Check out Pure360 – from their website it seems like they have both SMS services and integration with Salesforce. I can’t vouch for their service as I’ve never used it, although I did used to live about two minutes from their offices in Brighton! The other option would be something like Infusionsoft. I’m pretty certain that they have SMS functionality, and would be very surprised if they didn’t integrate with Salesforce.
Have a clear purpose for the blast. Email blasting customers or partners is not an arbitrary task. Each blast should have a concise purpose before you begin to draft it. Determine what you're trying to deliver and how you want the recipients to react to the email. The blast's purpose could be enticing customers to purchase something, updating employees on a new project or initiative, or a newsletter to recap the month's events. Once you determine the purpose of the blast, you can work on making the message more clear to your recipients.[1]
When you create a Mailchimp account, you have the option to select a Free or paid plan. This option allows you to experiment with our user-friendly tools and figure out how to best use our all-in-one Marketing Platform. So if you’re just getting off the ground, you can learn to market smarter so you can grow faster. You can remain on the Free plan as long as you have 2,000 or fewer contacts in your audience.
Watch the growth of your list. Is your email list growing or shrinking? If more people are unsubscribing than are registering to your list, it's a good sign that you need an entire strategic overhaul on your email policies. If there are a lot of people unsubscribing it could be because your content is not relevant to the people that you're sending it to. In this case, try to segment your list differently or change the type of content that's being delivered through your email blasts.
Another tool built by AppSumo, List Builder is an email marketing tool that helps you build up your mailing lists. It captures (engaged) visitors right before they are about to leave with pops that are triggered by clicks and timers. It is a very easy tool to use as it has a drag-and-drop functionality and features that can be customised to your brand.
ToutApp is a great email marketing tool specifically for sales teams. It enables users to create emails fast and follow up on email marketing promotions (via a unique email and marketing tracking feature). Users can view opens, clicks on attachments (e.g. PDFs) and website links and when they’ve responded to an email all in one dashboard. ToutApp also functions as a lead nurturing tool as it allows sales teams to send content to the right people at the right time.

A safe email testing tool for staging and development, Mailtrap enables you to inspect and debug your email samples before delivering them to your customers. It helps you keep your email messages clear of spam filters and test HTML elements for compatibility with popular email clients. The Mailtrap blog also offers helpful information such as reviews of email deliverability testing tools.
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