Suomispam Reputation Blacklist : Our guide (2025)

Suomispam Reputation can seem like a puzzle, sparking curiosity as more people want to understand it. Regardless of who you are, grasping how the Suomispam Reputation Blacklist works is crucial for making sure your emails reach their targets. 

➡️ What is the Suomispam Reputation Blacklist?
➡️ How to remove yourself from it?
➡️ What are the best practices to improve your email deliverability ?

Here is what you need to know !

What is the Suomispam Reputation Blacklist?

Reasons for Listing on the Suomispam Reputation Blacklist

The Suomispam Reputation Blacklist is a tool used to identify and categorize email domains and addresses with a poor reputation. This blacklist plays a vital role in maintaining email deliverability by preventing spam emails from reaching recipients' inboxes. 

Several key reasons can lead to an email domain being listed on this blacklist :

❌ Unsolicited bulk emails or spam : Senders often get listed due to sending unsolicited bulk emails or spam. If a domain frequently sends out emails that are marked as spam, it signals that the sender is not following best practices for email marketing and list management ;

❌ Spamvertised sites : Domains associated with spamvertised sites are also flagged. These sites hire third parties to send spam on their behalf, and the blacklist will include not only the spammer but also the redirectors and the target sites ;

❌ Escalation : High-volume spamming activity triggers escalation listings. When the volume of spam from a domain is exceptionally high (and so its Spam Score), it warrants an immediate and severe response to mitigate the impact on recipients ;

❌ Suspicious activity : Suspicious activity can lead to a domain being flagged. This includes behaviors that suggest a network is being used to send out spam, such as the use of snowshoe ranges or dirty IP ranges commonly linked to spam campaigns.

4 Major Factors Influencing Suomispam Reputation

Suomispam Reputation is shaped by several key factors, which span various categories and have been instrumental in defining email reputation from the start. 

1 - Sender Reputation

Your sender reputation is essential for Suomispam filtering. It helps email providers evaluate the trustworthiness and legitimacy of the sender. Here are some important aspects : 

➡️ Recipient Actions: Positive recipient actions, such as opening emails, clicking on links, and marking emails as "not spam," signal engagement and indicate that the sender is reputable. Low engagement and high spam complaints, on the other hand, can negatively impact reputation ;

➡️ Email Deliverability: A sender with a strong reputation is more likely to have their emails delivered to recipients' inboxes, whereas a sender with a poor reputation may struggle with deliverability issues (and even get listed on the RATS Spam Blacklist for example) ;

➡️ Expert Email Deliverability Solutions: Companies like MailReach specializing in email deliverability offer solutions and guidance to enhance sender reputation, ensuring better inbox placement and reducing the risk of being marked as spam. These solutions include best practices, technical optimizations, and reputation monitoring ;

➡️ Monitoring for Inactive and Spam Emails: Keeping an up-to-date email list is essential for maintaining a good sender reputation, because sending emails to inactive or flagged addresses can significantly damage your sender reputation.

2 - Content Quality

The quality and relevance of email content are pivotal to Suomispam Reputation. Consider the following points : 

➡️ Test the spamminess of your emails: Use the free email spam test of MailReach to look for spammy elements in your emails. Links, images, tracking, email signatures, phone numbers can put you in spam. 

➡️ Content Relevance: Sending emails tailored to recipients' interests and preferences improves engagement and reduces the likelihood of being marked as spam. Personalization, targeted messaging, and segmenting email lists based on recipient preferences can enhance content relevance, while for example the '550 5.7.350 Remote server returned message' error is a standardized response code generated by email servers to indicate a specific issue with the delivery of an email.

3 - SPF, DKIM, DMARC, and Authentication

Authentication protocols play a crucial role in verifying the sender's identity and improving email reputation : 

➡️ SPF (Sender Policy Framework): SPF is a DNS record that verifies whether the sender is authorized to send emails from a specific domain. This adds a layer of authentication that helps prevent spoofing and enhances the sender's reputation ;

➡️ DKIM (DomainKeys Identified Mail): DKIM uses digital signatures to verify the integrity and authenticity of emails. Implementing DKIM can improve reputation and reduce the risk of emails being flagged as spam ; 

➡️ DMARC (Domain-based Message Authentication, Reporting, and Conformance): DMARC builds on SPF and DKIM, providing guidelines on how email receivers should handle messages that fail authentication checks. Implementing DMARC policies can protect the sender's reputation and prevent email abuse.

If you’re listed on Suomispam Reputation, run a free spam test now

If you discover that your email domain is listed on the Suomispam Reputation Blacklist, you need to check where your emails are actually landing. Major email providers like Google and Microsoft don't rely heavily on external blacklists to determine email placement. The most important factor is testing your email deliverability to get a clear picture.

💡 Whether or not you’re blacklisted, what truly matters is where your emails end up in your recipients' inboxes. Everything else is secondary!

To understand how well your emails are performing and to make necessary adjustments, you need to evaluate your deliverability. Not all tools are created equal for this purpose. That’s where MailReach's Free Email Spam Test stands out. Unlike other tools that might be inaccurate or biased, MailReach provides an exact measurement of your inbox placement.

All you have to do is send an email (just as you normally would) to a list of 31 different inboxes provided by MailReach. Then, wait for the comprehensive report on your deliverability.

You’ll receive a score out of 10 and a detailed analysis covering everything from content and spam words to links, tracking, and even blacklist status.

It's the perfect way to ensure your emails are reaching their intended destinations and not getting lost in spam folders!

How to get rid of Suomispam Reputation Blacklist?

How to Check if Your IP is Blacklisted by Suomispam?

To check if your IP is blacklisted by Suomispam, you can utilize online blacklist checker tools. These tools provide quick and easy verification of your IP status. Another method is to monitor your server logs for any signs of unusual activity, which can indicate that your IP might be flagged.

You can also reach out to your service providers, which can offer valuable insights into your IP's reputation. They can often provide detailed information and assist in identifying any issues.

✅ Being aware of your IP's status is important in order to maintain a good online reputation and ensuring the smooth operation of your email campaigns !

Steps to Request Delisting from Suomispam

Being listed on the Suomispam Reputation Blacklist indicates that your IP address has been flagged for sending spam, malware, or engaging in cyber attacks. If you suspect that your IP address is listed, it’s important to verify its status :

➡️ Delist Request : To request removal from the blacklist, you need to present a detailed and thorough explanation of your case. The Suomispam Reputation Blacklist requires a comprehensive account of why your IP should be delisted. Without a full and clear explanation, your request will not be considered ;
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➡️ Whitelist Request : It's important to note that the Suomispam Reputation Blacklist does not maintain a whitelist. If your entire network is listed, the chances of immediate removal are slim. Often, the issue resolves itself once the source of the spam moves to another network ;
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➡️ Request to Delist Domain : If you believe that the reason for your domain being listed is no longer applicable, you can request its removal. Before submitting your request, check the Suomispam Reputation Blacklist site to confirm that your domain is listed. Keep in mind that this preliminary step ensures that your request is necessary and relevant!

Best Practices for Email Senders

1 - Choose the right Domain and Extension (TLD)

Your email domain serves as your online identity, and picking the right one is crucial for email deliverability.

Selecting a reputable domain extension, such as ".com" or country-specific ones like ".co.uk," enhances trust and credibility with both recipients and email service providers.

These well-known extensions are less likely to trigger spam filters compared to obscure or unusual extensions like ".xyz" or ".biz." By steering clear of dubious domain choices, you set a strong foundation for effective email delivery!

2 - Set up SPF, DKIM, and DMARC Records

Implementing sender authentication protocols such as SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication, Reporting, and Conformance) can ensure the legitimacy of your emails.

SPF specifies which IP addresses are authorized to send emails on behalf of your domain, DKIM attaches a digital signature to your emails to confirm their authenticity, while DMARC provides guidelines on how to handle emails that fail these authentication checks.

Correctly setting up these records not only enhances your email deliverability but also safeguards your domain against spoofing and malicious use. And that’s it!

3 - Utilize a Custom Tracking Domain

Incorporating tracking pixels into your emails through an email automation tool is a common practice to monitor recipient engagement. However, relying on a shared tracking domain provided by the service can lead to unforeseen drawbacks.

Establishing your custom tracking domain offers several benefits. At first, it distinguishes your email performance metrics from those of other users of the same service, mitigating the possibility of being linked to any unfavorable sending practices.

This segregation not only bolsters your email reputation but also guarantees precise tracking of your campaigns' effectiveness!

4 - Send Cold Emails from Trusted Inboxes (For B2B)

The credibility of your email sender status is paramount in dictating deliverability. Renowned email service providers such as Google Workspace, Office 365, and Zoho have solidified their positions as trusted sources. 

Consequently, emails originating from these platforms are more apt to reach recipients' inboxes.

If you target personal inboxes and do B2C campaigns, consider Brevo. 

5 - Limit Cold Email Volume (B2B use case)

How many cold emails to send per day ? Determining the optimal quantity of cold emails to dispatch daily is critical for safeguarding your sender reputation and sidestepping spam classification.

Flooding recipients' inboxes with an excessive number of cold emails within a short timeframe can trigger alarm bells with email service providers, potentially leading to your messages being marked as spam.

By imposing a reasonable sending threshold, such as limiting it to 150 emails per day per inbox, you showcase prudent email practices and uphold your deliverability rates.

6 - Embrace Email Warm-Up

Email gradual introduction is a proactive tactic aimed at steadily establishing and preserving a favorable sender reputation. This method entails progressively escalating the volume and frequency of your email transmissions over time to familiarize email service providers with your sending behavior and cultivate trust.

You must know that a thorough gradual introduction process primes your email accounts for effective campaign deployment, and also reduces the likelihood of tripping spam filters and ending up in recipients' spam folders!

Discover the best email warmup tool for a perfect deliverability

7 - Regularly Test Your Deliverability

Maintaining a good email deliverability demands persistent scrutiny and adaptation.

Resources such as MailReach's Free Email Spam Test furnish invaluable intelligence regarding your emails' efficacy across prominent internet service providers.

By routinely assessing your deliverability, you acquire visibility into any impediments impacting your inbox placement. Then, armed with this knowledge, you can proactively implement remedial actions, thereby optimizing your email delivery rates and fostering recipient engagement.

8 - Personalize everything

Personalization is key. It extends beyond merely incorporating a recipient's name into the email, it entails tailoring your messaging to resonate with each individual recipient and cultivate authentic connections.

So, when you segment your email list according to demographic, behavioral, or transactional insights, you can devise bespoke content that directly addresses each recipient's interests, requirements, and inclinations.

This approach not only heightens the probability of engagement but also diminishes the likelihood of your emails being dismissed as generic or spam-like!

9 - Avoid using Spam Words

The choice of language and tone in your email correspondence is another key factor over both recipient perception and email filtering mechanisms.

To uphold a favorable sender reputation and optimize your email deliverability, it's imperative to avoid spam words and confrontational language. Instead, prioritize articulate, succinct, and professional communication that enriches the recipient's interaction.

10 - Include an easy-to-spot Unsubscribe link in your emails

Last step : incorporate a conspicuous and readily available opt-out link in your emails! It isn't just a legal obligation mandated by regulations like the CAN-SPAM Act; it's also a cornerstone of maintaining sender integrity and nurturing favorable recipient connections.

By acknowledging recipients' choices and facilitating their ability to unsubscribe from future correspondence, you exhibit regard for their privacy and preferences.

Moreover, integrating an opt-out mechanism diminishes the probability of recipients flagging your emails as spam, thereby averting potential repercussions on your sender reputation and delivery rates. Your recipients will thank you!