Limits in Amazon SES

This topic lists limits within Amazon Simple Email Service (Amazon SES).

Limits Related to Email Sending

The following tables list limits related to email sending.

Note

Sending limits are based on recipients rather than on messages.

Limit	Description
Sending limits in the sandbox environment	Sending quota: 200 emails per 24-hour period. Maximum send rate: 1 email per second. Note The rate at which Amazon SES accepts your messages might be less than the maximum send rate. To increase your sending limits, open an SES Sending Limit case in Support Center. For more information, see Moving Out of the Amazon SES Sandbox.

Limit	Description
Maximum message size (including attachments)	10 MB per message (after base64 encoding).
Accepted header fields	Amazon SES accepts any email headers that follow the format described in RFC 822.
Accepted attachment types	Amazon SES accepts all file attachment types except for attachments with file extensions listed in Appendix: Unsupported Attachment Types.

Limit	Description
Sender address	Both in and out of the sandbox, you are required to verify the "From", "Source", "Sender", and "Return-Path" email addresses or domains, although not "Reply-To".
Recipient address	In the sandbox environment, all "To" addresses except for Amazon SES mailbox simulator addresses must be verified. If you don't want to verify your "To" addresses, open an SES Sending Limit case in Support Center. For more information, see Moving Out of the Amazon SES Sandbox.
Maximum number of recipients per message	50 recipients per message. A recipient is any "To", "CC", or "BCC" address.
Maximum number of identities you can verify	1000 identities (domains or email addresses in any combination) per AWS account per region.

Limit	Description
Maximum number of configuration sets	50
Maximum number of event destinations per configuration set	10
Maximum number of dimensions per CloudWatch event destination	10

Limit	Description
Email sending over port 25	Amazon EC2 throttles email traffic over port 25 by default. To avoid timeouts when sending email through the Amazon SES SMTP endpoint from Amazon EC2, use a different port (587 or 2587) or fill out a Request to Remove Email Sending Limitations.

The following table lists limits related to email receiving.

Limit	Description
Maximum number of rules per receipt rule set	100
Maximum number of actions per receipt rule	10
Maximum number of recipients per receipt rule	100
Maximum number of receipt rule sets per AWS account	20
Maximum number of IP address filters per AWS account	100
Maximum email size (including headers) that can be stored in an Amazon S3 bucket	30 MB
Maximum email size (including headers) that can be published using an Amazon SNS notification	150 KB

The following table lists limits that apply to both email sending and email receiving.

Limit	Description
Rate at which you can call Amazon SES API actions	All actions (except for `SendEmail` and `SendRawEmail`) are throttled at one request per second. For more information about the Amazon SES API, see the Amazon Simple Email Service API Reference.

For technical discussions about various Amazon SES topics, visit the Amazon SES Blog. To browse and post questions, go to the Amazon SES Forum.