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Server warmup still needed if using an SMTP service?

by perneali45
3 replies
Hi!

I have a list of email subscribers. I was using an email service, but am not happy with it.

What happens if a mailing software is set up on a new server, that has never sent email before, but the software sends email through an SMTP service like Amazon SES or Sendgrid?

Would a server warm up process still need to take place, where I start sending emails a few at a time?

Or could I start sending a lot of emails right away?

Thanks in advance!
#needed #server #service #smtp #warmup
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  • Profile picture of the author rritz
    When using SES a kind of warm up is recommended unless you want to raise a lot of red flags within amazon.

    If you are using a different smtp service like mailgun or something, you'll not have to do warm up, as these IPs are already warmed up plenty. Still, as far as I know, these smtp services have different layers of IPs.

    There are low reputation IPs and high reputation IPs and in between. When you start with say mailgun, you get assigned to a low reputation IP pool.

    Deliverability will probably suck big time in these IP pools ... for example my mailgun account cannot inbox aol - the IPs are all blocked.

    You can get into high reputation pools if your sending habits look good .. so again a kind of warm up designed to get you into better IP pools and getting better deliverability is recommended.
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    • Profile picture of the author perneali45
      Originally Posted by rritz View Post

      When using SES a kind of warm up is recommended unless you want to raise a lot of red flags within amazon.

      If you are using a different smtp service like mailgun or something, you'll not have to do warm up, as these IPs are already warmed up plenty. Still, as far as I know, these smtp services have different layers of IPs.

      There are low reputation IPs and high reputation IPs and in between. When you start with say mailgun, you get assigned to a low reputation IP pool.

      Deliverability will probably suck big time in these IP pools ... for example my mailgun account cannot inbox aol - the IPs are all blocked.

      You can get into high reputation pools if your sending habits look good .. so again a kind of warm up designed to get you into better IP pools and getting better deliverability is recommended.
      Thanks for the reply!

      May I ask which SMTP service you recommend?
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  • Profile picture of the author sendizo
    yes - warming up your sender name (or from email) is recommended. though using 3rd SMTP like SparkPost or SES is little different process of warming up - but it is simple - start with small volume like 2000 email per day and double up the volume each day- also its recommended to split the total volume per 24 hour - and not push all email at once.
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