Discover / api.reletter.com

Reletter API

□ No challenge detected

Newsletter data API. Search 7M+ email newsletters, fetch metadata, contacts, social accounts and rankings, and full-text search newsletter issues. Agents can buy access programmatically over HTTP 402 / MPP without signing up.

Challenge detected
0 of the last 8 checks
Last checked
17 Oct, 08:59 UTC
In our index since
6 Oct 2026

Endpoint

curl -i https://api.reletter.com/api/payments/buy
# 402 Payment Required: pay with a MPP client, then send the request again.
17 listed endpoints · on mppscan

Checks and payment terms on this page refer to the endpoint above. Other listed endpoints have not been checked individually.

Base URLhttps://api.reletter.com

  • GET/api/publicationsNo price listed
  • GET/api/chartsNo price listed
  • GET/api/payments/bundlesNo price listed
  • GET/api/accounts/quotaNo price listed
  • GET/api/contactsNo price listed
  • GET/api/search/publicationsNo price listed
  • GET/api/search/issuesNo price listed
  • GET/.well-known/paymentsNo price listed
  • GET/api/issues/{issue_id}No price listed
  • POST/api/payments/buyNo price listed
  • GET/api/search/autocompleteNo price listed
  • GET/api/issuesNo price listed
  • GET/api/misc/statsNo price listed
  • POST/api/payments/cancelNo price listed
  • GET/api/charts/{platform}/{category}No price listed
  • GET/api/publications/{publication_id}No price listed
  • GET/api/misc/languagesNo price listed

A dash means the listing gives no price or method. Copy buttons copy the full URL.

Showing 17 of 17 listed endpoints.

Agents can find it through the Superstables MCP server and JSON API: GET /api/v1/services/api.reletter.com

Recent checks

6 Oct 2026One bar per check, showing up to 20 recent checks. Coloured bars show relative response time, with a minimum visible height; full-height grey bars mean no challenge was detected. “Challenge detected” means HTTP 402 or another detected payment-challenge signal.17 Oct 2026
All 8 checks
When (UTC)ResultHTTPResponse
17 Oct, 08:59 UTCNo challenge detected405542ms
15 Oct, 23:42 UTCNo challenge detected405150ms
14 Oct, 14:31 UTCNo challenge detected40590ms
12 Oct, 10:53 UTCNo challenge detected40597ms
10 Oct, 15:44 UTCNo challenge detected4051107ms
9 Oct, 09:34 UTCNo challenge detected405101ms
8 Oct, 03:32 UTCNo challenge detected405172ms
6 Oct, 21:30 UTCNo challenge detected405130ms

Questions

Did our last probe detect a payment challenge?

No. At our last probe on 17 Oct, 08:59 UTC, we detected no payment challenge.

What payment terms does Reletter API advertise?

The listing advertises MPP, Tempo and USD. Check the seller's current payment challenge and authentication requirements before paying.

Where is Reletter API listed?

In mppscan. Superstables first indexed it on 6 Oct 2026.

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