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Major Email Bug: Exposed Addresses and Wrong Names in Mass Send | Lindy Community

Major Email Bug: Exposed Addresses and Wrong Names in Mass Send

·Jul 11, 2025 07:43 AM·

Ah- major bug! This has never happened before. I set up a simple flow to send an email to each individual in a spreadsheet. instead of doing so, its sent the email to everyone at the same time- thus exposing everyone's emails to each other. It's also put {first name} instead of their actual first name even though when I set it up as draft it put their actual name 😭 https://chat.lindy.ai/charlotte-boundys-workspace/lindy/new-lindy-10-6870bbe3bcf835eeaa0cf145/editor?e=6870bc05521678e97275f667

4 comments

· Sorted by Oldest

Jeremy M.
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Hi Charlotte 👋 You set the to value of the send Email action to each contact in the sheet so the AI put all the values in the to field. If you want to process entries from the sheet one by one, I recommend to use a Loop and put the Send Email inside the Loop. This article should be helpful: https://www.lindy.ai/academy-lessons/looping
🔥1
Charlotte B.
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Oh man :( I’ve never actually manually set the ‘To’ section before - I usually leave it up to the AI. But because I was paranoid about it doing what it just did I set it manually to “each contact” 🤦‍♀️
Charlotte B.
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Thank you for coming back to me so quickly
Jeremy M.
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On this task, both {first name} and {company} are not being replaced. I suspect the AI couldn't determine which first name and company name to use since there are many recipients. With looping, you shouldn't have trouble as it will process emails from the spreadsheet one by one! What I recommend here for your use case:
use loop to send email one by one
test with another spreadsheet with fewer emails (or use the limit parameter and change it from 100 to 3 for example)
Put the Ask for Confirmation boolean too true for the Send Email action so you can review the email drafted by the AI before sending it. When everything works like a charm, you can toggle of the Ask for confirmation ✌️
If during the testing phase with the Ask for confirmation at true you see unexpected behavior (like the company or first name being incorrectly replaced), you'll need to customize the prompt for the body field a bit.