SMTP Email Service

Reliable outgoing email delivery for business systems

SMTP server service for databases, printers, email servers, workflows, applications, alerts, and transactional messages that need to reach the inbox reliably.

Email is one of the most important communication tools in business, and it is also one of the most frequently targeted. Attackers try to forge emails, impersonate trusted senders, steal information, or contact customers to redirect payments.

Apart from criminal activity, simple technical issues can prevent important emails from being delivered and can cost real business opportunities. A properly configured SMTP email service helps control and secure outgoing email delivery for business systems and applications.

Delivery And Security

Reasons to use an SMTP email service

Reliable email delivery is not only about sending. It is about authentication, sender reputation, troubleshooting, and reducing the risk that important messages fail silently.

Prevent spoofing

SPF, DKIM, and DMARC records help verify who is allowed to send email for your domain and reduce the risk of forged messages pretending to be you.

Blacklist handling

If a sending domain or IP is blocked by blacklist organizations, delivery can stop quickly. NetSol can help investigate and guide the cleanup process.

Reliable sending

A single undelivered email can cost more than the service itself. SMTP delivery management helps business-critical messages reach customers and vendors.

Important email terms

Email spoofing: Someone fakes the sender address so an email appears to come from a trusted person or domain.
SPF: A DNS record that lists which mail servers are permitted to send email on behalf of your domain.
DKIM: An email authentication method that adds a cryptographic signature to help receivers verify the message source.
Open relay: An insecure SMTP server that allows third parties to relay mail, often abused for spam and blocked by mail providers.

SMTP email delivery is often invisible until something breaks. When authentication is wrong, a blacklist appears, or a system sends mail from an unauthorized source, important messages may land in spam or fail completely.

NetSol helps businesses use SMTP in a controlled way, with practical configuration, domain authentication, and troubleshooting support when delivery problems appear.

Streamlined email delivery using a dedicated SMTP email service

Pricing

SMTP email service pricing

Choose the sending volume that matches your business systems, applications, alerts, or transactional email workload.

Low mail volume

Email volume	Monthly fee
10,000	THB 900
20,000	THB 1,300
50,000	THB 2,600
100,000	THB 4,600

High mail volume

Email volume	Monthly fee
250,000	THB 8,800
500,000	THB 14,000
1,000,000	THB 25,000

* All prices shown exclude 7% VAT. Prices are subject to change without prior notice.