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Sales email templates

Sales Email Subject Lines

Keep a cold sales email subject to 1-3 plain words that read like a note from a colleague, with no spam words, prices or fake Re: prefix. Below are 8 patterns and 30+ examples, each with the first line that keeps its promise.

Template 1 as a Ken Sequence Step

Ken sequence step

Query

Sequence step 1 - Sales email subject lines

Subject
{company} [topic]
Body preview
{company} [recent change], so [topic] is probably on your list this quarter. [one-line offer]. Want me to walk you through how it would work ...
Variables
{company}, {firstName}, {sender_first_name}
You write
[topic], [recent change], [one-line offer]

Template 1 below, "Their company + one topic", set up as the first step of a Campaigns sequence.

Use this template in KenAI personalization: 300 credits per 1,000 contacts

When to Use

In short Use these on the first email of a sequence; follow-ups reply in the same thread and keep the original subject.

  • First email to a new prospect: pick a pattern that names their company, a recent event or the topic you're writing about.
  • A new thread with someone you've met, such as after an event or a referral: name the shared context.
  • Follow-ups in a sequence: no new subject. Reply in the thread so the first email sits underneath.
  • At volume: Ken's skills default to an AI-written subject per contact, with one of these patterns as the static fallback.

Templates

In short Copy any of the 8 templates below, replace each [bracketed] part and cut any line that isn't true for you. Ken fills the {firstName}-style variables.

Variables

The templates use Ken's editor syntax. Ken fills {firstName}, {company} and {industry} from each contact and {sender_first_name} from the sending inbox. {{First Line}} is an AI variable. Ken's AI personalization writes it for each contact from the prompt of that name. To cover an empty field, add a fallback after a pipe, such as {firstName|there}. Replace every word in [brackets] with your own before you paste.

Your signature

For cold and other commercial email, put your postal address and a one-line opt-out in the signature under {sender_first_name}, such as "Reply stop and I won't email again." The FTC's CAN-SPAM guide requires both, B2B email included.

Template 1: Their company + one topic
Subject: {company} [topic]

Hey {firstName},

{company} [recent change], so [topic] is probably on your list this quarter.

[one-line offer]. Want me to walk you through how it would work for your team?

{sender_first_name}

Why it works: Their company name plus one topic reads like an internal email, and the first line explains the topic right away.

More subject lines in this pattern:

  • {company} onboarding
  • {company} hiring plan
  • renewals at {company}
  • {company} support queue
Template 2: The trigger event
Subject: [trigger event]

Hey {firstName},

Saw the news about [trigger event]. Teams usually run into [problem] in the first few months after that.

[one-line offer]. Want me to show you how it would work at {company}?

{sender_first_name}

Why it works: A recent event in the subject shows the email was written for them this week, not pulled from a list.

More subject lines in this pattern:

  • new Denver office
  • your second warehouse
  • new CRO
  • the ERP switch
Template 3: The mutual connection
Subject: via [mutual contact]

Hey {firstName},

[mutual contact] said you own [topic] at {company} and suggested I write to you directly.

[one-line offer]. Want to see how it works?

{sender_first_name}

Why it works: A name they already trust is the strongest subject you can write, so use it only when the referral is real.

More subject lines in this pattern:

  • [mutual contact] sent me
  • intro from [mutual contact]
  • [mutual contact] suggested
Template 4: The outcome they want
Subject: fewer [problem]

Hey {firstName},

Most {industry} teams I talk to lose hours every week to [problem].

[one-line offer], so your team gets that time back. Want me to show you how?

{sender_first_name}

Why it works: Naming the result they want in plain words, with no numbers, promises a benefit without sounding like an ad.

More subject lines in this pattern:

  • fewer no-shows
  • faster month-end close
  • less data entry
  • shorter onboarding
Template 5: The peer company
Subject: [topic] at [peer company]

Hey {firstName},

[peer company] had the same [topic] setup as {company}. They changed one thing: [change].

Want me to walk you through what they did?

{sender_first_name}

Why it works: People want to know what similar companies do, so a peer in the subject earns the open and the first line pays it off.

More subject lines in this pattern:

  • filling cancellations
  • what [peer company] changed
  • {industry} renewals
Template 6: The idea for them
Subject: idea for {company}

Hey {firstName},

Here's the idea: [idea]. For {company}, that could mean [outcome].

Want me to sketch how it would work for your team?

{sender_first_name}

Why it works: A plain promise of one idea makes the open feel safe, as long as the first line delivers the idea itself.

More subject lines in this pattern:

  • pipeline idea
  • {company} onboarding idea
  • idea for [topic]
Template 7: The thing you made for them
Subject: [resource] for {company}

Hey {firstName},

I put together [resource] for {company}. It shows [what it shows].

Want me to send it over?

{sender_first_name}

Why it works: Naming something you already made for them earns the open, and the reply costs them one word.

More subject lines in this pattern:

  • {company} onboarding teardown
  • checkout page notes
  • {industry} benchmark
Template 8: The shared context
Subject: after [event name]

Hey {firstName},

Good talking at [event name] on [day]. You mentioned [their priority], and I said I'd send a way to handle it.

[one-line offer]. Want to pick it up on a call next week?

{sender_first_name}

Why it works: A place you both were gives the subject instant context, and the first line proves you remember the conversation.

More subject lines in this pattern:

  • your [event name] talk
  • [event name] booth chat
  • after the expo
  • Thursday's panel

Timing

In short Only the first email gets a new subject; Ken's default 3-email sequence keeps the follow-ups in the same thread.

Sales email subject lines cadence
DayStepGoal
Day 1First email with a subject from one of these patternsEarn the open with a subject that names them
Day 4Follow-up, replied in the same threadKeep the first email visible under the new one
Day 9Close, replied in the same threadEnd the sequence with the full context in view

Gaps follow Ken's sequence guide: 2-4 days between emails, up to 5 before the last one.

Examples

In short 3 filled-in versions for property management, veterinary clinics and commercial printing, all with fictional companies.

Larchwick Property Group is a fictional company. A rep selling tenant-screening software writes to the operations director of a property manager that just took over two buildings.

Example: Property management
Subject: Larchwick move-ins

Hey Renee,

Larchwick just took over two buildings on the east side, so move-ins are probably on your list this month.

Our screening checks applicants in under an hour, so your leasing agents stop waiting on reports. Want me to walk you through how it would work?

Sam

Marrowfield Vet Partners is a fictional company. A rep selling appointment software writes to the practice manager of a group of 5 veterinary clinics.

Example: Veterinary clinics
Subject: fewer no-shows

Hey Luis,

Most clinic groups I talk to lose a few appointment slots every day to no-shows.

Our reminders text pet owners the day before and fill cancelled slots from a waitlist, so your vets get that time back. Want me to show you how?

Nina

Copperwake Print Co is a fictional company. A rep who met the print shop's owner at a trade expo writes the next week about slow job estimates.

Example: Commercial printing
Subject: after the expo

Hey Grace,

Good talking at the print expo on Thursday. You mentioned estimates were slowing down your sales team, and I said I'd send a way to handle it.

Our estimating tool builds a job estimate from the spec sheet in minutes. Want to pick it up on a call next week?

Omar

Mistakes to Avoid

  • Writing a subject the email doesn't deliver. The FTC's CAN-SPAM guide says the subject line must accurately reflect the content of the message, and a bait subject loses the reader on the first line.
  • Adding Re: or Fwd: to a first email to fake a thread. Google's sender guidelines say to use them only on real replies and forwards.
  • Putting spam words, prices or percentages in the subject. Ken's spam-word rules allow none in subjects, because filters weigh the subject more heavily than the body.
  • Writing a headline instead of a subject. On cold emails, Ken keeps static subjects to 1-3 plain words that read like a note from a colleague.
  • Giving every follow-up its own subject. A new subject splits the thread, so the reader loses the context of your first email.

FAQ

What is a good subject line for a sales email?

A short one that names their company, a recent event or a topic they own, such as their company name plus one word for the topic. For a cold email, Ken keeps static subjects to 1-3 plain words with no spam words, prices or percentages.

How long should a sales email subject line be?

1-3 words for a static subject on a cold email, per Ken's rules. Short subjects read like internal email, and the first line of the body does the rest of the work. A warm email, such as an invite or a meeting recap, can say a few words more.

Should follow-up emails have the same subject line?

Yes. Reply in the same thread so the subject stays and the first email sits underneath. Google's sender guidelines reserve Re: and Fwd: for real replies and forwards, so never add them to a new email.

Should you personalize the subject line?

At volume, Ken's skills default to an AI-written subject per contact. Keep one of these patterns as the static fallback for contacts with thin data.

Can you use numbers or emojis in a subject line?

Ken's rules say no: keep $, %, stacked numbers and emojis out of subjects, and save one specific number for the body, where it carries more weight.

Do This in Ken

Send This Sequence in Ken

Run these templates as a Campaigns sequence in Ken. Campaigns finds and qualifies leads, writes personalized email and LinkedIn sequences, and sends them from your outbound inboxes. AI personalization, priced below, can fill the personal lines for each contact.

  1. Create a campaign and paste template 1 as the first email step.
  2. Add the next steps from this page on the days in the timing table.
  3. Replace every [bracketed] part, and add a fallback such as {firstName|there} where a field can be empty.
  4. Add your contacts and launch.
Module
Campaigns
Open in Ken
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Cost
AI personalization: 300 credits per 1,000 contacts
Join the waiting listGet a free campaign built

The new Ken opens to the waiting list in batches.

Related

Sources

Every source, with the date we checked it
SourceChecked
Google Workspace Admin Help, Email sender guidelines
FTC, CAN-SPAM Act: A Compliance Guide for Business
Ken cold email skills (MIT), email-copywriting and campaign-strategy

Changelog

  1. Page published.