With the invention of email mentoring tools, you can check the mail status which gives the information of guarantee email delivery.
>>>Drip outranks most of its competitors, as it offers several intelligent marketing automation tools, list groups, smarter email segmenting, and a plethora of amazing features that can allow you to contact specific audiences in your email list. 
>>>While other services may charge more as your list of subscribers grow, GetResponse is known to keep subscription charges stable irrespective of the size of the list.
>>>Doing so proves extremely convenient in generating targeted mailing lists or selections based on factors like interest, place, position, or customer category.
>>>It is best in terms of the advertiser who displays his products in demand to a pool of audience who are actively waiting to buy the same product. Google not only rewards the highest bidders with ad space but also with quality ads.
>>>You can manage all your mails remotely while offering your street address as well as PO Box address. Your privacy is protected while your mails are delivered. More than a few users can be added to your PostScan Mail account.
>>>