Alternatives to Sender Score

Free web tool from Validity that rates the email sending reputation of an IP address or domain. The listings below can replace it for an important use case. Each note says what changes if you switch.

  • Sender Score

    Free web tool from Validity that rates the email sending reputation of an IP address or domain.

    FreeProprietaryWeb

Replacements

Listings that take over the same core job as Sender Score.

  • Spamhaus IP and Domain Reputation Checker

    Online lookup that shows whether an IP address or domain appears on Spamhaus blocklists.

    FreeProprietaryWeb

    Spamhaus IP and Domain Reputation Checker shows listings on Spamhaus blocklists rather than a reputation score, with no extra checks for bounces or subject lines.

  • Cisco Talos Reputation Center

    Online lookup for Cisco Talos reputation and threat intelligence on IP addresses and domains.

    FreeProprietaryWeb

    Cisco Talos Reputation Center shows Cisco's reputation view of an IP or domain, with disputes handled through a separate support site.

  • Barracuda Reputation Lookup

    Online lookup that checks whether an IP address or domain is listed in the Barracuda Reputation System.

    FreeProprietaryWeb

    Barracuda Reputation Lookup checks only Barracuda's own list, with a removal request form on the same site.

  • MXToolbox Blacklist Check

    An online tool that tests a mail server IP or domain against over 100 DNS blacklists.

    FreeProprietaryWeb

    MXToolbox Blacklist Check tests an IP or domain against over 100 DNS blacklists at once, but gives no reputation score or removal.

  • MultiRBL

    A free tool that checks a mail server IP against over 200 DNS blacklists and whitelists.

    FreeProprietaryWeb

    MultiRBL checks an IP against over 200 blacklists and whitelists with IPv6 support, without a score or removal help.

  • Google Postmaster Tools

    Google's web dashboard for checking a sending domain's reputation and mail deliverability to Gmail.

    FreeProprietaryWeb

    Google Postmaster Tools shows how Gmail rates your sending domain using data from Gmail itself, but needs a Google account and covers only Gmail.

  • Microsoft SNDS

    Microsoft portal that shows senders how Outlook.com rates mail coming from their IP addresses.

    FreeProprietaryWeb

    Microsoft SNDS gives Outlook.com reputation data for your IPs, requiring login and verified control of the IP ranges.

Similar software

Related functionality, not a direct replacement.

  • GlockApps

    An online email deliverability tester that checks inbox placement, spam scores, blocklists and domain authentication.

    FreemiumProprietaryWeb

  • Mail Tester

    A web tool that scores how likely an email is to be marked as spam.

    FreeProprietaryWeb

  • MXToolbox

    A web-based suite of DNS, MX, SPF, DMARC and blacklist lookups for diagnosing email delivery.

    FreemiumProprietaryWeb

  • Maileroo Mail Tester

    A free web tool that grades a test email for authentication, spam score, DNS and blacklists.

    FreeProprietaryWeb

  • Postmark Spam Check

    A free web tool and JSON API that returns the SpamAssassin score of an email message.

    FreeProprietaryWeb