Deliverability

Cold email deliverability guide

The EmailPal deliverability checklist: authenticate the domain, warm or lease pre-warmed mailboxes, keep volume per inbox modest, verify the list, and treat placement as a measurement. This is the page for why cold email goes to spam and what to do about it.

Why emails go to spam

Cold email lands in spam when the domain is unknown or burned, authentication fails, the list bounces, volume per mailbox is too high, or the copy matches a spam fingerprint. Fix infrastructure first, then the list, then the send pattern.

Sending limits per mailbox

Cold email is recommended at 15 per day per inbox, with a hard cap of 100 per day, and why more volume means more inboxes not a higher cap. Warming traffic does not count.

Isolated IP pools

EmailPal runs four isolated IP pools so one customer's list does not define another customer's reputation. Dedicated IPs are $20/mo on Growth and Scale.

IP and domain blacklists

A listing on Spamhaus or a similar DNSBL can reject mail even when SPF and DKIM pass. Check the domain and the sending IP, request delisting only if the listing is real, and do not keep sending through a listed name.

What are sender bounces?

A sender bounce means the sending mailbox was rejected — quota exceeded, mailbox disabled, authentication failed — not that the recipient was invalid. Fix the sender before you resume volume.

How to check and improve your domain reputation

What domain reputation is, how EmailPal's authentication and warming affect it, and what to do if placement drops. Age is not reputation; measured conversations are.

Secondary sending domains for cold email

Send cold email from domains that are not your primary company website. EmailPal will register or host those secondary domains, authenticate them, and warm the mailboxes so a bounce storm does not take down acme.com.

Google and Yahoo sender requirements

Gmail and Yahoo require authenticated mail (SPF, DKIM, DMARC), one-click unsubscribe for bulk, and a low spam-rate. EmailPal writes SPF, dual DKIM and DMARC p=reject on hosted domains. You still owe a clean list. EmailPal's own sequencer adds the unsubscribe headers for you. For mail you send through another tool, that tool should set them. EmailPal can add them for you, but only if you turn that on.