Best of the inbox: cold and bulk are different sports

Best of the inbox: cold and bulk are different sports
Mixing cold-outreach tactics with bulk-marketing infrastructure burns domains fast. The resources that draw the line clearly.

✉️ Cold
— A 'separate sending domain' walkthrough — never run cold outreach on your money domain; subdomain or buy a throwaway. Picked because this single move prevents most catastrophes.
— Instantly/Smartlead deliverability docs on inbox rotation — how cold senders spread volume; useful even if you only do bulk.

📣 Bulk
— CAN-SPAM vs consent comparison — cold implied-consent rules differ from bulk opt-in; getting it wrong is a legal line, not a deliverability one.
— A subdomain reputation-isolation guide — protect the root domain from any single channel's mistakes.

Saved you ~2 hours and possibly one domain. The rule across all four: never let cold volume touch the domain your real list depends on.