A step-by-step guide to warming up a new email domain: cold-email infrastructure, SPF/DKIM/DMARC, a 4-week warmup schedule, top tools, and fixing spam issues.
Email outreach can only succeed if your emails reach the inbox. You may spend time writing good subject lines and valuable messages or building a proper list of contacts but none of these will give you results if your emails are getting into spam folders. This is a common problem for businesses that often send emails from a new domain without proper preparation.
Mailbox providers such as Google and Outlook carefully check the history of activity for all the accounts. A new domain does not have a history of actions and its credibility is built through current activities. Sending a large number of emails when the domain is new into the activity can put this credibility into risk.
Email domain warmup is the process of building that trust gradually. It helps email providers recognize your domain as reliable and credible because it manages the activity of the new domain in a consistent and gradual strategy. In this guide, you will learn how to warm up an email domain to improve your sender reputation, and increase the number of successful emails.
Cold Email Infrastructure Setup
A proper email setup is essential for you to begin warming up your domain. Even well-written emails may cannot reach the inbox successfully without a right foundation.
Buying a Separate Domain:
Many businesses use a separate domain for cold outreach instead of their main business domain. This helps protect the reputation of the primary domain.
Authentication
You should set up the required authentication tools for emails like SPF, DKIM, and DMARC. SPF checks which mail servers should send emails for your domain. DKIM gives a digital signature that confirms the email has not been changed in the process and DMARC helps the receiving email providers in managing the mails that have failed SPF or DKIM tests.
Verification:
You should always check whether everything is working properly. Email warmup tools such as Mail-Tester or MXToolbox review your set up and you can fix any issues before sending your first email. A proper setup improves your deliverability and the warmup process.
What is Email Warmup and Why is it Mandatory?
Email warmup is the process of gradually increasing the number of emails that are being sent from a new account. The objective is to send emails consistently that helps email providers recognize the account as trustworthy so that mail providers do not see any doubtful activity within the domain. This actually shows that the emails are sent by a real person instead of sending large amounts of unwanted email.
Email providers carefully check the pattern of sending the emails. A new account that starts sending a lot of emails can risk the reputation of the domain and as a result, emails will be filtered into the spam folder.
A successful warmup improves your sender reputation and increases the success of your emails. It also supports better deliverability, engagement, and reliable response from your email outreach.
The Blueprint: Automated Email Warmup Schedule
You can warm up an email account by sending messages manually to credible contacts from which you will receive genuine replies. This may work while sending a small number of emails because it takes time and it is difficult to manage when the number of the emails increases. An automated email warmup process, provided by platforms like MailOptimal, makes the task easier by sending emails consistently and helps in getting natural responses. It maintains an uniform sending pattern that reduces the effort of managing the process.
The table below shows a simple four week warmup plan that gradually increases daily email volume.
| Week | Daily Sent Volume | Target Engagement (Replies) | Focus Area |
|---|---|---|---|
| Week 1 | 1 to 5 emails | 40 to 50% reply rate | Begin with a small number of emails and focus on genuine conversations. |
| Week 2 | 10 to 20 emails | 30 to 40% reply rate | Increase the number of emails gradually and use different email formats. |
| Week 3 | 25 to 40 emails | 25 to 30% reply rate | Gradually increase the number of emails while maintaining regular replies and conversations. |
| Week 4 | Up to 50 emails | 20 to 25% reply rate | Reach you’re the number of emails that you planned to send and prepare the account for better outreach. |
Top Tools to Automate the Process
Email warmup makes the process of establishing a sender reputation simple. Instead of sending and managing emails manually, these tools automate important activities such as sending messages, opening emails, giving replies, and identifying spammed emails. This creates a consistent pattern of sending that helps your domain improve email deliverability.
- MailOptimal: MailOptimal provides automated tools for warmup, analysing deliverability and inbox placement as part of a complete outreach platform.
- Instantly.ai: Instantly.ai combines email warmup with email management and performance analysis. (See how it stacks up: MailOptimal vs Instantly.)
- Warmup Inbox: Warmup Inbox improves the reputation of the sender through automatic email activity.
- Lemwarm: Lemwarm, developed by Lemlist, is known for helping users in building a credible network of warm leads.
If you have a limited budget, you do not have to buy a plan as many platforms have free plans by which you can test their features before subscribing. These options are useful for learning how email warmup works and for preparing a small number of email accounts without a high cost.
How to Fix Email Going to Spam
If your emails reach the spam folder, you should take measures to protect the reputation of the Platform. Firstly, you should stop the active cold emails and continue just with the email warmup process so that your account maintains a consistent performance.
You can increase the warm-up activity with your warm-up tool to focus more on replies and delivering successful emails. Finally, check whether your domain or sending IP address has been b email blacklisted by any account. If it has been blocked or blacklisted, you should follow the removal process provided by the service. Afterwards, you can restart your outreach only after your email performance and deliverability have returned to normal.
Conclusion
Email domain warmup is an important step for successful email outreach. It helps the email providers to consider your domain as credible ans safe. By setting up your domain correctly and increasing your email activity gradually, you build a strong reputation of your platform that supports a sustainable performance in email.
Frequently Asked Questions
1. How long does it take to fully warm up a new email domain?
A new email domain usually needs three to four weeks to build a reliable sending reputation.
2. Can I use a free email warmup tool, or should I pay for one?
The free plan is a good way to understand how email warmup works. It is suitable for testing a small number of email accounts, but if you plan to develop a proper cold email set-up, a paid warmup tool is a better choice because it provides better features.
3. How do I check my sender reputation?
Sender reputation shows whether the email providers can trust your domains. You can review it using tools such as Google Postmaster Tools or Cisco Talos.
4. I already started sending cold emails, and they are going to spam. How can I fix this?
You should stop your cold email campaigns and continue your email warmup process. Check whether your domain has all the necessary protocols for security.
5. Should I warm up my primary business email domain?
It is better not to use your primary business domain for cold emails because it can risk the reputation of your primary and the only domain.
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