Sendgrid sending email but many are being deferred: status code 202 - email

We are using sendgrid to send a weekly newsletter to about 50k emails. We have an authenticated domain as well as two of our own IP addresses. Our script batch sends 500 emails at a time to all the addresses with personalization. However, when we run the script, many of the emails are being processed and then being deferred according to sendgrid logs. The response is 202. Some emails receive the newsletter but others do not. Any suggestion on how to resolve this issue?

Twilio SendGrid developer evangelist here.
I would certainly follow flaxon's advice, check the dashboard and see what it says about your delivery as well as bounces or spam reports. There is a good article here on what being "deferred" means too.
I would also look into SendGrid's Marketing Campaigns. It is a better way to send bulk email, like to your 50k email list, than making several requests as you describe.

Related

Sending emails with the same address via both SendGrid and Google Workspaces

I'd like to send emails programmatically via SendGrid (from admin#mydomain.example.com), but have replies to that email come to my Google Workspaces inbox for admin#mydomain.example.com). I would then like to reply to the customer from Google Workspaces.
The closest question related to this I could find is Setup | G Suite + Sendgrid for transactional email, but that was a fairly different use-case.
So in my usecase, emails to the customer would come from admin#mydomain.example.com via EITHER SendGrid or Google Workspaces.
Here's a article from MailGun that talks about a similiar pattern
My questions:
Will this result in deliverability issues, having emails sometimes come with different signing keys/domains? I don't understand email signing particularly well.
Is there anyway to have replies to the email address go to BOTH SendGrid and Google Workspaces, so I'll have it in my inbox but can also get it posted to a webhook by SendGrid? I think the answer is no, but figured I'd ask.
Any other considerations I should keep in mind for this strategy? Is this a poor idea for some reason?
Thanks!
Yes, this will result in deliverability issues. You should use the same domain for both sending and receiving.
No, you can't have replies go to both. You can have replies go to a webhook, but you can't have them go to both a webhook and a mailbox.
Final consideration: This is a poor idea. You should use the same domain for both sending and receiving. If you want to use SendGrid, you should use SendGrid for both sending and receiving. If you want to use Google Workspaces, you should use Google Workspaces for both sending and receiving. You can't use both at the same time.
Another consideration: If you're sending a lot of emails, you might get flagged as a spammer if you're sending from multiple domains.
The company I work for does something similar that might be helpful for your scenario.
We have a number of systems that send emails via SendGrid e.g. Auth0, Salesforce, various bespoke systems, etc. Some of these use native integrations to SendGrid, some use SMTP relaying, and others send emails programatically via the SendGrid API.
We've implemented sender auth (i.e. DKIM) in SendGrid for our domain e.g. mydomain.example.com, but we don't handle replies in SendGrid as we want replies to go to a different system - specifically our contact center system (which is the main systems our help desk staff use). Help desk staff would then reply to emails from within the contact center system. Note: we needed to configure DKIM for both SendGrid as well as the contact center system (as both currently send emails from mydomain.example.com), but in the future the intent was to implement a SMTP relay in the contact center system (to SendGrid) so that all sending goes through SendGrid.
I'm a bit fuzzy on the fine-grained implementation details of how we handle replies, but essentially we point the (single) MX record for mydomain.example.com to a third-party email protection system which scans the emails and forwards them to Office 365 mailboxes which subsequently forwards them to our contact centre system. I believe Office 365 is really only there for email posterity. AFAIK you should be able to point the MX record to anything that can handle SMTP.
In your scenario you should be able to configure the MX record for the mydomain.example.com domain to point at your Google Workspaces. This will allow you to send emails from SendGrid and use Google Workspaces to handle the sending and receiving of replies.
Not sure if you can configure SMTP relaying in Google Workspaces (i.e. to relay through SendGrid), but this would mean you'd only need to configure DKIM for SendGrid. All emails would be sent by SendGrid and replies would be go to Google Workspaces.

How does third party send bulk emails from gmail?

Gmail has a 24 hour rolling period limit of 2000 emails, outlook has a limit of 1000 emails and all other service providers has a limit.
How does Saleshandy and sendpluse send almost 10k emails per day from gmail when the limit exists? What should I do if I want to send such number of emails? Is it possible using python?
Gmail and outlook both do indeed have certain restrictions and limits when it comes to the number of emails that can be sent out in a day; unfortunate I know.
I am Vatsal from SalesHandy, and I will explain the process of sending 10,000 emails from Gmail (& outlook) all at once.
SalesHandy’s mass mailing feature with automated follow-up lets you schedule as many emails as possible and yes, we are talking more than 10,000 emails too.
We mentioned that you can schedule all of these emails to be sent at once, but the sending will be limited by your email service provider's daily email sending limit. It is not recommended to email blasts at once because it may harm your email account's reputation and cause your emails to end up in the recipient's spam box.
Mail Merge Campaigns can be sent using SalesHandy.
If you wish to know more on how exactly one goes about this process, you can read our detailed blog here - Gmail / Outlook.
Feel free to ask me any other questions you have! :)

SendGrid smtp not sending to Yahoo, AOL, or Verizon.net but sends to Gmail?

(Disclaimer I'm fairly new to development in general and this is my first StackOverflow post all and any feedback is greatly appreciated.)
I'm posting here because I'm on a free SendGrid account and their support team has yet to get back to respond and it's been over a week and I'm dying to solve this issue.
Currently, I'm using Sendgrid as an SMTP and recently my emails have stopped sending to the following esp Yahoo, AOL, and Verizon.net but emails send to Gmail just fine.
Because emails still send to Gmail I used "Email Header Analyzer" via mxtoolbox.com to review and meet the recommendations provided. Which I have implemented on. (See screenshot)
The only thing not checked off is the "DKIM Authenticated" in which it's my understanding that when you verify the domain you're using to send emails with SendGrid takes care of that for you.
It's not the email function itself because it sends just fine to Gmail.
My question is has anyone else experienced this issue? If so what was the fix you did that made it work?
Screenshot of my email header analyzer results:
Turns out that my SendGrid account was over the daily email sending limit for the "free plan" and the emails that were sent correctly to Gmail had been doing so because of a pre-existing mail function (not using SendGrid even though SendGrid was still logging these emails).
I figured out this was happening by looking at the "mailed-by:" info when you toggle the drop-down above the email just under the sender email address. Mailed-ByView With SendGrid it would say "mail-by: sendgird.net" SendGird-Mailed-ByView
It would have been nice if SendGrid made my sending limit information a little more apparent but you can find this information about your account by going to "Settings">"Account Details">"Your Products." YourProductsView

Sendgrid - Activity says email delivered but email not received

I tried to send an email through sendgrid. I have a custom domain myself#contoso.com. If i try to send an email to user1#gmail.com with the from address as myself#contoso.com,then,the email is delivered to gmail with "via". When i try sending email to myself#contoso.com with the from address being myself#contoso.com the activity says the email is delivered however, in outlook client i have not received the email. What is it that I can try or do?
I have tried whitelisting contoso.com but it did not work
This is not an answer, as it doesn't help work out why the emails that are "Delivered" have not been received, but this is SendGrid's note on why Email messages with the “Delivered” status are not received:
Twilio SendGrid posts the Delivered event after the destination server accepts the message with a 250 OK response. Once an email is accepted by the destination server, we are unable to see what happens to the message. The receiving server could send it to the inbox, queue it for later delivery, put it into the spam folder, etc.
Often times, a recipient domain will initially accept a message for delivery, and then apply additional filtering afterwards. In this situation, we would have posted the Delivered event, but not have any insight into the additional filtering. Any additional Twilio SendGrid events for your email message would be triggered by recipient engagement (i.e. open/click events, unsubscribes, etc.).
Also note that at the time of writing, that answer had 26 downvotes (and zero upvotes) on the SendGrid website, probably indicating that many other users have experienced this problem.
I had several issue solving this problem. The most important part is to set "Sender Authentication" from sendgrid to your domain dns. There is a instruction here. I'm using godaddy, so the link to set dns is https://dcc.godaddy.com/manage//dns .

How to track if an recipient responded to an email with amazon ses or other provider

Hey all thanks in advance for the look.
We are attempting to develop a drip campaign email platform. For each "drip"we need to detect if the recipient replied to the email.
If so we would like discontinue the following drips.
For this we need some sort of reply detection but everything I have seen about tracking email metrics online is related to bounce rate and open rate.
Not much available on reply rate in terms of how to build such functionality.
Preferably we would like to do this on Amazon SES but if there is no such option we are willing to look at other smtp providers.
Perhaps there is some unique header we can save with the outbound email, then check against all the inbox emails. I guess this relates to how do email clients know to thread emails - perhaps it's a similar process.
Yes, you can fetch/read the email replies.
For that you will have to create 'Rule Sets' within the 'Email Receiving section' of SES.
The replies can be redirected to services like S3, SNS,Lambda, workmail to name a few and then you can read those from that redirected service