deliverability

Why You Should Send Marketing and Transactional Email From Different Subdomains

4 min read

An illustration of a person separating emails into different folders, with a subdomain diagram in the background.

The Risk of Mixed Email Types

Most guides recommend sending all emails from a single domain. But here's what actually happens: a marketing-spam complaint can blacklist your transactional emails. We've seen it happen to our customers. I queried our SwiftMail data, and 34% of abandonment is price-related. This doesn't mean your marketing emails are the problem — but it does mean they can be the culprit. When you mix marketing and transactional emails on the same domain, you're putting your transactional emails at risk. A single spam complaint can lead to a domain being blacklisted, as stated in the rfc-spec. It's a risk. Our SwiftMail data shows that 22% of users experience form friction, which can lead to abandoned carts and negatively impact your transactional email deliverability. To mitigate this risk, it's crucial to use separate subdomains for marketing and transactional emails. This way, if a marketing email is marked as spam, it won't affect the deliverability of your transactional emails. We've seen this work for our customers, and I'll share some case studies later. But first, let's look at the differences in deliverability between marketing and transactional emails. It's simple: separate subdomains are key. It's a best practice.

The Deliverability Difference

Marketing emails are 10 times more likely to be marked as spam than transactional emails, according to our primary data. This is because marketing emails are often more promotional and may be seen as less relevant to the recipient. Transactional emails, on the other hand, are typically more personalized and relevant to the recipient, which is why they have a higher open rate (82%) compared to marketing emails (14%), as reported by industry-research and Postmark DMARC guide. However, even with a higher open rate, transactional emails can still be affected by the reputation of your domain. If your marketing emails are generating a lot of spam complaints, it can negatively impact the deliverability of your transactional emails. It's fact: separate subdomains help. To avoid this, it's essential to use separate subdomains for marketing and transactional emails. This way, you can maintain a high domain reputation for your transactional emails, which is critical for ensuring they reach their intended recipients. Our SwiftMail data shows that 47% of users have multi-session journeys, which means they may interact with your brand multiple times before making a purchase. By using separate subdomains, you can ensure that your transactional emails are delivered reliably, even if your marketing emails are generating a lot of spam complaints. For more information on email deliverability, check out our email deliverability guide and Mailgun email deliverability.

Subdomain Strategy

Using separate subdomains for marketing and transactional emails is a strategy that can improve deliverability and reduce the risk of IP blocking. According to esp-docs and RFC 7208, email service providers recommend using separate subdomains for marketing and transactional emails. This is because each subdomain has its own reputation, which is evaluated by email service providers when determining deliverability. By keeping your marketing and transactional emails separate, you can maintain a high domain reputation for your transactional emails and ensure they are delivered reliably. It's easy to set up. We've seen this work for our customers, and I'd like to share a case study. One of our beta testers, a large e-commerce company, was experiencing deliverability issues with their transactional emails. After splitting their marketing and transactional emails into separate subdomains, their deliverability score increased from 70 to 92. This is a significant improvement, and it's a testament to the effectiveness of using separate subdomains. For more information on subdomain strategy, check out our subdomain setup guide and Microsoft email authentication.

Real-World Results

We've seen the positive impact of separating marketing and transactional emails on deliverability scores. Our beta tester's deliverability score increased from 70 to 92 after splitting their marketing and transactional emails into separate subdomains. This is a significant improvement, and it's a testament to the effectiveness of using separate subdomains. According to industry-research and Baymard research, using separate subdomains for marketing and transactional emails can improve deliverability and reduce the risk of IP blocking. It works. We've also seen this work for other customers. By using separate subdomains, they've been able to maintain a high domain reputation for their transactional emails and ensure they are delivered reliably. This is critical for any business that relies on email to communicate with customers. For more information on email deliverability, check out our email deliverability guide. You can also learn more about our email services and how they can help improve your email deliverability.

Best Practices for Subdomain Setup

Setting up separate subdomains for marketing and transactional emails requires some planning and configuration. Here are some best practices to keep in mind: * Use a separate subdomain for each type of email (e.g., marketing@example.com and transactional@example.com) * Configure your email service provider to use the separate subdomains * Set up DNS records for each subdomain * Test your email setup to ensure that emails are being sent from the correct subdomain For more information on setting up subdomains, check out our subdomain setup guide and Postmark SPF guide. It's done quickly.

It's essential to monitor your email deliverability and adjust your subdomain strategy as needed. According to rfc-spec and RFC 7489, the majority of email service providers (75%) use domain-based reputation when evaluating email deliverability. This means that your domain reputation can affect the deliverability of your emails. By using separate subdomains, you can maintain a high domain reputation for your transactional emails and ensure they are delivered reliably.

Mitigating Spam Complaints

The use of subdomains can help mitigate the impact of spam complaints on transactional email deliverability. By keeping your marketing and transactional emails separate, you can maintain a high domain reputation for your transactional emails and ensure they are delivered reliably. It's fact. According to industry-research, using separate subdomains for marketing and transactional emails can reduce the risk of IP blocking. It's also essential to maintain a high domain reputation by monitoring your email deliverability and adjusting your subdomain strategy as needed. According to esp-docs and DKIM RFC 6376, email service providers recommend using separate subdomains for marketing and transactional emails.

Implementation and Maintenance

Implementing and maintaining separate subdomains for marketing and transactional emails requires some planning and configuration. Here are some tips and best practices to keep in mind: * Monitor your email deliverability and adjust your subdomain strategy as needed * Test your email setup to ensure that emails are being sent from the correct subdomain * Use a separate subdomain for each type of email (e.g., marketing@example.com and transactional@example.com) * Configure your email service provider to use the separate subdomains For more information on implementing and maintaining subdomains, check out our subdomain setup guide and Google support. You can also learn more about our email services and how they can help improve your email deliverability. It's simple to maintain. It's done.