Pink PostGuide · 8 min read · Updated November 2026
Sending limits by email provider
Defaults and maximums
| Provider | Default (per min / hour / day) | Highest you can set |
|---|---|---|
| Gmail (personal) | 2 / 10 / 25 | 3 / 20 / 25 |
| Google Workspace | 3 / 20 / 50 | 10 / 100 / 500 |
| Microsoft 365 | 5 / 30 / 50 | 20 / 300 / 1000 |
| Outlook.com / Hotmail | 2 / 10 / 25 | 3 / 20 / 100 |
| Zoho Mail | 2 / 20 / 50 | 5 / 50 / 300 |
| Hostinger | 3 / 60 / 100 | 5 / 150 / 1000 |
| Other SMTP | 2 / 10 / 30 | 5 / 100 / 500 |
Pink Post spots the provider from the SMTP server name (for example smtp.gmail.com or smtp.hostinger.com). Your plan's monthly email allowance applies too, and warm-up starts new mailboxes low and raises them step by step.
Where the numbers come from
- Gmail: Gmail sending limits
- Google Workspace: Gmail sending limits in Google Workspace
- Microsoft 365: Exchange Online limits (30 messages a minute)
- Zoho: Zoho Mail rates and limits
- Hostinger: Hostinger email sending limits
Pink Post's defaults sit well below these published limits, because cold outreach is judged more strictly than normal mail.
When the provider says "slow down"
If the mail server answers with a temporary rate-limit error (such as 451 Ratelimit exceeded), Pink Post pauses only that mailbox. The pause is 5 minutes at first, then 10, 20 and so on, up to 6 hours. The reason is shown on the Mailboxes page, the email is retried later, and the notice clears after the next successful send.
Next guide
REST API quickstart