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Comment by marceldegraaf | Hacker News Reader

@patwalls a note regarding Sendgrid. As a user of their free tier (for a freelance job) I was recently bitten by a shared IP that was put on a block list, probably due to abuse by another Sendgrid user.

Support does not migrate accounts on the shared IP pool to another IP, basically leaving me unable to send email for days.

Might be worth upgrading to their Pro plan ($90/mo). This gets you your own dedicated IP so this won't bite you in the future.

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Dedicated IPs can be worse for low senders, as there's no other legitimate volume coming through outside of your own, so you need to build and maintain your own reputation entirely.

Ideal solution would be a provider that only allows trusted people on shared IPs. Generally a non-free provider will be best for that.

This is why you pay for their services. Companies like SendGrid, MailChimp, AWS, etc, know how to best mitigate this and have relationships a single person can't have. They do a lot on their platforms to prevent abuse.

how is building and maintaining your own reputation a problem for low volume sender?

If you don’t build a reputation your emails won’t get delivered. New IPs have no reputation, so your users will suffer.

I’m using Mailgun on the free plan with some small orgs, got bit by the shared ip thing.

A quick note to their support and they switched the free plan to a new ip. Zero hassle.

> Sendgrid. As a user of their free tier (for a freelance job) I was recently bitten by a shared IP that was put on a block list, probably due to abuse by another Sendgrid user. Support does not migrate accounts on the shared IP pool to another IP, basically leaving me unable to send email for days.

Same problem here with SendGrid, very annoying. Answer of the SendGrid support:

> I have looped in our Compliance team to start the delisting process. I am unable to provide you with an exact ETA for when this will be complete

After days it's still not resolved, and emails still bounce for all recipients at Hotmail.

The only solution seems to be the $90/mo plan with dedicated IP... Pretty expensive for < 5,000 emails per month.

I had the same issue recently as well and have since started using Postmark successfully.

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