Maintain and expand the database

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To avoid blocking, you need to clear the list of addresses before sending the first emails. Here's what you can do:

Delete email addresses of employees who no longer work or have changed email
Remove duplicate addresses
Correct spelling errors in domains, remove addresses with non-existent domains
Exclude "general" addresses, such as [email protected]
Check the database with a validator service
email spam complaints

If the list of addresses is already "working", blocking for spam is not so scary. In a working database, addresses unsubscribe from time to time or become inactive, but there are usually no more than 1% of them, and such a database will not be blocked.

But do not forget to constantly keep your list of overseas chinese in worldwide phone number data clean! If you know that a manager has quit, delete the address. If you see that the status of letters is "not delivered", do the same. To remember to clean the database, the easiest way is to determine the regularity of this task and assign a person responsible for it.

In the process of work, you will replenish the database of addresses. We recommend using a two-stage subscription (double opt-in) for this. The first stage - the client subscribes to the mailing list on the company's website. The second - receives an automatic letter asking to confirm their address and consent to receive the mailing. This method has many advantages:

Less unsubscribes
Higher open rates and conversion rates for emails
Non-existent addresses are filtered (and the probability of blocking for spam is lower)
The confirmation email may also contain information about your service or product - your first step in communicating with the client.
You have collected and cleaned the database, uploaded it to the platform. What next, can you send letters? Perhaps. But think about how diversified your product is, and how homogeneous your recipients are in their interests and needs.
Email database replenishment
G. Segmentation

Segmentation of the address base is more often discussed in B2C — more services and goods, consumer groups. But in B2B we also recommend segmenting clients for mailings. If your products have different target audiences, why send mailings "to everyone"? The client will receive irrelevant information once, twice, three times. And then they will unsubscribe or, even worse, send it to spam. And we have put so much effort into the service's trust in our database!

There is nothing complicated in segmenting the address base. Send letters to those who really need them, and get the result you planned.