Blog · topic
sending
4 posts
deliverabilitysending 8 min read
An open source cold email and warmup platform: what self-hosting actually gives you
Warmbly is Apache 2.0 cold email plus warmup you can self-host. What running it yourself means for IPs, workers, and your data, and when cloud is the better call.
sendingdeliverability 7 min read
How many cold emails can you actually send per day?
The safe number is per mailbox, not per account: 50/day default, 100 hard max, a 600s gap between sends. Here is the math to plan any daily volume.
sendingdeliverability 8 min read
How many mailboxes and domains do you need for the volume you want?
Planning cold email volume comes down to per-mailbox budgets. Work backward from your daily target to the mailboxes, domains, and IP spread you actually need.
sendingdeliverability 3 min read
Your send limit is a mailbox budget, not a server setting
People keep asking us to raise their daily limit. The honest answer is that the limit they are asking about does not exist.
Nothing matches that search.
Try a different word, or clear the field.
Send cold email people actually open.
Connect a mailbox, warm it up, send your first campaign today.