I don't think Thunderbird sets the quota, I think your mail service provider sets it. But I suppose you could confirm from the message itself who or what is the source of the quota.

Isha_Khanduja said

After sending 350 mails by mail merge, i am getting daily quota excedded error. I have to do email marketing. and have to send 2000 email per day by thunderbird. Plz give me a solution as soon as possible.

how can i konw that who have set the limit, my mail service provider or thunderbird

What does the message say and who is it from?

jscher2000 said

What does the message say and who is it from?

It's a text mail. i am sending 50 mails at a time by mail merge.

Isha_Khanduja said

jscher2000 said

What does the message say and who is it from?

It's a text mail. i am sending 50 mails at a time by mail merge.

An (SMTP) error occurred while sending mail. The server responded: 5.4.5 Daily sending quota exceeded. bd5sm39911027pdb.41 - gsmtp.

I am getting this error.Now tell me what to do

well it is self explanatory.

You have exceeded your quota. The server sets the quota - there are no limits in Thunderbird.

Many servers set limits on number of emails sent per hour or per day. These limits can vary depending upon the server and the type of account you have purchased.

for example: https://support.google.com/a/answer/166852?hl=en scroll down to see more info under the section: Recommendations for sending bulk email

https://productforums.google.com/forum/#!topic/gmail/a47sN1ISKaE

How can i increase my email sending quota.????

This has nothing to do with Thunderbird. Talk to your provider.