Days-long Delays between emails “sent” and being received

  • Resolved Serafín Danessa

    (@sdanessa)


    1 year, 2 months ago

    Hey There,
    I’m using FluentSMTP with SendGrid to send emails from one of my sites.
    I’ve discovered that some users were receiving emails more than a week later, in some cases (not every email).

    Tracing those emails, I’ve found that on the FluentSTMP email logs, the sent date seems correct (See https://cloudup.com/ivgPWEFTUYA).

    However, on the SendGrid Email Activity logs, it says that their API received the call to send the email on a much later date. (See the same email info here: https://cloudup.com/i0vYprN6d3Y)

    Anyone has had a similar experience with this? Any ideas if this might be a FluentSMTP issue when sending the API call, or a SendGrid issue?

    Thanks
    S

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Support Amimul Ihsan Mahdi

    (@amimulihsanmahdi)

    Hello @sefo262,

    We did not get any such reports from our client that the emails are delayed, most probably this is site-specific issue. Can you please check whether the emails are originated from a specific plugin or not? If so, can you please mention the plugin name so that we can investigate further?

    Let me know the update.

    Thank you

    Thread Starter Serafín Danessa

    (@sdanessa)

    Hey there!

    The delays happen for multiple plugins, in my case WooCommerce Appointments, Learndash Notifications, and some FluentCRM campaigns.

    The logs on FluentSMTP say that the emails were actually sent to SendGrid, so I’m not sure how could I debug the API calls from FluentSMTP to see if they delay is there, or on the Sendgrid side.

    Are you guys using Sendgrid’s SMTPAPI, or the Web API to send the emails? Maybe that gives us some clues.
    https://docs.sendgrid.com/for-developers/sending-email/web-api-vs-smtp

    Thanks for your help
    Serafín | eLearningWP

    Plugin Author Shahjahan Jewel

    (@techjewel)

    Hello Serafín,

    FluentSMTP use SendGrid Web API which is the faster protocol than SMTP API.

    Thread Starter Serafín Danessa

    (@sdanessa)

    Hey there,
    I still haven’t found the issue here.

    The scheduled actions to fire the emails are fired at the right time, the email log on FluentSMTP says emails are being sent at that specific time to SendGrid too, but then the logs on the SendGrid say that the Processed event (When their API receives it) have been done later.

    This doesn’t happen for all emails, only for a small percentage.

    Do you have any other ideas of what can be causing the delay between the site and Sendgrid?

    Thanks

Viewing 4 replies - 1 through 4 (of 4 total)
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