Direct Mail product and service limits
Limitations | Description |
Number of email domains | 5 |
Number of sender addresses | 100. Sender addresses cannot be edited, but can be deleted. A maximum of 10 addresses can be deleted per month. |
Daily quota | Each Alibaba Cloud account has an initial daily quota of 2,000 emails. The quota is adjusted based on the account's credit rating. |
Monthly quota | Daily quota × 30 |
Email tags | A maximum of 500 tags can be created. Each tag is limited to 128 characters. |
Number of recipient lists | 10 |
Number of addresses in a recipient list | A maximum of 10,000 addresses. The maximum number of supported addresses also depends on the daily quota. |
Number of templates | 100 |
IP protection | 10 IP addresses or IP address segments |
Free email quota | Each Alibaba Cloud account has a total free quota of 2,000 emails for Direct Mail. A maximum of 200 free emails can be sent per day. |
Data statistics | Query statistics by sender address and email tag. Statistics can be queried in real-time. |
Attachment size | Attachments are supported for emails sent using SMTP. The console and API do not support attachments. The total size of an email with attachments cannot exceed 15 MB. A maximum of 100 attachments can be included in a single email. The 15 MB limit is the actual total size of the email sent over SMTP. Base64 encoding increases the email size by 1.5 times or more. The final size is larger than the size on the client. Prepare attachments with a total size of 8 MB or less. To send large attachments, add hyperlinks to the email content. |
Number of recipients per call | SMTP: 100 recipients API: SingleSendMail (100 recipients), BatchSendMail (1 recipient list) Console: 1 recipient list |
Console email template | Email title: 256 characters Email body: 1 MB |
Console recipient list variables | The `UserName` variable is limited to 75 characters, and a length of 50 characters or less is recommended. The `NickName`, `Gender`, `Birthday`, and `Mobile` variables are each limited to 25 characters. |
Data query | Data is retained for 1 month. |
Sending frequency | For more information, see Three ways to send emails. |