Cold Email Deliverability for Indian B2B
Cold email deliverability for Indian B2B depends on authenticating your sending domain with SPF, DKIM, and DMARC, using a separate domain from your main one, warming up new mailboxes, keeping daily volume low, sending to clean verified lists, and writing relevant copy that earns replies rather than spam complaints. Reaching the inbox is the prerequisite to any reply.
The common mistake is to focus on the message and ignore the plumbing. A team buys a list, sends a few hundred emails from the company domain on day one, and ends up in spam with the main domain's reputation damaged. The plumbing comes first.
Authenticate the sending domain
Set up SPF, DKIM, and DMARC on the sending domain so mailbox providers can verify your email is genuinely from you. Without these, a large share of cold email is filtered before anyone sees it. This is the foundation of the setup in our cold outreach playbook.
Send from a separate domain
Use a dedicated domain for cold outreach, not your primary one, so that if the outreach domain's reputation takes a hit, your main email and website domain are protected. Treat the outreach domain as the one that can absorb the risk.
Warm up and keep volume low
A new mailbox that suddenly sends hundreds of emails looks like spam. Warm it up gradually over weeks, then keep daily volume modest per mailbox and spread sending across several mailboxes. Patience here is what protects the whole system.
Send to clean lists and relevant copy
A verified list with low bounce rates protects your reputation, and copy that is relevant to the recipient earns replies instead of spam complaints. Relevance is also deliverability, because replies and low complaint rates are what keep you in the inbox. The full sequence and prospecting approach is in our cold outreach playbook.
Want an outreach system that actually reaches the inbox? Start with our audit.
Frequently asked questions
Why do my cold emails land in spam?
Usually because the sending domain is not authenticated with SPF, DKIM, and DMARC, the mailbox was not warmed up, the volume was too high too fast, or the list was poor with high bounces. Reaching the inbox depends on the plumbing and list quality, not just the message.
Should I send cold email from my main domain?
No. Use a separate domain dedicated to outreach so that any reputation damage from cold sending does not affect your primary email and website domain. The outreach domain is the one set up to absorb that risk.
How many cold emails can I send per day?
Keep it modest per mailbox, especially on newer ones, and spread volume across several warmed-up mailboxes rather than blasting from one. High volume from a single mailbox looks like spam and gets filtered, so low and steady protects deliverability.
How long should I warm up a new sending mailbox before cold sending?
Plan on two to three weeks of gradual warmup before any cold send, so the mailbox builds a pattern of opens, replies, and positive engagement. Skipping warmup is the fastest way to land in spam and damage the domain reputation you would then have to rebuild.