Rate limits and quotas
Requests per second, emails per month, and what happens at each limit.
Requests per second#
Each account, across all its keys, can make 2 (Free), 10 (Pro) or 25 (Scale) requests a second. Authenticated responses carry ratelimit-limit, ratelimit-remaining and ratelimit-reset (seconds). Over the limit you get 429 rate_limit_exceeded with retry-after: 1.
Email quotas#
- Each recipient counts as one email (to, cc and bcc, after suppressed addresses are removed).
- Monthly quotas: 3,000, 50,000 or 100,000. They reset on the 1st of the month at midnight UTC.
- The Free plan also allows 100 emails a day, resetting at midnight UTC.
- Cancelled emails and permanent failures are given back.
- We email you once at 80% and once at 100% of your monthly quota. Over it, sends return
429withmonthly_quota_exceededordaily_quota_exceeded. Nothing is billed extra.
All plan limits#
| Free | Pro | Scale | |
|---|---|---|---|
| Emails a month | 3,000 | 50,000 | 100,000 |
| Emails a day | 100 | No limit | No limit |
| Requests a second | 2 | 10 | 25 |
| Domains | 1 | 10 | 1,000 |
| API keys | 5 | 50 | 100 |
| Webhook endpoints | 1 | 10 | Unlimited |
| Emails and events kept | 1 day | 3 days | 7 days |
| Contacts | 1,000 | 10,000 | 50,000 |
| Segments | 1 | 10 | 100 |
Message limits on every plan
- Recipients per field
- 50to, cc and bcc each
- Emails per batch
- 100
- Attachments
- 40 MBUp to 50 files
- HTML body
- 2 MB
- Tags
- 10
- Schedule ahead
- 30 days
Note
Request logs are kept for 30 days on every plan, with keys and attachment contents removed.
Still stuck? Write to us and we'll reply by email.Contact ussupport@iresendly.com