FAQ organized by category
SMTP, API and webhooks
What Type of SMTP Server to Choose?
Choosing the right SMTP server is one of the most consequential technical decisions for any business that sends email at...
Read moreWhat Is the Maximum Weight of a Message Sent Through SMTP?
Mailpro’s SMTP relay accepts messages up to 20 MB total, including the email body, headers and all attachments after Base64 encoding...
Read moreWhat’s the difference between SMTP and API?
Both SMTP and a transactional Email API send messages from your application to your customers, but they take different paths...
Read moreHow Does an SMTP Relay Service Work, and How Do You Choose One?
An SMTP relay service is a managed outgoing mail server that sends email on behalf of your application, website, CRM...
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