u/Medical_Sorbet_6615

I’m setting up cold outreach for a small B2B service business and would appreciate advice from people who have actually done this at scale.

I’m planning to send around 20 highly targeted emails per day to relevant organisations. The emails will be personalised rather than mass/bulk spam.

My question is whether I should:

Use my main business domain, which is also used for my website and normal business/client communication; or
Buy a closely related secondary domain and use that exclusively for cold outreach.

My thinking is that a separate domain would protect the reputation of my main domain if the outreach generates spam complaints or deliverability problems.

The downside is that a second domain could potentially look less trustworthy, particularly if prospects check the domain.

For those who do B2B cold email:

What would you do at only ~20 emails/day?

Is a separate domain actually worthwhile at this volume?

Does using a secondary domain negatively affect trust/reply rates?

Would you warm up the secondary domain/mailbox, or just gradually increase legitimate sending?

At what volume would you consider a separate outreach domain essential?

Interested in practical experience rather than generic “cold email is dead” advice.

Hi all,

Starting a consultancy - my client targets are public sector in the UK (Councils, NHS, Police forces, Education). I have already compiled a lead list of 1000 shared mailboxes.

I have already set up SPF, DKIM and DMARC (reject). I am using MS 365 as my business email.

1. I have been sending daily emails to my personal gmails and hotmails and replying back. Is there anything else I should do to warm up the account?

I don’t intend on doing my out reach until March 2027 so I have some time.

1. Should I send out reach from personal corporate domain email or should I add shared mailbox and do it from there. Do I have to warm both emails or is it the domain itself that builds overall reputation?
2. What is the best way to bulk send my out reach free of charge. Mail merge? I am just testing the waters with this consultancy business.