Mass Email Program or Add On

[AnPeter90]

Does anyone know of a program or a Thunderbird add on where I can have it send around 100 emails an hour. I only have 630 emails, so it won't be too many cycles.

 

[MxyzptlkFishStix]

Mail Merge + your CSV file.

 

[David Williams]

I don't see any tool or addon like your requirement. If it's suitable, you may try some free plan of some provider such as MailChimp. It's enough for your amount