Cold email for SaaS founders that does not get ignored

Set up before you send anything

• Use a secondary domain

  Send from a lookalike domain, never your primary. Reputation damage on the sending domain must not touch your product mail.

• Authenticate properly

  SPF, DKIM and DMARC on the sending domain. Without all three you are filtered before a human reads a word.

• Warm up for two weeks

  Ramp from a handful of sends per day. Sudden volume from a fresh domain is the clearest spam signal there is.

The four line message

Line one: a specific observation about them, proving you looked. Line two: the problem you believe they have, in their language. Line three: one sentence on what you built and one number that makes it credible. Line four: a small ask, such as whether it is worth ten minutes.

No attachments, no images, no calendar link in the first mail. Every extra element lowers deliverability and raises the perceived cost of replying.

Volume discipline

Fifty personalised sends per day per mailbox is a sane ceiling. If your reply rate is below three percent, the list or the message is wrong, and sending more only accelerates the damage.

FAQ

How many follow ups?

Two, spaced four and ten days out, each adding new information rather than repeating the ask.

Is cold email legal?

In business to business contexts it generally is in most jurisdictions, provided you identify yourself and honour opt outs immediately. Check local rules before sending.