Why was SendGrid's IP blocked by Spamhaus?

Email marketer from StackExchange comments that in the past, Sendgrid had issues with vetting their clients properly, leading to spammers using their platform. Although they've improved, the historical reputation lingers and can still cause deliverability problems.

Marketer from Email Geeks shares it's not just spamhaus blocking their IPs, and they aren't the only ESP falling into this category either and that "sick and tired" is probably the polite way to describe it.

Marketer from Email Geeks shares that she is 100% with Laura. She explains since the acquisition Sendgrid seems to have become another example of driving revenue being more important than driving the spammers and phishers away. Spamhaus is by far not the first blocklist they have landed on, it's just perhaps one of the most publicly visible.

Email marketer from Reddit shares, in short, Sendgrid had a period where they didn't enforce their acceptable use policies effectively, leading to spammers exploiting their services. Spamhaus, fed up with the volume of spam originating from Sendgrid IPs, added them to their blocklist as a measure to protect recipients.

Marketer from Email Geeks explains this idea of Sendgrid beeing loose on the enforcement isn't a good look and that most of us hear have heard stories and that people express hesitancy to sign up for Sendgrid because of this developing reputation, so they risk losing business from good senders. As a short term play, they're valuing cash flow now over a sustainable model, Once these ideas get out there, good senders stay away and bad senders flock there.

Email marketer from Email Geeks shares that she is 100% with Laura. She explains since the acquisition Sendgrid seems to have become another example of driving revenue being more important than driving the spammers and phishers away. Spamhaus is by far not the first blocklist they have landed on, it's just perhaps one of the most publicly visible.

Email marketer from Email Geeks explains this idea of Sendgrid beeing loose on the enforcement isn't a good look and that most of us hear have heard stories and that people express hesitancy to sign up for Sendgrid because of this developing reputation, so they risk losing business from good senders. As a short term play, they're valuing cash flow now over a sustainable model, Once these ideas get out there, good senders stay away and bad senders flock there.

Expert from Spam Resource explains the purpose of Spamhaus is to identify and block sources of spam. He says that they add IPs and domains to their blocklists when they find evidence of spamming activity. Sometimes ESPs are added to their lists when they allow spammers to flourish on their platform.

Expert from Word to the Wise explains that ESPs need to take responsibility for the mail that originates from their networks. They need to set and enforce appropriate policies and procedures for managing abuse. They also must carefully manage the reputation of their IPs.

Expert from Email Geeks explains that SendGrid IP was blocked because they’re allowing spammers to send spam off their network and not taking any action. She is with Spamhaus on this issue, even though she knows SendGrid is doing the best they can. She also added that even her direct emails to people at Sendgrid about abuse are disappearing.

Expert from Word to the Wise explains the importance of maintaining a good sender reputation. He says that bad sending practices such as spamming and not following best practices can lead to being blocked.

Expert from Email Geeks explains that SendGrid IP was blocked because they’re allowing spammers to send spam off their network and not taking any action. She is with Spamhaus on this issue, even though she knows SendGrid is doing the best they can. She also added that even her direct emails to people at Sendgrid about abuse are disappearing.

Documentation from Twilio SendGrid explains that blocklists, like Spamhaus, are real-time databases of IP addresses and domains that have been associated with spamming activity. Being listed on a blocklist can prevent your emails from reaching their intended recipients. They get listed for spam complaints, spam traps, or bad sending practices.

Documentation from SparkPost explains that IP reputation is a score assigned to an IP address based on its sending history. Poor IP reputation can lead to deliverability issues, including being blocklisted. Things that impact reputation are spam traps, complaints and low engagement.

Documentation from Spamhaus explains that their policy is to list IP addresses and domains that are involved in the sending, hosting, or promotion of spam. This includes ESPs that do not take adequate measures to prevent spammers from using their services.