Retrieve all blocks

Blocks happen when your email is rejected because of an issue with the message itself rather than an issue with the recipient's address.

There are several causes for blocked emails. For example, your mail server IP address may be blocked by an ISP, or the receiving server may flag the message content using a filter. Twilio SendGrid will not suppress future messages to blocked addresses by default.

For more information, please see our Blocks documentation.

You can also see your Blocks in the Suppressions settings menu of the Twilio SendGrid App.

GET/v3/suppression/blocks

Base url: https://api.sendgrid.com (for global users and subusers)

Base url: https://api.eu.sendgrid.com (for EU regional subusers)

This endpoint allows you to retrieve a paginated list of all email addresses that are currently on your blocks list.

You can use the limit query parameter to set the page size. If your list contains more items than the page size permits, you can make multiple requests. Use the offset query parameter to control the position in the list from which to start retrieving additional items.

To perform a request for the first page of the paginated list of all blocks using the default page size, you can omit the limit and offset query parameters:

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const client = require("@sendgrid/client");
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client.setApiKey(process.env.SENDGRID_API_KEY);
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const request = {
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  url: `/v3/suppression/blocks`,
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  method: "GET",
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};
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client
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  .request(request)
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  .then(([response, body]) => {
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    console.log(response.statusCode);
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    console.log(response.body);
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  })
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  .catch((error) => {
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    console.error(error);
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  });

If you want to specify a page size of your choice, you can use the limit query parameter. Assume you want a page size of no more than 5 items per request, to retrieve the first page you can use the limit parameter without specifying an offset:

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const client = require("@sendgrid/client");
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client.setApiKey(process.env.SENDGRID_API_KEY);
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const queryParams = {
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  limit: 5,
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};
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const request = {
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  url: `/v3/suppression/blocks`,
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  method: "GET",
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  qs: queryParams,
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};
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client
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  .request(request)
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  .then(([response, body]) => {
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    console.log(response.statusCode);
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    console.log(response.body);
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  })
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  .catch((error) => {
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    console.error(error);
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  });

If you want to retrieve items beyond the first page, you can use the offset parameter as follows. Assume you are still working with a page size of 5 as determined by your limit query parameter and you have more than 15 items. To request the fourth page of items, you can use the offset parameter to skip over the first 15 items, i.e. you start retrieving items starting after the first three pages of 5 items each:

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const client = require("@sendgrid/client");
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client.setApiKey(process.env.SENDGRID_API_KEY);
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const queryParams = {
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  limit: 5,
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  offset: 15,
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};
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const request = {
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  url: `/v3/suppression/blocks`,
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  method: "GET",
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  qs: queryParams,
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};
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client
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  .request(request)
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  .then(([response, body]) => {
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    console.log(response.statusCode);
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    console.log(response.body);
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  })
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  .catch((error) => {
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    console.error(error);
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  });

The code samples below show how to use the email query parameter to filter the Block records returned by the GET request. A Block record is included in the results if the Block's email property starts with the value of the email query parameter. One or more %25 wildcards can be used in the email query parameter.

Any reserved characters should be percent-encoded to avoid any unintended encoding/decoding of characters.

The code sample below shows examples of how to GET all Block records with email properties that begin with the string "sales".

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const client = require("@sendgrid/client");
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client.setApiKey(process.env.SENDGRID_API_KEY);
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const queryParams = {
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  email: "sales",
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};
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const request = {
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  url: `/v3/suppression/blocks`,
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  method: "GET",
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  qs: queryParams,
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};
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client
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  .request(request)
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  .then(([response, body]) => {
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    console.log(response.statusCode);
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    console.log(response.body);
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  })
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  .catch((error) => {
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    console.error(error);
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  });

This request would return Blocks with email addresses that start with "sales", such as salesteam@example.com or sales@example.com.

The code sample below shows examples of how to GET all Block records with email properties that contain the string "sales" anywhere in the email address.

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const client = require("@sendgrid/client");
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client.setApiKey(process.env.SENDGRID_API_KEY);
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const queryParams = {
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  email: "%25sales",
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};
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const request = {
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  url: `/v3/suppression/blocks`,
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  method: "GET",
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  qs: queryParams,
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};
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client
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  .request(request)
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  .then(([response, body]) => {
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    console.log(response.statusCode);
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    console.log(response.body);
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  })
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  .catch((error) => {
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    console.error(error);
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  });

This request would return Blocks with email addresses that contain "sales" anywhere in the email address, such as george@sales.example.com or sales@example.com.