People ask this in three different ways.
Below we answer each one, so you know exactly what is (and isn’t) possible today and after our API ships.
“Can I point my domain to ColdSend but send the mail from another platform?”
No. The moment you delegate your domain to ColdSend we host all authentication records (SPF, DKIM, DMARC) on our name-servers. Because the private DKIM keys never leave our environment, no external sender can sign mail on your behalf without breaking authentication.
If you need to split traffic, keep the domain at a neutral DNS host (Cloudflare, Namecheap, etc.) and add the records manually for each platform — exactly what ColdSend is designed to save you from.
**“Can I pipe ColdSend mailboxes (SMTP/IMAP) into Instantly, Smartlead, **Reply.io, etc.?”
Yes.
“Will the upcoming ColdSend API (Dec 2025) let me send through my ColdSend IPs from a different front-end?”
Yes, tentatively.