Help CenterEmail DeliverabilityWhy Cold Emails Aren’t Always a Warm Strategy

Why Cold Emails Aren’t Always a Warm Strategy

Last updated November 19, 2025

Cold emailing is a common outreach method used by sales, marketing, and business development teams. However, it also comes with compliance, deliverability, and reputation risks that organisations must understand before using it. This article explains what cold emailing is, why teams use it, its limitations, and situations where it should be avoided.

What Is Cold Emailing?

Cold emailing refers to sending an unsolicited email to someone with whom your organisation has had no prior interaction or relationship. Examples include:

  • Reaching out to a prospect who has never visited your website
  • Contacting someone whose email was sourced through third-party data providers
  • Emailing decision-makers without prior opt-in or consent

Cold emails are different from permission-based email marketing, where recipients have explicitly subscribed or provided consent. Many email regulations treat cold emailing more stringently because the recipient did not opt in.

Benefits of Cold Emailing

Although not always recommended, cold emailing does have some advantages when used responsibly and within compliance boundaries:

1. Cost-Effective Outreach Email is a low-cost communication channel compared to traditional advertising or outbound calling.

2. Scalable and Broad Reach Cold email campaigns allow teams to reach a wider audience quickly, especially in B2B outreach.

3. Direct Access to Decision-Makers It can enable direct communication with founders, managers, and leaders who may be difficult to reach through other channels.

4. Personalisation Opportunities Cold emails can be tailored with information about the recipient’s role, company, or challenges, improving engagement.

5. Easy to Measure and Optimise Open rates, replies, link engagement, and follow-up sequences can be analysed to refine outreach strategies.

Drawbacks and Risks of Cold Emailing

Cold emailing also carries significant operational and compliance risks that teams must consider before adopting it.

1. Low Engagement Rates Because the recipient did not expect your email, responses are often minimal.

2. Spam and Deliverability Risks Unsolicited outreach, especially when sent at scale or to unverified lists, can lead to:

  • Spam complaints
  • Poor domain reputation
  • Emails landing in spam folders
  • Potential blacklisting by email service providers

3. Legal and Regulatory Challenges Regions such as the EU (GDPR), Canada (CASL), and the U.S. (CAN-SPAM) impose strict rules on unsolicited commercial communication. Non-compliance may result in penalties or a negative compliance score.

You can learn more about regulatory requirements here:  Email Regulations Overview (Mailmodo guide) 

4. Higher Effort When Done Properly Effective cold outreach requires:

  • Accurate data
  • Manual research
  • Message customisation
  • Continuous testing

Without these, performance is usually poor.

5. Potential Negative Brand Perception Poorly crafted cold emails may be viewed as intrusive or spammy, harming your organisation’s reputation.

When Cold Emailing Should Be Avoided

Cold emailing may not be the right strategy in the following scenarios:

1. When Consent Is Required (Regulatory Restrictions) If your target region requires explicit opt-in for marketing (e.g., GDPR), cold emailing poses compliance risks and should be avoided.

2. If You Don’t Have a Strong Value Proposition Generic outreach leads to low engagement and may damage brand trust.

3. When Sender Reputation Is Weak New domains, un-warmed sending IPs, or unverified lists increase spam risk significantly.

4. When Using Purchased or Scraped Lists These lists often contain outdated or invalid data, increasing bounce rates and legal exposure.

5. When Cold Email Is Used as the Primary Strategy Cold outreach should complement—not replace—other channels such as inbound marketing, social engagement, or content-driven lead generation.

Best Practices If You Choose to Use Cold Emailing

If your organisation decides to use cold emailing, follow these recommended practices:

  1. Use verified, permission-safe contact data
  2. Avoid purchased lists
  3. Personalise messages based on the recipient’s context
  4. Provide a clear opt-out or unsubscribe option
  5. Warm up your sending domain before bulk sending
  6. Monitor spam complaints, bounce rates, and engagement metrics
  7. Comply with regional email regulations
  8. Limit sending volume to maintain deliverability

Summary

Cold emailing can be an effective outreach strategy, but it requires careful compliance, thoughtful execution, and continuous monitoring. Organisations should weigh the potential benefits against the deliverability, legal, and reputation risks involved. In many cases, focusing on permission-based email marketing or inbound strategies may provide safer and more sustainable results.

If you need help understanding regulatory requirements or best practices for compliant email communication, feel free to explore our additional guides or reach out to our support team.

Was this article helpful?