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Mailbox Infrastructure

11 articles

What is Icemail? OutreachFox's built-in mailbox marketplace

Icemail is the domain and mailbox marketplace built into OutreachFox. You use it to buy sending domains, buy mailboxes on those domains (Google, Microsoft, IMAP/SMTP or Azure), and manage your whol…

How Icemail automates SPF, DKIM and DMARC — and replaces mailboxes for free

When you buy a domain and mailboxes through Icemail, the platform writes the email authentication records for you and lets you swap out a damaged mailbox at no cost. This article explains what happ…

Buy a domain through Icemail from inside OutreachFox

You can register new sending domains without leaving OutreachFox. Icemail buys the domain, sets up its DNS and makes it ready for mailboxes in one step.

Buy mailboxes through Icemail (Google, Microsoft, IMAP/SMTP, Azure)

Once a domain is in Icemail, you add mailboxes to it. You pick the provider, set the quantity and check out. Icemail creates the accounts and configures authentication for the provider you chose.

Import your Icemail mailboxes into OutreachFox

Mailboxes you buy in Icemail do not appear in OutreachFox automatically. You import them once with Import from Icemail, then enable warm-up. No client IDs, app passwords or SMTP settings are needed.

Set up a custom tracking domain

A custom tracking domain replaces the shared tracking link in your emails with a subdomain you own (for example link.yourdomain.com). Open and click tracking then run through your own domain, which…

SPF, DKIM and DMARC: what they are and how to check yours

SPF, DKIM and DMARC are three DNS records that prove your email really comes from your domain. Gmail, Yahoo and Microsoft require all three from bulk senders, and cold email counts as bulk. A domai…

Adding DNS records at Cloudflare, GoDaddy, Namecheap and Porkbun

If you bring your own domain to OutreachFox, you add DNS records yourself: SPF, DKIM and DMARC for authentication, MX for inbound mail, and a CNAME for a custom tracking domain. This article shows …

Domain forwarding and MX records for cold-email domains

A cold-email domain should behave like a real company domain. Two things make that true: the domain forwards to a real website, and it can receive mail. Spam filters and curious prospects both chec…

How many mailboxes per domain and domains per campaign (best practice)

Cold email scales horizontally: many mailboxes sending a little each, spread across many domains, rather than one mailbox sending a lot. This article gives the numbers to plan your infrastructure a…

Pre-warmed domains and mailboxes explained

A brand-new domain has no sending history, so the first two to three weeks after purchase are spent warming up before you can send campaigns. Pre-warmed domains are domains that Icemail registered …