SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail), and DMARC (Domain-based Message Authentication) are 3 DNS records that authenticate email sender identity. Missing any one…

A B2B contact database is a structured repository of business contact records:name, email, phone, title, company:queryable by ICP filters such as industry, company size, and…

Gmail Spam folder is the destination for emails Gmail filters classify as unwanted. Cold emails land in spam due to spam-trigger phrases in subject and…

Liquid syntax is a templating language created by Shopify that cold email tools use to insert prospect data and conditional logic into email templates. A…

Dynamic image personalization renders a custom image per recipient by overlaying merge variables like first name, company logo, or a screenshot of the prospect website…

Cold email reply rate is the percentage of prospects who reply to any email in a sequence, calculated as total unique replies divided by total…

Reply detection is the mechanism a cold email tool uses to spot an incoming reply from a prospect and pause every remaining follow-up in the…

A sales cadence is a structured, multi-channel outreach plan that spans email, phone, LinkedIn, and SMS over a fixed period of days to reach a…

Gmail's Terms of Service permit cold email when you respect daily sending limits (500/day gmail.com, 2,000/day Workspace), include a valid unsubscribe link in commercial messages,…

Gmail's sending limits in 2026: 500 emails per day for free gmail.com accounts, 2,000 emails per day for Google Workspace business accounts. Both are hard…