How does cold email impact warm email deliverability and sender reputation?

Email marketer from Sendinblue Blog explains that using the same domain for cold and warm emails can damage your sender reputation if your cold emails have low engagement (opens, clicks). This can lead to your warm emails being marked as spam.

Email marketer from Email Marketing Forum explains that if you're blasting out cold emails and people are marking them as spam, that's going to hurt your overall domain reputation, no matter how 'warm' your other emails are supposed to be.

Email marketer from Hunter.io Blog recommends separating your cold email activities from your warm email activities by using a separate domain and IP address. This will prevent any potential negative impact on your primary domain's reputation.

Email marketer from Reddit shares that sending cold emails from the same domain as your transactional emails is like playing Russian roulette with your sender reputation. One wrong move, and your transactional emails end up in the spam folder.

Email marketer from Woodpecker.co Blog shares that poor cold email practices, such as sending to unverified lists or ignoring unsubscribe requests, will damage your domain reputation and harm your ability to deliver both cold and warm emails.

Email marketer from Mailjet Blog explains that a damaged sender reputation due to poor list hygiene, high bounce rates, and low engagement from cold emailing can cause your legitimate 'warm' emails to be blocked or sent to the spam folder.

Marketer from Email Geeks explains that separating streams by subdomain on the same top-level domain only works to a certain extent. The same top level domain will bleed bad reputation into warm streams, especially with high-volume cold outreach. ISPs may punish both streams. Subdomains offer limited protection, and egregious cold outreach can affect shared IP structures. There's also a risk of ESP removal for sending cold email.

Email marketer from Neil Patel's Blog shares that sending unsolicited emails from the same domain or IP address as your 'warm' emails can negatively impact your sender reputation. ISPs may flag your domain as a source of spam, leading to deliverability issues for all your emails.

Expert from Spam Resource explains that if cold emails generate spam complaints, even legitimate 'warm' emails sent from the same infrastructure (domain/IP) will suffer deliverability issues, potentially landing in spam folders or being blocked outright.

Expert from Word to the Wise explains using a separate domain and IP address for cold email is the best practice to avoid damaging the reputation of your primary domain used for legitimate email. Shared infrastructure risks deliverability for both streams.

Expert from Email Geeks explains that if the same domain is used for cold and opt-in email, the cold email can degrade the reputation to the point where all mail from the domain goes to spam. Investigation involves looking at all platforms and doing inbox testing. For consumer domains, Google Postmaster Tools can be used to check domain reputation.

Expert from Email Geeks advises moving all cold email to its own Google account and domain and forcing sales to never mention the parent domain. Once done, rebuild the opt-in mail reputation. Reputation fixes won't work until the cold email issue is stopped.

Documentation from Microsoft 365 documentation explains that sending unsolicited commercial email (spam) can lead to IP address and domain blacklisting, negatively affecting your ability to send legitimate email.

Documentation from M3AAWG shares that volume of complaints impacts sending reputation. If people complain a lot they will filter or even block the mail based on volume and reputation.

Documentation from RFC documentation responds adhering to email best practices, including obtaining proper consent and avoiding spam-like content, is crucial for maintaining a positive sender reputation and ensuring deliverability.

Documentation from Google Postmaster Tools Help responds that sending unwanted mail affects your domain's reputation. A poor sender reputation may result in mail being delivered to the spam folder, or rejected completely.

Documentation from Spamhaus responds that sending spam, including cold emails that violate anti-spam policies, can lead to your IP address being listed on their blocklists, severely hindering your email deliverability across all email types.