Mailbox API

Mailbox is a professional email service allowing you to create and manage email accounts using your own domain. It supports standard email protocols such as IMAP and SMTP, allowing access from most email clients (webmail, desktop or mobile applications).

Mailbox also supports calendar and contact synchronization using CalDAV and CardDAV.

Concepts

Refer to our dedicated concepts pageOpen in new context to find definitions of the different terms referring to Scaleway Mailbox.

Quickstart

Incoming and outgoing protocols

• Incoming server IMAP — Read, update, and delete your emails

  • Port: 993
  • Encryption: SSL/TLS
  • Hostname: imap.{yourdomain}

• Incoming server POP3 — Download and manage your emails locally

  • Port: 995
  • Encryption: SSL/TLS
  • Hostname: pop3.{yourdomain}

• Outgoing server SMTP — Send your emails

  • Port: 465
  • Encryption: SSL/TLS
  • Hostname: smtp.{yourdomain}

Technical limitations

Mailbox quotas

• Mailbox storage: up to 20 GB per mailbox (for emails, attachments, and mailbox folders).
• Number of Mailboxes: 20 Mailbox email accounts per project (during Beta phase). If you need to create more mailboxes, contact the Scaleway Support teamOpen in new context.

Message limits

• message (the maximum number of messages that can be submitted per SMTP session): 10
• size (the maximum size of a message): 104857600 bytes (100 MiB)
• received-headers (the maximum number of received headers that a message can contain): 50

Supported ESMTP extensions

Mailbox SMTP relay supports the following ESMTP extensionsOpen in new context:

• 8BITMIME
• BINARYMIME
• CHUNKING
• ENHANCEDSTATUSCODES
• NO-SOLICITING
• PIPELINING
• REQUIRETLS
• SIZE 104857600
• SMTPUTF8
• STARTTLS

Going further

For more information about Mailbox, you can check out the following pages:

• Mailbox DocumentationOpen in new context
• Scaleway Slack CommunityOpen in new context join the #mailbox-beta channel
• Contact our support teamOpen in new context.