Limits and lifetimes
Everything a sender or an inbox owner needs to know before pointing an application here: sizes, lifetimes and quotas of this instance.
Sending mail
| What | Value | What it means |
|---|---|---|
| SMTP endpoint | mailtrap.kaberdin.com · port 2525 | Point your application here. Any recipient address is accepted: nothing is ever delivered. |
| Largest message | 30 MB | Bigger messages are refused by the server with SMTP error 552. |
Attachments
| What | Value | What it means |
|---|---|---|
| Stored on the server | up to 10 MB | Served through a signed link that only the inbox owner can open. |
| Bigger attachments | listed, not transferred | Files over 10 MB appear in the message with their name and size only. |
| Attachment lifetime | 1 h | Deleted automatically after this time. |
| Download link lifetime | 5 min | Each link is signed and expires on its own. |
How long data lives
| What | Value | What it means |
|---|---|---|
| Captured emails and webhook requests | 30 days | Removed by the nightly cleanup, together with their attachments. |
| Traffic log | 180 days | Page views for the owner statistics; IP addresses are stored only as a one-way hash. |
Sharing and export
| What | Value | What it means |
|---|---|---|
| Share link lifetime | 24 h by default | Pick another window when you create a link, and revoke it at any time. |
| Machine-readable export | 50 items | Per share link, for scripts and AI assistants. |
| Items per page | 25 |
The owner of this instance sets these values in .env: what you see here is always the current configuration.