Is there a limit to the number of email address one can specify using the LF email activity

asked on August 23, 2017

We have a requirement to send out an email to well over 1400 users with an information documents. Instead of sending one email per recipient, I'm trying to use a multi value token to add all the email addresses to, then use that token on the email activity's bcc address field. The activity is set to separate each value with a semi-colon ";". I tested it with a hand full of address and it works fine, but when I run it on my batch of 1400 addresses I get the following error:

(_EmailWithAttachments) The specified string is not in the form required for an e-mail address.

It is maybe worth mentioning that in the workflow I have a check with a regular expression to test the validity of the email address before I add it to the multi value token and then to only use the ones that pass the validation.

Could it be that the volume is too high?

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replied on August 23, 2017

The first thing I would recommend doing is to take the token your using, and instead of using it for the recipient address, toss it in the body of the email so you can look it over and see if anything looks off.

You could try a Track Token activity too, but it might truncate one with that much data so you wouldn't see all of the contents.

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replied on August 23, 2017

Thanks for the reply Jason.

I managed to find the cause of that specific error and resolved it. The process then ran and it became clear that there is a limitation of 200 recipient address that can be sent in one go. The Workflow sent to the first 200 in my list and then reported a error message for the remaining addresses.

I changed the WF to do them in batches of 199, and then it was happy and completed the entire run in 1 min.

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replied on August 23, 2017

You might want to look at using distribution groups if you have any applicable ones configured for the target users/groups.

For example, we have staff distribution groups for based on region and can send an email to well over 1000 users with a handful of addresses.

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replied on August 23, 2017

Thanks Jason. Yes I agree, that would be the best way to go. In this situation however these emails was received in a export from our AS400 FMS system where the data was kept. Unfortunately none of them exist on our exchange or have been captured there before. Luckily this is a once off exercise but should i become a regular request I will definitely be looking at getting them setup on a distribution list.

Thanks once again for the response.

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Is there a limit to the number of email address one can specify using the LF email activity

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