A cold outreach campaign lives or dies on the first send. Blast a list full of malformed addresses, disposable domains, and shared role inboxes and you'll rack up bounces and complaints that scorch your sender reputation for months. Pre-send hygiene is the cheapest deliverability insurance there is.
This workflow shows how to run a cold list through layered checks — syntax validation, disposable-domain removal, and role-address filtering — so only clean, deliverable addresses reach your sending tool.
The workflow
1
Validate syntax first
Run the list through the syntax checker to catch typos, missing @ signs, and malformed domains before anything else.
2
Drop disposable domains
Remove throwaway domains that bounce, complain, or act as spam traps.
3
Filter role-based addresses
Detect and remove shared inboxes like info@ and sales@ that generate complaints and low replies.
4
Deduplicate and export
Remove duplicates and export a clean CSV for your sequencing tool.
'/%3e%3ccircle%20cx='100'%20cy='100'%20r='84'%20fill='%23093e47'/%3e%3ccircle%20cx='100'%20cy='100'%20r='79'%20fill='url(%23teal)'/%3e%3cg%20transform='translate(55,55)'%20stroke='url(%23cmd)'%20stroke-width='11'%20fill='none'%20stroke-linecap='round'%20stroke-linejoin='round'%3e%3crect%20x='27'%20y='27'%20width='36'%20height='36'%20rx='5'/%3e%3ccircle%20cx='13.5'%20cy='13.5'%20r='13.5'/%3e%3ccircle%20cx='76.5'%20cy='13.5'%20r='13.5'/%3e%3ccircle%20cx='13.5'%20cy='76.5'%20r='13.5'/%3e%3ccircle%20cx='76.5'%20cy='76.5'%20r='13.5'/%3e%3c/g%3e%3c/svg%3e)