An outbound primer for founders

Most cold email problems start well before anyone writes the email. The list, the sending setup and the way results get read decide more than the copy does. Here is the accepted practice for each stage, along with the rules that mailbox providers and the law actually set.

Define who you are writing to

Start with an ideal customer profile you can search for. Write down the company size, industry, location and stage of the customers who bought fastest and stayed longest, then the job title of the person who signed. If you cannot describe that buyer in two sentences, the list will drift and every later step gets harder.

Then decide who should never receive the email. Suppress current customers, open deals, past churned accounts you are still talking to, partners and anyone who has opted out before. Most outreach tools let you upload a suppression list, and it is worth doing before the first send.

Build the list around a reason to talk now

The strongest lists start from a trigger: a funding round, a new executive, a job post for the role you help with, an expansion or a launch. A trigger gives the email a reason to exist, and it gives you a reason to contact this company this month.

Search by exact job title alongside the company profile, and keep it to the one or two people who own the problem. Contacting half a company at once looks like spam to the buyer and to their email filters. Leave out shared inboxes such as info@ or sales@, which rarely reach a decision maker.

Verify every address before sending. Most deliverability guidance treats a bounce rate above 2% as a warning sign, because mailbox providers read bounces as evidence of a bought or stale list. Treat catch all domains, which accept every address, as unconfirmed and send to them in small batches.

Meet the sender rules

Since February 2024, Google and Yahoo require senders to authenticate their mail with SPF and DKIM, and bulk senders must also publish a DMARC record aligned with the From address. Microsoft added similar requirements for Outlook in 2025. Google also asks senders to keep spam complaints below 0.3% in its Postmaster Tools, and recommends staying under 0.1%.

Send cold email from separate domains and keep your main domain out of it. Your main domain carries customer, investor and team mail, and a reputation problem on it is slow to fix. Separate domains that resemble yours, each with a few inboxes, keep that risk contained. Point each one to your website so a curious recipient lands somewhere real, and send from a named person whose replies someone actually reads.

New inboxes need warming before they carry volume, typically two to four weeks of gradual sending. After that, keep each inbox to a modest daily volume. We cap ours at 20 to 25 cold emails a day and grow total volume by adding inboxes. Set up Google Postmaster Tools on each sending domain so you can watch reputation and complaint rates directly.

Follow the law

The US CAN SPAM Act applies to business email. It requires an accurate sender and subject line, a valid postal address, and a clear way to opt out that you honor within 10 business days. Rules outside the US are stricter. Canada’s anti spam law generally requires consent, and several European countries limit unsolicited business email under privacy and marketing laws. Check the rules for each country on your list before you send there.

Write a short, plain first email

Keep the first email short, focused on one problem and one ask. Plain text with no images, attachments, links or tracking pixels in the first touch reads like a real person wrote it, and it gives filters less to object to.

Write about the buyer’s situation and the trigger, in the words customers use on your sales calls. Lead with their problem and save your company description for one line at most. When you mention a result, make the math work from the buyer’s side: hours saved, a hire avoided, or how fast it pays back.

Keep subject lines short and plain, the way a colleague would write them. Avoid all caps, false urgency and “Re:” on a first message, which mailbox providers and buyers both read as tricks.

Make the first ask small. A question about interest is easier to answer than a request for 30 minutes on someone’s calendar, and it starts the conversation that leads to the meeting.

Follow up with purpose

Plan a short sequence of three to five emails spaced a few days apart. Many replies come from the follow ups, so a single email undersells the list you built. Each follow up should add something: a different angle on the problem, a relevant example or a simpler ask. Avoid emails that only say you are bumping this to the top of their inbox.

Add other channels for the accounts that matter most. A LinkedIn connection or a phone call alongside the email gives a busy buyer more than one way to respond. End the sequence with a short, polite close, and stop contacting anyone who asks you to.

Match effort to readiness

Not every account deserves the same treatment. Accounts showing a clear trigger and a strong fit justify a personal note or a call alongside the email. Weaker fits get the standard sequence. Everyone else stays in your marketing until something changes.

Size the list to the volume you can send, so every contact receives the full sequence before the next batch starts.

Measure what is real

Fix delivery before judging anything else. Watch bounces and spam complaints, and test where your mail lands at the major providers. A new subject line cannot help mail that never reaches the inbox.

Judge copy on positive replies and meetings held. Open rates stopped being reliable after Apple’s Mail Privacy Protection launched in 2021, because it loads tracking pixels on the reader’s behalf.

Respect sample size. A handful of replies from a few hundred sends is too small to call a winner, so change one thing at a time and let each test run to a meaningful count. Keep a simple log of what changed and when, so you can tell which change moved the number.

Answer fast

Speed matters once someone replies. Harvard Business Review research on inbound leads found that companies responding within an hour were nearly seven times as likely to qualify the lead as those who waited longer. Reply to every human response the same business day, book the meeting, and log it in your CRM so nothing falls between the inbox and the pipeline.

Handle the other replies just as carefully. Remove anyone who opts out right away, note the referrals people give you, and set a reminder for anyone who says not now.

If you would like outbound set up and run this way for your company, book a call and we can talk it through.