Cold email guides and resources
Practical, no-fluff guides on deliverability, dedicated IPs, warmup, and inbox placement. The same thinking that shapes how Sendbox is built.
Cold Email Best Practices for 2026
Cold Email Best Practices for 2026
Cold email isn't dead in 2026, but the shortcut version of it is finished. The programs still delivering results are run like infrastructure problems and targeting problems — not like a game of volume and clever hooks.
Ritesh Chauhan · 11 min read
How to Improve Cold Email Deliverability: A Fix-It Playbook
How to Improve Cold Email Deliverability: A Fix-It Playbook
When deliverability drops, fixing things in the wrong order costs you days you don't have. This is the diagnostic sequence I actually work through, fastest fix first.
Ritesh Chauhan · 10 min read
How to Reduce Your Cold Email Bounce Rate
How to Reduce Your Cold Email Bounce Rate
A bounce rate above 2 to 3 percent tells mailbox providers your data is dirty. Most of that number traces back to two fixable sources: addresses you never validated, and strict secure email gateways.
Ritesh Chauhan · 10 min read
Dedicated IP vs Shared IP for Cold Email: What Actually Changes
Dedicated IP vs Shared IP for Cold Email: What Actually Changes
On a dedicated IP, your sending reputation belongs to you alone. On a shared pool, it's an average of whoever else is sending from it. Here's when that distinction actually matters.
Ritesh Chauhan · 9 min read
How to Avoid the Spam Folder With Cold Email
How to Avoid the Spam Folder With Cold Email
Spam filters weigh three things: who you are, what you actually sent, and how people responded. Most cold email fails on the first one — which also happens to be the one people think about least.
Ritesh Chauhan · 9 min read
Cold Email Infrastructure Setup Guide: Domains, Mailboxes, and DNS
Cold Email Infrastructure Setup Guide: Domains, Mailboxes, and DNS
Cold email infrastructure is really just the domains, mailboxes, and DNS records your campaigns depend on — but get the build order wrong and you'll spend weeks undoing your own work. This is the sequence that holds up.
Ritesh Chauhan · 10 min read
How to Warm Up Email Accounts for Cold Outreach
How to Warm Up Email Accounts for Cold Outreach
Warmup is how you convince mailbox providers you're a real sender before you start running real campaigns. Skip it and even a flawlessly configured account still lands in spam. Here's how to do it properly.
Ritesh Chauhan · 9 min read
Email Authentication: SPF, DKIM, and DMARC Explained
Email Authentication: SPF, DKIM, and DMARC Explained
SPF, DKIM, and DMARC are three DNS records that together prove you're allowed to send from your own domain. Miss any one of the three and mailbox providers default to treating you as suspicious.
Ritesh Chauhan · 10 min read
Cold Email Deliverability: The Complete Guide
Cold Email Deliverability: The Complete Guide
There's no single dial for deliverability. It's six moving parts pulling together — infrastructure, authentication, warmup, list quality, content, and engagement — and this walks through what each one contributes.
Ritesh Chauhan · 11 min read
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