# Sendgrid blocking some addresses

**URL:** <https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243>\
**Category:** Plugins\
**Created:** [March 7, 2017, 3:48pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243 "2017-03-07T15:48:02Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![ryanck](https://avatars.discourse-cdn.com/v4/letter/r/13edae/32.png) [@ryanck](https://forum.bubble.io/u/ryanck)\
**Post date:** [March 7, 2017, 3:48pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/1 "2017-03-07T15:48:02Z")

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Hi there,

I´m having issues with Sendgrid since sometimes I get a “block” in the activity feed so the email is not sent.

Does anyone know how to solve this?

Thanks a lot.

 ![](https://us1.discourse-cdn.com/bubble/original/2X/1/10945a79ce7cc303fff70a21201434988eda5ed3.png)

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**Author:** ![copilot](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/copilot/32/32859_2.png) [@copilot](https://forum.bubble.io/u/copilot)\
**Post date:** [March 7, 2017, 4:06pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/2 "2017-03-07T16:06:13Z")

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Hey @ryanck,

Take a look at SendGrid’s documentation on Blocks. 🙂

> **[Blocks](https://sendgrid.com/docs/glossary/blocks/)**
>
> Blocked emails happen when your IP address has been added to a blacklist or has been blocked by an ISP or messaging organization.

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<div class="post-metadata">

**Author:** ![ryanck](https://avatars.discourse-cdn.com/v4/letter/r/13edae/32.png) [@ryanck](https://forum.bubble.io/u/ryanck)\
**Post date:** [March 7, 2017, 4:07pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/3 "2017-03-07T16:07:22Z")

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Thanks @iamsalar,

I´ve seen that, the problem is that I don´t know how to fix this.

Is there any way?

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**Author:** ![copilot](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/copilot/32/32859_2.png) [@copilot](https://forum.bubble.io/u/copilot)\
**Post date:** [March 7, 2017, 4:08pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/4 "2017-03-07T16:08:44Z")

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SendGrid seems to suggest investigating the cause of the Block. What have you discovered there?

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<div class="post-metadata">

**Author:** ![ryanck](https://avatars.discourse-cdn.com/v4/letter/r/13edae/32.png) [@ryanck](https://forum.bubble.io/u/ryanck)\
**Post date:** [March 7, 2017, 4:09pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/5 "2017-03-07T16:09:39Z")

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For now I´ve just discovered that it happens with hosted email accounts but for gmail, yahoo, hotmail, outlook, … it works.

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**Author:** ![copilot](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/copilot/32/32859_2.png) [@copilot](https://forum.bubble.io/u/copilot)\
**Post date:** [March 7, 2017, 4:59pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/6 "2017-03-07T16:59:17Z")

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The question was more so about the reason for the block. 🙂

From the SendGrid documentation: _“The “Reason on the Block” will clarify what the exact reason is.”_

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<div class="post-metadata">

**Author:** ![ryanck](https://avatars.discourse-cdn.com/v4/letter/r/13edae/32.png) [@ryanck](https://forum.bubble.io/u/ryanck)\
**Post date:** [March 7, 2017, 4:59pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/7 "2017-03-07T16:59:48Z")

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Ah yeah I´ve got an 550 error all the time.

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<div class="post-metadata">

**Author:** ![copilot](https://sea1.discourse-cdn.com/bubble/user_avatar/forum.bubble.io/copilot/32/32859_2.png) [@copilot](https://forum.bubble.io/u/copilot)\
**Post date:** [March 7, 2017, 5:04pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/8 "2017-03-07T17:04:37Z")

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For reference, here’s what SendGrid defines as Error Code 550:

> ##550  
> The user’s mailbox was unavailable. Usually because it could not be found, or because of incoming policy reasons.

> Examples:

> 550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient’s email address for typos or unnecessary spaces.  
> 550 Requested action not taken: mailbox unavailable  
> 550 5.1.1 \<address@aol.com\>: Recipient address rejected: [aol.com](http://aol.com)  
> What to do with this response:It’s probably a good idea to take addresses that throw this response off of your main list, as it’s likely a bogus address or one that was mistyped.

Seems to be tied directly to recipient fields. We’ve personally never had a blocking issue before.  
Reach out to SendGrid to get their take on it and see where it goes from there.

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<div class="post-metadata">

**Author:** ![ryanck](https://avatars.discourse-cdn.com/v4/letter/r/13edae/32.png) [@ryanck](https://forum.bubble.io/u/ryanck)\
**Post date:** [March 7, 2017, 5:24pm UTC](https://forum.bubble.io/t/sendgrid-blocking-some-addresses/11243/9 "2017-03-07T17:24:01Z")

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Yeah I´ll do that.

I´m thinking this Sendgrid thing is not as easy as I thought it will be.