SendX: Email marketing platform
SendX is an Email marketing platform founded in 2016, headquartered in India. Starting at $9.99/mo, it targets contact-billed senders working through one REST endpoint, who take SMTP from the sister product SendPost. Our verdict: One plan with every feature, unlimited sends from $9.99. Watch for: A 95-98% inbox claim nobody can check. Rated 6.6/10 overall across ease of use, deliverability, and pricing value.
What is SendX?
SendX was built in Bengaluru in 2016 by Varun Jain, Mayank Agarwal and Agnibha Nath, bootstrapped and incorporated in Delaware through Stripe Atlas. In 2021 the private equity firm Inturact Capital bought the SendWorks suite, and its managing partner Trevor Hatfield became CEO; the legal entity still trades as SendPost, LLC.
There is no SMTP relay. Everything, transactional mail included, goes through a single REST call to api.sendx.io carrying an X-Team-ApiKey header, and SMTP lives instead in the sister product SendPost, sold separately. Billing counts contacts rather than messages, with none of the monthly send multiplier Mailchimp applies at every tier.
Explore SendX on SMTPedia
Frequently asked questions
Is SendX worth it in 2026?
Our full editorial review covers pricing, deliverability, ease of use, support quality, and API/MCP maturity. Read the SendX review →
How much does SendX cost?
All pricing tiers, hidden fees, refund policy, and the true cost per email are broken down in the pricing tab. See SendX pricing →
What are the best alternatives to SendX?
SendX compared with its closest competitors by use case, pricing, and switching cost. See alternatives →
What are the SMTP settings for SendX?
Hostnames, ports, authentication, rate limits, and DKIM/SPF configuration for SendX. See SMTP settings →
Does SendX have an official MCP server?
Our API tab covers SendX's REST API version, SDKs, rate limits, and MCP server support (official, community, and commercial wrappers). See API + MCP →
This review follows our email infrastructure testing methodology. We disclose affiliate relationships in our editorial independence policy.
