The list contains purchased contacts

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Weโ€™ve said it once, and weโ€™ll probably say it 100 times more:ย ย is the elephant in the room for email marketing.

play a significant role in deliverability. And as far as blocklists are concerned, email content isnโ€™t the only factor determining if a domain is blocklisted.

In this post, weโ€™ll go over what a blocklist is, how domains end up on blocklists, how to delist a domain name, and some best practices to avoid landing on the blocklist.

What is a blocklist?

A blocklist is a collection of IP addresses, email addresses, or domains that have been flagged as sources of spam messages or harmful content. Email clients, email service providers (ESPs), and email serversย usually block messages from domains or addresses onย IP blocklists. Internet service providers (ISPs) sometimes prevent users from accessing blocklisted websites.

Some popular blocklists include:

  • Spamhaus
  • MXToolBox
  • Barracuda Reputation Block List (BRBL)
  • Spamcop
  • URIBL
  • Google Transparency Report
  • PhishTank

Email blocklists may also be referred to as blacklists. However, most of the email industry has ย to avoid unintentional negative connotations.

How do domains end up on blocklists?

The goal of a blocklist is to protect users against spammy, malicious, or harmful content. Here are some common reasons why a domain might land on the blocklist:

  • The domain is sending out spammy content.
  • The domainโ€™s subscribers have submitted spam complaints by marking the domainโ€™s emails as spam.
  • The domain is suddenly sending out a massive amount of emails.
  • Emails sent from the domain have a high bounce rate.
  • Users arenโ€™t engaging with emails Palestine Business Email List sent from the domain.

Keep in mind that blocklists can flag domains and email addresses with good intentions. Plenty of domains land on blocklists, even if theyโ€™re steps to avoid them. Luckily, blocklisting is usually temporary.

How do I know if my domain is on an email blocklist?

Running a domain blocklist check on your email or domain helps find whether your domain (or other domains in your message) is on a blocklist. You can run your domains manually through individual blocklists or save some time byย using a tool that checks your email against multiple blocklists at once.

In Email on Acidโ€™s Campaign Precheck, ย against four major blocklist services: Spamhaus, Phishtank, Google Transparency Report, and URIBL. Weโ€™ll let you know if your domains are on any blocklists.

Caption: Email on Acidโ€™s domain blocklist check, found in the Campaign Precheck QA feature. It looks like this email passed with flying colors. Hooray!

Email on Acidโ€™s tool helps you catch blocklistingย  UAE Cell Number issues before you send a campaign. But ย takes things a bit further with . You donโ€™t want to find out youโ€™ve been blocklisted right before you launch a big campaign, so our InboxReady suite is the perfect solution as it lets you keep tabs on multiple IPs at all times.

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