why verification mail, forgot password mails are taking too long to reach to users sometimes?

when users are creating account, the verification emails from supabase is taking too much time to reach to users (approx. 5-6 min). Where as sometimes it coming quick like usual it should be, sane thing happening with forgot password too. Please help asap, the problem is encountered on both live site and local host .

sumitOP•9/22/25, 5:26 AM

and sometimes its saying email rate limit exceeded.

Ssumit when users are creating account, the verification emails from supabase is taking...

ibrahim•9/22/25, 5:26 AM

have you enabled a custom smtp or are you using supabase for sending this emails?

sumitOP•9/22/25, 5:26 AM

yes custom smtp is enabled

ibrahim•9/22/25, 5:28 AM

you might have to reach out to you smtp provider then to see if there are any issues

ibrahim•9/22/25, 5:28 AM

which smtp are you using? Do they provide details themselves of logs or when emails are sent?

sumitOP•9/22/25, 5:29 AM

sendgrid

inder•9/22/25, 5:30 AM

rate limit is enabled by default to protect your SMTP from abuse

inder•9/22/25, 5:31 AM

You can change the limits from your supabase dashboard

Iibrahim which smtp are you using? Do they provide details themselves of logs or when ema...

sumitOP•9/22/25, 5:32 AM

actually this is a client project i am working on, and he said to use sendgrid, and he sent me an api key to use

Iinder You can change the limits from your supabase dashboard

sumitOP•9/22/25, 5:32 AM

please guide, from where i can fix this issue

Ssumit actually this is a client project i am working on, and he said to use sendgrid, ...

ibrahim•9/22/25, 5:33 AM

i think the API key is only for use in edge functions, you would need access to Auth -> emails -> smtp settings to investigate login related issues

Ssumit please guide, from where i can fix this issue

inder•9/22/25, 5:33 AM

https://supabase.com/dashboard/project/_/auth/rate-limits

inder•9/22/25, 5:34 AM

Check your project's logs, if the log entry shows that the email was sent then its an issue with your smtp

Iinder Check your project's logs, if the log entry shows that the email was sent then i...

sumitOP•9/22/25, 5:35 AM

and from where i can see the logs?

inder•9/22/25, 5:36 AM

https://supabase.com/dashboard/project/_/logs/auth-logs

inder•9/22/25, 5:36 AM

For example, this is for magic-link

sumitOP•9/22/25, 5:37 AM

inder•9/22/25, 5:38 AM

You need to check with your SMTP. everything is fine here

inder•9/22/25, 5:39 AM

Also you can test with the supabase's inbuilt SMTP for testing one or two emails

sumitOP•9/22/25, 5:39 AM

like the smtp was just enabled few days back, but this issue was from starting

Ssumit like the smtp was just enabled few days back, but this issue was from starting

inder•9/22/25, 5:39 AM

even with inbuilt smtp?

inder•9/22/25, 5:40 AM

a minute or 2 delay is normal

Iinder a minute or 2 delay is normal

sumitOP•9/22/25, 5:40 AM

it was like 5-6 min approx

Iinder even with inbuilt smtp?

inder•9/22/25, 5:40 AM

Iinder ?

sumitOP•9/22/25, 5:40 AM

yupp

inder•9/22/25, 5:41 AM

thats strange. I just tried with inbuilt one and got an email within a minute

inder•9/22/25, 5:41 AM

Try sending email from dashboard to your email address with the inbuilt one

sumitOP•9/22/25, 5:42 AM

direct link plz

inder•9/22/25, 5:43 AM

https://supabase.com/dashboard/project/_/auth/users
Select the email and a side menu on the right side will open. There you'll find an option to either send magic-link or reset-pass

sumitOP•9/22/25, 5:45 AM

inder•9/22/25, 5:45 AM

It's email rate limit exceeded msg

sumitOP•9/22/25, 5:46 AM

so this rate limit is supabase thing?

sumitOP•9/22/25, 5:46 AM

and delay emails are from sendgrid?

inder•9/22/25, 5:46 AM

correct

Iinder https://supabase.com/dashboard/project/_/auth/rate-limits

inder•9/22/25, 5:46 AM

This is where you adjust these rate-limits

sumitOP•9/22/25, 5:47 AM

okay thankyou, boss. Now i need to guide that dumb client, that his sendgrid thing is causing the issue not supabase

Ssumit okay thankyou, boss. Now i need to guide that dumb client, that his sendgrid thi...

inder•9/22/25, 5:48 AM

Did you try sending emails with inbuilt smtp?

inder•9/22/25, 5:48 AM

There is a rate limit on the inbuilt one that is not customizable

inder•9/22/25, 5:48 AM

But its fine for testing 1 or 2 emails

sumitOP•9/22/25, 5:49 AM

so like this is a production level site, ao how can we deal with that?

inder•9/22/25, 5:49 AM

You can't. custom smtp is the way to go

inder•9/22/25, 5:50 AM

You can try brevo or resend. resend has a free plan. not sure about brevo. You can use that to guide your client that its an issue with sendgrid

sumitOP•9/22/25, 5:51 AM

okay thankyou, i will

inder•9/22/25, 5:51 AM

brevo too has a free plan

sumitOP•9/22/25, 5:51 AM

no he just want to use sendgrid, dont know why

inder•9/22/25, 5:52 AM

Just for demo purposes, you can use the inbuilt one or set up a free account on either resend or brevo and use that. On resend, until you verify your domain with them you can't send any emails to addresses other than your own email. keep that in mind. don't know about brevo.

sumitOP•9/22/25, 5:54 AM

this site is going to launch tomorrow, so we don't have time to test or demo thing, we have to fix it from what we are using

inder•9/22/25, 5:55 AM

What I meant was to show your client that its your sendgrid smtp which is causing issues and they will need to use some other SMTP

sumitOP•9/22/25, 5:56 AM

so you are saying that it cant be fixed from sendgrid side too??

sumitOP•9/22/25, 5:56 AM

ther email delay thing

why verification mail, forgot password mails are taking too long to reach to users sometimes?

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