https://help.prowly.com/media-monitoring?hsLang=en#email-notifications) - [Analyze PR performance](https://help.prowly.com/analyze-pr-performance?hsLang=en) - [Manage your account](https://help.prowly.com/manage-your-account?hsLang=en#main-content) - [Security and legal](https://help.prowly.com/manage-your-account?hsLang=en#security-and-legal) - [Connected inbox](https://help.prowly.com/manage-your-account?hsLang=en#connected-inbox) - [Subscription and payments](https://help.prowly.com/manage-your-account?hsLang=en#subscription-and-payments) - [Teamwork](https://help.prowly.com/manage-your-account?hsLang=en#teamwork) - [PR Reports](https://help.prowly.com/pr-reports?hsLang=en) [![Chill listening crop-3](https://help.prowly.com/hubfs/prowly-logo-3.svg "Chill listening crop-3")](https://help.prowly.com/?hsLang=en) Help Center Copyright © 2026, Prowly | part of Semrush Inc.