What’s a realistic sustainable daily send volume per warmed B2B mailbox, including follow-ups?
I’m looking for some real-world input from people who have been running B2B cold email for a while.
I run a small B2B service business and use cold email for fairly targeted outreach. I’m contacting relevant people at companies using verified work emails, rather than blasting a huge scraped list.
I’m currently using Apollo for sequencing. My sending domain has already been warmed up and is in use, and I’m more interested in maintaining good deliverability long-term than pushing the absolute maximum volume.
What I’m trying to figure out is the realistic daily capacity of one mailbox once follow-ups are included.
For example, with a simple 3-touch sequence:
- Initial email
- Follow-up a few days later
- Final follow-up
If the recommendation is around 40–50 total sends per mailbox per day, and follow-ups count toward that number, then once the sequence is running at steady state, the number of new prospects you can actually add each day gets pretty low.
That’s the part I’m unsure about.
For those of you who have been doing this consistently for a few months or longer:
- Roughly how many total outbound emails do you send per mailbox per day?
- Does that number include follow-ups?
- How many new prospects are you typically adding per mailbox each day?
- How many touches do you normally use?
- Has anyone here sustainably run something closer to 70–100 total sends per mailbox per day without noticeably hurting deliverability?
- Do you use your main domain, a subdomain, or separate sending domains?
I’m not really asking what Gmail or Apollo technically allows. I’m more interested in what people have actually found sustainable over time while still getting good inbox placement.
Would appreciate hearing actual setups and longer-term experience.