Key facts
- Fix the volume and the bounces first: send fewer per mailbox, check every address before sending and stop after a high bounce rate.
- Five causes come up most: volume, bounces, missing setup, heavy content and complaints.
- New mailboxes start at 5 a day and never exceed 20.
- Buzz checks email status before sending and skips addresses that fail.
What are the most common causes?
Five causes come up most: volume, bounces, missing setup, heavy content and complaints.
- Volume: a new mailbox sending dozens a day.
- Bounces: unchecked lists with dead addresses.
- Setup: no SPF, DKIM or DMARC on the sending domain.
- Content: several links, images, attachments or a heavy signature.
- Complaints: people marking it as spam because it was not relevant.
How does Buzz Send avoid these?
New mailboxes start at 5 a day and never exceed 20. Buzz checks email status before sending and skips addresses that fail. A mailbox pauses at a 5 percent bounce rate or after a spam complaint, and opt-outs are suppressed for good.
Should I use my main domain?
Many senders use a separate sending domain so problems do not affect everyday email. Buzzlist sets up domains and mailboxes as a separate purchase.
How to get cold emails out of spam
- Check your DNS records
SPF, DKIM and DMARC on the sending domain.
- Cut volume
Stay under about 20 a day per mailbox and ramp new ones slowly.
- Clean the list
Check every address and drop ones that fail.
- Strip the email
Plain text, one link at most, no images or attachments.
- Make it relevant
Send fewer, better targeted emails to cut complaints.
When does Buzzlist fit, and when does it not?
It fits when
- You want sending with these limits built in.
- You send to US businesses.
It does not fit when
- You want to send newsletters to subscribers. Use a newsletter tool.
Questions people ask next
Does warm-up fix spam on its own?
No. Volume, bounces and relevance matter just as much.
Does the email copy matter?
Yes. Plain text with one link at most and no attachments looks like a normal email.
What bounce rate is too high?
Buzz Send pauses a mailbox at 5 percent.
Do bounced contacts cost me?
On paid plans, a contact sent with Buzz Send that hard-bounces comes back to your balance once.
Sources
Checked October 9, 2026. Rules change, so read the source before you rely on it. This is general information, not legal advice.