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High Volume

High Volume is a focused resource for related products, services, and industry information, combining service providers and product options with practical context for evaluating capabilities, costs, and fit.

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SMTP2GO

New Zealand

SMTP2GO is a New Zealand-based email delivery platform founded in 2012, offering SMTP relay and REST API. Free tier includes 1,000 emails/month, email logs, webhooks, and sending analytics — ideal for small teams and developers.

Pepipost

India

Pepipost is an India-based email API service provider founded in 2014, now part of Netcore Cloud. It specializes in SMTP relay and transactional email delivery, processing billions of emails daily with developer-friendly APIs and high deliverability.

Elastic Email

Canada

Elastic Email is a Canada-based email sending service founded in 2013, offering pay-as-you-go pricing with no minimums, dual API/SMTP support, and a free plan. Ideal for budget-conscious developers and small teams.

SparkPost

United States

SparkPost is a provider focused on transactional email sending, offering reliable email infrastructure and efficient delivery, processing over 4 billion emails per day.

Amazon SES

United States

Amazon SES is AWS's email sending service, launched in 2011. It offers SMTP and API sending, 62,000 free emails/month from EC2, and $0.10/1,000 emails beyond — the most cost-effective choice for transactional and bulk email scenarios.