Email Sorter Ultimate: Bulk Email Address Sorter by MX Provider

Open Email Sorter Ultimate, load your list as a .txt, .xls and .csv file using "Open Email List," click "Start Task," and the software checks the MX record for every address automatically. Once sorting finishes, use "Save List" to export each provider group into its own file — no manual lookup or spreadsheet formulas needed.

Different providers handle incoming mail differently — what lands in a Gmail inbox doesn't always behave the same way on Office 365 or Yahoo. Sorting your list first lets you adjust sending volume and timing per provider, which generally improves deliverability compared to blasting one identical batch to every domain at once.

Email Sorter Ultimate recognizes 50+ major mail providers, including Gmail, Office 365, Outlook, Yahoo, AOL, iCloud, Yandex, GoDaddy, IONOS, AT&T, and Zimbra-hosted domains. If you use a provider that isn't built in yet, additional MX providers can be added on request.

An email sorter organizes addresses by where they're hosted; it doesn't check whether the address itself is real or active. A verifier does the opposite — it confirms deliverability but doesn't group by provider. Email Sorter Ultimate is purely a sorting tool, so many people pair it with a separate verifier for a complete list-cleaning workflow.

Yes — Email Sorter Ultimate can sort email addresses by domain as well as by MX provider, so you can group contacts by company or organization, not only by which mail service they use.

The domain name alone doesn't always tell you who actually hosts the mail — plenty of businesses use a custom domain (like you@yourcompany.com) while their email is really run through Office 365 or Google Workspace behind the scenes. Checking the MX record directly reveals the true host, which is why MX-based sorting is more accurate than guessing from the domain name.

Email Sorter Ultimate can load and sort 500,000 or more email addresses in a single batch, so even very large lists don't need to be split into smaller files before sorting.

A Zimbra Judger is a specialized detection feature built specifically to identify Zimbra-hosted email addresses, which are harder to distinguish through standard MX lookups than mainstream providers like Gmail or Outlook. Email Sorter Ultimate includes this built in, and it can be turned on or off depending on whether you need Zimbra-specific sorting for a given list.

Email Sorter Ultimate is a one-time $40 purchase for a lifetime license — there's no recurring subscription fee. Bulk pricing is available if you need multiple licenses, and a free trial download lets you test the full sorting process before you buy.