Sending capacity calculator

Enter the number of cold emails you want to send each day. We work out how many sending domains and mailboxes that takes, and how many to put on each domain so one blacklisting cannot take out your whole setup. Then we walk the warm-up week by week: new domains send nothing real for their first weeks, each mailbox starts low and earns more volume every healthy week, and warm-up mail counts against what each domain can carry. You see the day you first send real email, the day you reach your target, and what your setup sends at every step along the way. If your domains are already a few months old, or you run warm-up at a different level, enter that too.