# Set Up SMTP Servers There are varieties of SMTP servers available in the plugin that you could connect to and you could create an account with many or all of them to subscribe fo their free plans, each free plans has limits of possible messages allowed within a specified period of time which may vary from one server to another. Some of the currently available SMTP servers allowed by the plugin include: 1. PHP (WordPress default) 2. SendGrid 3. Sendinblue 4. Amazon SES 5. Mailgun 6. SMTP.com 7. Gmail 8. Zoho 9. Postmark 10. Microsoft 11. SparkPost 12. Pepipost 13. Mailjet 14. Sendpulse **Note:** The SMTP mailers will not be able to work on your site until you’ve completed the respective processes involved in setting them up. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.yaycommerce.com/yaysmtp/how-to-set-up-smtps.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.