Give your domain a break. Stop mass sending for

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Don’t use your main business domain for cold outreach. Create a new, similar domain (like getyourbrand.com instead of yourbrand.com) for prospecting. This protects your core brand in case something goes wrong.

Use tools like Mailwarm, Instantly, or Lemwarm to slowly warm up your domain. These tools simulate real interactions, which helps build a healthy sender profile.


Clean your prospect list before sending it. Verify each email to avoid high bounce rates.

Start with 20–30 emails a day and work your way up. Don’t exceed 150–200 emails per day per domain unless your reputation is strong.


Avoid spammy language and templates. If it looks like a mass email, it europe cell phone number list will likely be flagged. Personalization makes your email seem human and increases your chances of getting a response.


Here are some habits that can secretly hurt your sender score, even if everything seems fine on the surface:

If your emails are going to spam or not being delivered at all, here's how to start repairing the damage:


2. Focus on Highly Engaged Contacts
Start sending only to people who have recently opened or clicked on your emails. Their engagement will help rebuild your sender credibility.

3. Remove Risky AddressesClean your list thoroughly. Remove any invalid, inactive, or unverified contacts.

Review DNS SettingsDouble check your SPF, DKIM, and DMARC. Make sure they are configured correctly.