<img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1822615684631785&amp;ev=PageView&amp;noscript=1"/>

How to send high volume cold email [beyond Gmail’s limits]

High Volume Cold Email

If you’re a cold emailer using any cold email platform other than mine, you’re likely subject to limits in the hundreds of emails per day. For most people, that allowance of a few hundred emails/day is enough, since it’s quite hard to find more than even 100 targeted prospects’ email addresses per day, where your message is relevant enough to the prospect that it doesn’t seem spammy.

But, let’s say you’re just that good at finding leads and capturing email addresses. Let’s go crazy here for a second and say you’ve fine-tuned a process that brings in 5,000 new email leads per day, and every day, you want to email these 5,000 email addresses and set a follow-up sequence that sends every few days until they reply. Now you’re in deep, because not only do 5,000 new email messages need to send every day, but once the follow-up schedules start to kick in, you’ll actually be sending more than 5,000 emails/day, when you take into account the original message volume and the follow-up email volume.

So, given G Suite’s limits of 2,000 emails/day and most cold email platforms’ own limits, how can you accomplish this?

You could set up multiple G Suite accounts and eventually send 2,000 emails per day per account. However, as years of experience has shown, it doesn’t always work so smoothly, and often times G Suite caps an account’s sending volume at a level much lower than 2,000 emails/day. This can work for some users but won’t work for most.

Last year, I invented a way to integrate an SMTP service into a high volume cold email process such that you can send as many emails as you want through an SMTP server like SendGrid, while preserving the ability to detect replies and send follow-up emails to non-responders. We do this through a little bit of inventiveness in how we relay the emails through an SMTP and sync the data back to your G Suite account.

Recent High Volume Cold Email Campaigns

Here is a sampling of recent large cold email campaigns sent by our platform in the last few weeks. Included are the number of auto follow-up stages and the open and reply rates. Some of these were distributed in daily batches via Gmail and some were sent via a third party SMTP relay.

This cold email campaign data is updated daily.

From AddressSubjectFollow-up StagesRecipientsOpen RateRepliesDate
[email protected]O___R | 2__4 1__0 S_______o - {___}12,64899.7%4102/13/24
[email protected]C_______a el A______r de u_a N___a E_a E_______a c_n l_s S________s de IA y XR de E_N R_____y22,04061.3%1402/16/24
[email protected]F_____e I________n f_r {____________________: C_______d F_______l F__________, B_______g a_d M______g (_____) C___________n111,77260.3%5402/14/24
[email protected]{_____} X R_______E F__4 S______M43,06160.1%11602/15/24
[email protected]{___________} {____} > R___e {_______} S___R l____s by up to 2_% in 9 w___s27,37759.3%1502/10/24
[email protected]C_E P___t O__________: G_____, C___________y a_d ‘___________l S_____’12,26154.3%11302/16/24
[email protected]F____r im S__p12,00049.7%4402/11/24
[email protected]We s_____d y__r IG a_d w__t to o___r a C____b13,24748.8%12102/14/24
[email protected]R_: L________n S_____t12,29347.1%002/13/24
[email protected]N_w H______l L______g P______s18,79346.4%17902/15/24
[email protected]{____t N____, W____s “__e B___” A_______? (2 N_w V_____! P__s & C___)13,87144.0%402/11/24
[email protected]S______l O___________s23,50040.8%2802/15/24
[email protected]N_w L______g P______s110,26039.0%16702/15/24
[email protected]B_____e <> {_______}22,92837.6%3102/14/24
[email protected]Q___e f_r y__r p__________l c______g26,59835.3%4902/12/24
[email protected]O__________: G____e S____t V__w 2__4 M____d14,21134.7%13602/12/24
[email protected]{____________________} P______n22,08731.3%5902/14/24
[email protected]b__t d______w in n___h a_____a - P______, S___, B_________e J__f H_____n B____d S______s38,56330.6%602/15/24
[email protected]C_O i______: m__s n__d a c____h37,69330.4%14402/14/24
[email protected]F______y C______g p______l22,58025.2%4202/12/24

Steps to sending high volume cold email:

  1. Set up your G Suite account, and connect it to GMass.
  2. Set up a SendGrid account or any other SMTP service and subscribe based on the daily volume of emails you want to send. When determining daily volume, take into account the original message plus follow-up emails that need to go out per day.
  3. Connect SendGrid, or your alternate SMTP service to GMass.
  4. When you launch your cold email campaign in GMass, set the SMTP option instead of Gmail.
  5. Configure your auto follow-ups.
  6. Hit the GMass button to launch the campaign.

What happens next?

Even though your emails are being sent by SendGrid, you’ll still see a copy of each individual email in the Sent folder of Gmail. When someone replies, the reply will still be threaded to the same conversation as the email in the Sent folder. And if someone doesn’t reply, and a follow-up email sends automatically in a few days, that follow-up will also be threaded to the same email conversation.

But wait, I’m not technical enough to set up SendGrid!

If setting up your own SMTP service is too complicated, and you don’t want to bother with the implications of DNS records, SPF, DKIM, DMARC, and all the subtleties that are recommended for deliverability, you have a couple of options:

  1. Sometimes we allow users to use our SMTP service — but typically for cold email that isn’t opt-in, we don’t.
  2. There’s a fiverr gig these days where someone will help you configure a SendGrid account for use with GMass.
  3. You sign up for SendGrid and subscribe, and then send us your credentials and we’ll link GMass to SendGrid for you.

By the way, if you’re an advanced web developer and this all sounds to easy for you, you may want to read my technical review of SendGrid to take a look under the hood and see if you want to customize your SMTP process. That review is written specifically for advanced web developers. 

How high is our volume?

When you’re shopping different cold email platforms, ask them how much email they send. Then check our real-time counter for how much email we’ve sent. We’ve sent over 1 billion emails through Gmail and G Suite accounts. Not all of them were cold email campaigns, but a lot of them were.

See why GMass has 300k+ users and 7,500+ 5-star reviews

Email marketing. Cold email. Mail merge. Avoid the spam folder. Easy to learn and use. All inside Gmail.


Download Chrome extension - 30 second install!
No credit card required
Love what you're reading? Get the latest email strategy and tips & stay in touch.

  1. Do I need the paid version of SendGrid? If so what particular feature is it that is not available on the free version that I am paying for? Is this something that would be resolved if I simply use HubSpot or MailChimp?

  2. Great article. Do you think the age of the domain and/or the email address affects the results when using GMass
    and SendGrid?

    1. Hi Peter,

      Yes, it could affect deliverability. Even though the emails are being sent using an external SMTP, the from address would still be tied to the email address’s domain. So the email address and domain’s reputation would still play a part on deliverability. However, we couldn’t say how big of a part it does play.

  3. i have a single gmail acount
    i want to send more than 5000 emails per day,
    can you suggest me in a easy way how can i send?

  4. Hello GMASS,

    Could you please provide me with alternative methods to pay my credit card? I’m experiencing some buffering issues and it’s not giving me any results.

    If you provide me GPAY option or UPI option that will be easy for me to make payment.

Leave a Reply

Your email address will not be published. Required fields are marked *

Join the 300,000+ others using GMass to send their best emails ever

Install in 30 seconds — no credit card or sign up form required

Try GMass for free Then check out the quickstart guide to send your first mail merge email in minutes!


Share This