CODEWITHSUNDEEP
springimapspring-integration
Urbanleg
Urbanleg

Reputation: 6532

Spring integration imap - multiple email accounts from the same domain

I'm using spring's imap mechanism in order to recieve emails from my account into my server.

this works like a charm.

Anyhow, a new requirmemnt came up - instead of listening to a single email account i will have to listen on a multiple number of accounts.

Iv'e tried creating a new channel for each of these account. it WORKS!

problem is that each channel i added meaning a new thread running.
since i'm talking about a large number of accounts it is quiet an issue.

My question is:

Since all the email accounts (I would like to listen to) are in the same domain i.e: [email protected] [email protected] [email protected] ....

Is it possible to create a single channel with multiple accounts?

Is there any alternative for me than defining N new channels?

thanks. Nir

Upvotes: 3

Views: 1074

Answers (1)

Gary Russell
Gary Russell

Reputation: 174504

I assume you mean channel adapter, not channel (multiple channel adapters can send messages to the same channel).

No, you can't use a single connection for multiple accounts.

This is a limitation of the underlying internet mail protocols.

If you are using imap idle adapters, yes, this will not scale well because it needs a thread for each. However, if you are only talking about a few 10s of accounts, this is probably not an issue. For a much larger number of accounts, it may be better to use a polled adapter.

But, even so, unless it's a fixed number of accounts, the configuration could be burdensome (but you could programmatically spin up new adapters).

For complex scenarios like this, you may want to consider writing your own "adapter" that uses the JavaMail API directly and manages the connections in a more sophisticated way (but you still need a separate connection for each account). It wouldn't have to be a "real" adapter, just a POJO that interracts with JavaMail. Then, when you receive a message from one of the accounts, send it to a channel using a <gateway/>.

Upvotes: 5

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