SMTP-enabled proxies

SMTP proxies are servers with an open port 25 for sending email from the sender to the destination mail server. They let you handle bulk mailing and test deliverability across different network environments. Learn more about proxies with email sending support in our knowledge base. If you need the full list of verified addresses for SMTP work, you can buy premium access to the service.

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Useful for working with SMTP

Tools and sections to help set up and test SMTP connections through a proxy.

Check

Check your IP and ports

See which address the mail server sees on connection. Useful before sending to confirm traffic goes through the proxy.

Open IP check
Open IP check
Reference

Protocols and ports in the knowledge base

Learn why SOCKS5 is better than HTTP for mail tasks, which ports are needed, and what limitations to consider.

Read in knowledge base
Read in knowledge base