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What tool can you recommend to send thousands of cold emails per day?

We have been using SendGrid and it worked really well but now they are complaining and telling us that we need to stop

author Tiago Ferreira

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21 Answers

I’ve used Amazon SES before but never sent thousands of emails. I’m sure they can handle the volume. I don’t know about policies on cold emails though. <https//aws.amazon.com/ses/>

writen by James Trimble

be careful with SES, you need to keep the bounce rate below 5% and it might be quite complicated.

writen by Luca Restagno (ikoichi on Twitter)

why not use one of the gazillions cold emailing services?

writen by Luca Restagno (ikoichi on Twitter)

I never used one, but they should take care of everything (at a price).

writen by Luca Restagno (ikoichi on Twitter)

most of the services either have a very short limit or do not allow for cold emails…

writen by Tiago Ferreira

The fact they are asking you to stop should tell you something

writen by Maxwell Davis

what do you mean Maxwell Davis?

writen by Tiago Ferreira

Can I actually create my own SMTP server? Wolfgang Gassler any ideas here?

writen by Tiago Ferreira

You can but delivery rates from a private server are not as good and it’s easier to get flagged as spam from what I’ve been told.

writen by James Trimble

hmmm. might still be a good option for us… everyone is turning us down XD

writen by Tiago Ferreira

We had this before, you can do that but you have to keep in mind the following (apart from the SMTP server maintenance):

  1. With so many recipients the content for each should be very individual/personalized
  2. The emails should be sent with a greater delay
  3. The email volume should be partitioned over several days to keep the volume down and do a warm-up by gradually increasing the volume (and at best gradually decrease, again)
  4. Your provider (or your domain/email config) should be highly rated and support things like DMARC, SPF and DKIM
  5. It might help to use different addresses with low volume each but imho they should be from the same domain
  6. Make sure the receiver addresses are valid (verify before sending)
  7. Plain text often has a better reputation than html. At least use both
  8. Better not to use tracking pixels (individual links should be fine)
  9. No attachments
  10. Avoid spammer phrases (free offer, Viagra , …)
  11. Track bounces and remove every receiver you get a bounce from

writen by Benedikt

This is super valuable :) How can I validate the emails before sending?

writen by Tiago Ferreira

Basically like this: • First, check for email address format. • Then make sure that the domain name is valid. You should also check whether it’s a disposable email address or not. • In the final step, use the MX records from the domain records and connect to the email server (over SMTP, additionally simulate sending a message). This is to make sure the mailbox really exists for that user/address. Some mail servers do not cooperate in the process, in such cases, the result of this email verification may not be as accurate.

writen by Benedikt

> most of the services either have a very short limit or do not allow for cold emails… What do you mean? Have you tried one of these?

writen by Luca Restagno (ikoichi on Twitter)

How do you know all this stuff about email Benedikt ? 😊 Did you send thousands of emails?

writen by Luca Restagno (ikoichi on Twitter)

Most of these services simply connect to your email server and therefore have to comply with it’s limits. Services like SeS or SendGrid have their own server but are only for transaction email. They do not accept cold emails

writen by Tiago Ferreira

Luca Restagno (ikoichi on Twitter) I sent a few 100 once. But I’m just very interested in email tech so I keep track of those things

writen by Benedikt

hey <@U02NH9BN5FY>. How different must the domain be? can it be simply http://podsqueeze.ai|podsqueeze.ai?

Also, isn’t it better to use http://podsqueeze.com|podsqueeze.com since that domain is already warm?

writen by Tiago Ferreira

Just another TLD. But if I remember correctly even a subdomain can work. Have to double check that, though. You could also register podsqueeze.mail

writen by Benedikt

dos the warmup take longer if its a new domain?

writen by Tiago Ferreira

Yes you should start with way less volume

writen by Benedikt

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