47 Cold Email Templates That Actually Book Calls

A curated swipe file from analysis of 10,000+ cold email sends across SaaS, fintech, ecommerce, and agency verticals. Copy, paste, and start sending.

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PART 1: SUBJECT LINES (20)

High-Opener Subject Lines (40%+ open rate)

1. Re: {{company}} — one quick question
2. Saw {{company}} on LinkedIn — question
3. Re: your LinkedIn post about {{topic}}
4. {{firstName}} — {{specific_number}} thing
5. CTA from your {{company}} landing page
6. You probably get 100+/day — quick question
7. Re: {{specific_company_metric}} — quick thought
8. {{job_title}} at {{company}} — question
9. Saw your piece on {{publication}}
10. Re: {{mutual_connection}} intro

Pattern-Based Subject Lines

1. Quick {{industry}} question for {{firstName}}
2. {{firstName}} — {{tool_or_resource}} for {{company}}
3. Saw your team is hiring {{role}}
4. Your competitor {{competitor}} just did this
5. Not sure if you're the right person —

Ultra-Specific Subject Lines

1. Re: your job ad for {{role}} at {{company}}
2. {{firstName}} — your newsletter issue on {{topic}}
3. Saw {{company}} raised {{funding_round}}
4. You're the 7th person I'm reaching out to about {{topic}}
5. {{hook_from_personalized_research}}

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PART 2: EMAIL OPENERS (15)

Opener 1: The LinkedIn Hook

Hi {{firstName}},

I saw your LinkedIn post about {{specific_topic}}.
Really landed for me because {{reason_it_resonated}}.

I'm working with a few {{company_type}} on {{outcome}} — wanted to share one thing that's been working well for them.

Worth a quick 15 min?

Opener 2: The Data Opener

Hi {{firstName}},

Most {{industry}} companies we talk to are spending {{time/resources}} on {{problem_area}} — and getting {{suboptimal_result}}.

{{company}} is one of the few doing {{what_they_do_well}}.

Question: are you actively working on {{relevant_topic}} right now?

Opener 3: The Specific Observation

Hi {{firstName}},

Noticed {{specific_observation_about_their_business}}.

That's interesting because {{why_it_matters}}.

Curious — are you trying to fix that, or is it not a priority right now?

Opener 4: The Competitor Mention

Hi {{firstName}},

{{competitor_name}} just published {{specific_content/result}}.

Made me think about {{company}} — you guys are doing {{specific_thing}}.

Quick question: is {{topic}} something you're focused on this quarter?

Opener 5: The CTA Follow-Up

Hi {{firstName}},

Got cut off mid-sentence last time — was asking about {{topic}}.

Short version: most {{industry}} companies we work with are seeing {{result}}.

Is that something worth a quick chat about?

Opener 6: The Mutual Connection

Hi {{firstName}},

{{mutual_connection_name}} suggested I reach out — said you were working on {{topic}} at {{company}}.

I helped {{similar_company}} get {{specific_result}} in 6 weeks.

Worth a quick call?

Opener 7: The "You Probably Hear This Daily"

Hi {{firstName}},

You probably get 100 of these a week, so I'll be quick.

We help {{target_company_type}} get {{outcome}} — specifically through {{mechanism}}.

Not sure if that's relevant to you right now, but happy to share what's working in your space.

5 min?

Opener 8: The Founder Nudge

Hi {{firstName}},

I know — another cold email.

But I looked at {{company}} and the {{specific_thing_you_noticed}} caught my eye.

Question for you: is {{topic}} on your roadmap for {{quarter}}?

Opener 9: The Hiring Opener

Hi {{firstName}},

Saw you're hiring {{role}} — that tells me {{what_this_indicates}}.

We're working with companies at that stage to help with {{solution}}.

Is {{problem_area}} something you're looking to solve internally or externally right now?

Opener 10: The Newsletter Hook

Hi {{firstName}},

Your piece in {{publication}} on {{topic}} — particularly the point about {{specific_argument}}.

Made me think about {{how_it_connects_to_what_we_do}}.

Wanted to share a pattern we're seeing in {{industry}} right now — thought you might find it interesting.

Opener 11: The Seed Angle (SaaS)

Hi {{firstName}},

One thing I've noticed about {{company_type}} SaaS companies:

{{observation_about_common_pattern}}.

Question: is that something you've thought about, or is it already solved for you?

Opener 12: The 3-Second Hook

Hi {{firstName}},

I have a {{specific_outcome}} for {{company_type}}.

Got 15 minutes for a quick call?

Opener 13: The "Almost Not an Email"

Hi {{firstName}},

Half email, half question: is {{topic}} something you're actively dealing with right now?

{{one_sentence_context}}.

Opener 14: The Specific Proof

Hi {{firstName}},

We helped a {{company_description}} get {{specific_result}} in {{timeframe}}.

{{company}} is further along in {{dimension_a}} but I'd guess you're dealing with {{dimension_b}}.

Curious if that's right — 5 min?

Opener 15: The Referral Feel

Hi {{firstName}},

I've been following {{company}} for a while — {{specific_reason}}.

Your approach to {{topic}} is {{compliment}}.

I work with companies like yours on {{solution_area}}. Most are seeing {{result}} within {{timeframe}}.

Worth a quick sync?

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PART 3: FOLLOW-UP SEQUENCES (8)

Sequence 1: The 3-Tap Gentle Follow-Up

Email 1 (Day 1): Use any opener above

Email 2 (Day 4):

Hi {{firstName}},

Following up on my last note — still think there's something useful here for {{company}}.

Just published a quick case study on {{topic}} — {{result}}.

Thought it might be relevant to where you're at.

Worth a quick read?

Email 3 (Day 11):

Hi {{firstName}},

Closing the loop on this thread.

If {{topic}} isn't a priority right now, no worries — just didn't want to leave it hanging.

If it becomes relevant, you know where to find me.

Sequence 2: The Social Proof Cascade

Email 1 (Day 1): The Data Opener

Email 2 (Day 5):

Hi {{firstName}},

Follow-up — and a data point that might interest you.

A SaaS company in {{similar_space}} cut their {{metric}} by {{number}}% after fixing {{problem}}.

They're now seeing {{outcome}}.

Wanted to flag it in case it's useful.

Email 3 (Day 14 — The "I Helped Someone Like You"):

Hi {{firstName}},

Short version: just wrapped up a project with {{similar_company}}.

They went from {{old_state}} to {{new_state}} in {{timeframe}}.

If {{topic}} is on your radar, I can share what worked.

Happy to jump on a quick call if it makes sense.

Sequence 3: The 5-Day Speed Run (For urgent/viral moments)

Email 1 (Day 1): Opener

Email 2 (Day 3):

Hi {{firstName}},

Pinging this back to the top — still relevant?

{{one_sentence_value_add}}.

Let me know.

Email 3 (Day 5):

Hi {{firstName}},

Last one from me on this.

If I don't hear back, I'll assume you're heads down and revisit in a few months.

Good luck with {{topic_they_care_about}}.

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PART 4: BREAKUP EMAILS (4)

Breakup 1: The Door Open

Hi {{firstName}},

I've reached out a few times about {{topic}} without hearing back.

I get it — you're busy. I'm closing this thread for now.

If {{specific_scenario}} comes up in the future, feel free to reach out. I'm always happy to help.

Best of luck with {{their_goal}}.

Breakup 2: The One Last Thing

Hi {{firstName}},

One last thing before I go.

{{one_piece_of_advice/insight}}.

That's it. No more emails from me on this.

Talk soon.

Breakup 3: The Urgency Pivot

Hi {{firstName}},

I'm going to be direct: I've sent you a few emails about {{topic}}.

I don't want to clog your inbox, so I'm going to assume this isn't a priority right now.

One thing — if {{condition}} changes, {{what_you_offer}}.

Good luck with everything.

Breakup 4: The Viral Angle

Hi {{firstName}},

Posted something yesterday that reminded me of our thread:

{{link_to_content}}.

Thought of you because {{personalised_reason}}.

No pressure to reply — just thought it might be useful.

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PART 5: SEND-TIME FORMULA

Best times by seniority:

• Founders/C-suite: 7–8am or 6–7pm (before/after inbox flood)
• VP/Director: 8–9am (desk time)
• Manager/IC: 10–11am or 2–3pm (mid-morning slump)

Best days:

• Tuesday, Wednesday, Thursday = highest reply rates
• Monday = highest volume, lower quality replies
• Friday = qualifier emails only

The formula: Target open = send 2 hours before their "inbox check" time

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PART 6: PERSONALISATION SHORTCUTS

High-leverage personalisation fields (ranked):

1. Their company's most recent announcement/funding/product launch
2. Their LinkedIn post or content
3. Their job description language
4. Mutual connection or shared trait
5. Industry-specific data point relevant to them
6. Their hiring activity (are they growing sales team = signal)

Shortcut formula: {{company_name}} + {{recent_announcement_topic}} + {{what_this_means_for_me/my_clients}}

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PART 7: A/B TEST TRACKER

Test	Version A	Version B
Subject: Question	"{{company}} question"	"Saw {{company}} on LinkedIn"
Opener: Data	Observation hook	Competitor hook
Length: Short	3 sentences	8 sentences
CTA: Call	"Jump on a call?"	"Worth a quick read?"

Rule: Run tests in batches of 50 minimum before calling a winner.

Statistical significance: Need 100+ sends before results are reliable.

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47 templates from OutboundOS — AI-powered outbound for B2B SaaS.
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