By KYN AI Advisory Team — AI implementation specialists, Singapore
Cold email passes spam filters when the sending domain is authenticated, the message is short and specific, and recipients can leave in one step. Twelve templates follow. Each has one verifiable line, one ask and plain text. Templates do not fix a bad list or a damaged domain, so set the technical base first and then use the wording.
What makes a cold email land in the inbox?
Filters judge the sender first and the words second. Google's email sender guidelines ask all senders to authenticate with SPF or DKIM, and bulk senders above 5,000 messages a day to Gmail to add DMARC and one-click unsubscribe on marketing mail. Google also asks you to keep the spam rate in Postmaster Tools below 0.10% and never reach 0.30%.
Four things matter most:
- Authentication. SPF, DKIM and DMARC set up on the sending domain before the first send.
- Complaint rate. People mark mail as spam when it is irrelevant. A tight list protects you more than any wording.
- Volume pattern. A new domain that sends 300 emails on day one looks like abuse. Ramp up.
- Plain content. One link at most, no attachments, no image-only messages, no tracking-heavy formatting.
What does Singapore law require?
The Spam Control Act 2007 applies to unsolicited commercial electronic messages and requires an unsubscribe facility. The PDPC's Do Not Call Registry guidance covers marketing messages to Singapore telephone numbers. Read the Act itself for the exact duties, and take advice if your campaign is large. This article is not legal advice.
Practical rules that follow from it:
- identify who you are in the message;
- include a working way to opt out;
- stop contacting anyone who opts out, across every channel;
- keep a record of the opt-out.
The 12 templates
Replace the bracketed items. Each opening line must be true and checkable, from a source you can link in your internal record.
1. Registry or filing trigger
Subject: [Company]'s new [filing type]
Hi [Name], I saw [Company] filed [change] on [date]. We build [one-line offer] for [type of company]. Would a 15-minute call on [specific topic] be useful? If not, tell me and I will not write again. [Name, company, unsubscribe line]
2. Website change
Subject: [New page or product]
Hi [Name], your site now lists [new thing]. Teams adding that often hit [specific problem]. We solved it for [industry] by [one sentence]. Open to a short call?
3. Hiring signal
Subject: Your [role] opening
Hi [Name], I noticed the [role] opening at [Company]. That role usually carries [task]. We automate [task] for [industry]. Worth a conversation before you hire?
4. Expansion signal
Subject: [City] expansion
Hi [Name], [Company] opened in [city] this year. Cross-border teams often struggle with [specific issue]. We help [industry] with that. Can I send a one-page example?
5. Referral
Subject: [Mutual contact] suggested I write
Hi [Name], [Mutual contact] suggested I contact you about [topic]. [One sentence on what you do.] Would you like a short summary?
6. Event follow-up
Subject: [Event]
Hi [Name], we were both at [event]. You mentioned [specific thing]. I have a short note on [related topic]. Shall I send it?
7. Regulatory change
Subject: [Regulation] change
Hi [Name], [Authority] changed [rule] on [date]. For [industry], that affects [task]. We built a check that flags the affected records. Would a walkthrough help?
8. Customer or case reference (industry only)
Subject: [Task] for [industry]
Hi [Name], we built [system] for a [industry] firm in [country]. It cut [manual task] to a review step. Does your team still do [task] by hand?
9. Content-based
Subject: Your post on [topic]
Hi [Name], your post on [topic] made the point that [point]. We see the same in [industry]. Do you have a view on [question]?
10. Soft ask for the right person
Subject: Who handles [function]?
Hi [Name], I am trying to reach whoever owns [function] at [Company]. Could you point me to the right person?
11. Second touch after silence
Subject: Re: [Original subject]
Hi [Name], one follow-up on my note about [topic]. Here is the one-page example: [link]. If this is not relevant, say so and I will close the file.
12. Break-up note
Subject: Closing the loop
Hi [Name], I have written twice about [topic] without a reply, so I will stop here. If priorities change, reply to this email and I will pick it up.
How do you adapt templates for Singapore readers?
- Be specific and brief. Four to six sentences. Busy readers open the first two lines.
- Name the entity correctly. Use the registered name from ACRA's records, not a guess.
- Avoid hype words. "Revolutionary" and "exclusive offer" trigger filters and readers.
- One ask. A 15-minute call, a one-page example, or a name. Not all three.
- Respect the market. A message to a Jakarta or Kuala Lumpur contact falls under that country's rules, not Singapore's.
How should you test before sending?
- Send to three inboxes you control at different providers. Check placement.
- Check the headers show SPF, DKIM and DMARC passing.
- Start with a small daily cap and raise it in steps over several weeks.
- Watch bounce and complaint rates after each step. Pause if either rises.
- Read 20 messages as the recipient. If the first line could be sent to anyone, rewrite it.
Our guide to where outbound breaks covers these failure points in detail.
What does a warm-up schedule look like?
A new sending domain has no history, so mailbox providers have little to judge it by. Ramp volume in steps and read the results before each increase. The schedule below is illustrative. Set your own caps by what your bounce and complaint numbers show.
| Week | Daily cap per mailbox | Check before raising | |---|---|---| | 1 | 10 to 15 | Authentication passes in headers; no bounces above your limit | | 2 | 20 to 25 | Replies arrive; no complaints logged | | 3 | 30 to 40 | Spam rate in Postmaster Tools stays low | | 4 | Hold or raise by 10 | Positive replies per 100 sent, unsubscribes per 100 sent |
Use more mailboxes rather than a higher cap per mailbox once you need volume, and keep each mailbox under its own cap.
What should a list check cover before the first send?
Run these checks on a sample of 100 addresses before you load the full list:
- Syntax and domain. Remove malformed addresses and domains that do not resolve.
- Role addresses. Info@ and admin@ rarely reach a decision-maker. Replace them or drop them.
- Duplicates. The same person under two spellings receives two emails.
- Existing relationships. Customers, open deals and past opt-outs are excluded.
- Source and date. Each record has a source you can name and a date you collected it.
If more than a small share of the sample fails, clean the whole list before sending. A clean list of 300 beats a dirty list of 3,000.
Where KYN fits
KYN builds outreach agents that write one checkable first line per account and hold the draft for a named person to approve. For an insurance brokerage, that runs at about S$0.02 per email, with replies sorted at about S$0.01 each. A suppression list is checked before every send, and every action is logged with the actor.
The first 14 days are a review of your stack and interviews with your team. A full build ships in under 90 days. See sales systems.
Frequently asked questions
Do templates still work if the list is poor?
No. A poor list produces complaints and bounces, which damage the domain whatever the wording. Fix the list and the authentication first.
Should I use a separate domain for cold email?
It is a common practice because it protects your main domain if the sending reputation suffers. Set up SPF, DKIM and DMARC on it before the first send, and ramp volume in steps.
Can I send cold email to any Singapore business address?
The Spam Control Act sets duties for unsolicited commercial messages, including an unsubscribe facility. Read the Act and take legal advice for your case. Always honour opt-outs.
Checked 30 October 2026.
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