Cold Call or Cold Email: Right Approach for Thai Consumers in 2025

Thai Consumer Outreach in 2025
Thai consumers are mobile-first, with over 90% checking emails on smartphones. Yet they face constant spam: millions of scam calls and crowded inboxes mean cold outreach often meets resistance. An email open rate above 20% is considered good in Thailand, but most messages remain unread. Calls can cut through, but many prospects reject unknown numbers. The key is not guessing which channel to use, but relying on CRM data to guide decisions.

Cold Calls vs. Cold Emails

Calls create immediacy: They allow real-time conversations, handling objections on the spot. But unsolicited calls often feel intrusive in Thailand.
Emails scale efficiently: Dozens can be sent in the time it takes to make one call. Tools like HubSpot Sales Email Tracking show opens and clicks. Still, cold email response rates average only 1%, and just 24% are opened.
Consumer context matters: Younger professionals often prefer email or LINE messages, while traditional industries may respond better to respectful phone calls. Job roles also influence preference: managers may answer calls more readily than technical staff.
Timing counts: Research shows calls perform best mid-week around lunchtime or late afternoon. Emails see higher engagement when sent mid-morning or late afternoon. Persistence matters—five to eight touchpoints are often required for a response.

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Using CRM Data Instead of Guesswork

CRM platforms like HubSpot help sales teams decide when to call or email:

Track engagement: Follow open and click data to time follow-up calls.
Build sequences: Test email→call→email against call→email→call, then refine based on results.
Segment by behavior: Prospects who engage with emails may prefer continued email outreach, while inactive ones may require a call or LINE message.
Challenge bias: Dashboards reveal whether calls or emails drive better conversions, helping teams overcome personal preferences.

Timing with AI

AI and predictive analytics can optimize outreach:

Identify best times: For Thai consumers, emails sent Tuesday–Thursday mid-morning perform well; calls connect better in the late afternoon.
Automate triggers: If a prospect clicks a pricing link, the CRM can prompt a rep to call within the hour. Voicemail? Follow with an automated email and scheduling link.
Prioritize leads: AI scoring directs more effort to prospects with higher engagement, maximizing ROI.

Beyond Calls and Emails: Adding LINE

Thailand’s business culture is heavily tied to LINE, with over 50 million users. Ourgreenfish integrates LINE CRM with HubSpot, enabling businesses to:

Follow up emails with LINE messages for higher trust.
Automate multi-channel workflows: no email reply in three days triggers a LINE message and a call.
Track all interactions in one CRM for consistency and compliance with PDPA.

Businesses using this integrated approach have achieved up to 70% higher email click-through rates and 33% greater overall engagement.

Smarter Outreach with Ourgreenfish

In 2025, the debate isn’t calls vs. emails—it’s how to combine both, along with LINE, into a coordinated strategy. Cold emails plant seeds at scale, while calls deepen engagement. Together, backed by CRM data and AI, they maximize success.

Ourgreenfish’s AI-powered customer platform equips Thai businesses with predictive insights, automation, and seamless integration across phone, email, and LINE. The result is higher engagement, stronger relationships, and a competitive edge. By replacing guesswork with data, businesses can turn cold outreach into meaningful opportunities.

References : HubSpot. (2025). Sales Email vs. Cold Call: When to Use Each According to Data. Retrieved from https://blog.hubspot.com/sales/call-or-email-tips-to-determine-when-to-use-which-in-sales