The numbers and records worth keeping handy.
Email limits
- max email size: 25 MB including attachments
- attachment types: all types supported
- subscribers per newsletter: unlimited (you pay for sends, not size)
Sending limits
New newsletters ramp up over a 30-day warm-up, tracked separately per provider. Once warm-up completes, your monthly limit is set by your plan. See email warm-up and pricing.
API rate limits
60 requests per minute per token. Limits are reported in the X-RateLimit-* response headers. See the API reference.
DNS records for custom domains
When you set up a custom domain, tinysend gives you the exact values to paste. The record types are:
- CNAME — points your archive subdomain at tinysend hosting
- TXT (SPF) — authorizes tinysend to send for your domain
- CNAME (DKIM) — publishes the keys that sign your mail
- TXT (DMARC) — sets your policy for mail that fails auth
Use the values shown in your newsletter’s sender tab — they’re specific to your domain. Changes can take a few minutes to a few hours to propagate before they verify.
Questions?
Contact us at hi@tinysend.com.