Very great feature for a landline!!! Customer can text to the landline so you don't miss the business. This has been a game changer for my advertising firm. It helps me respond quicker to clients and provide better customer support to them. I have highly recommended this service to other colleagues.
Zipwhip - Zipwhip enables text messaging for landline, VoIP, and toll-free phone numbers.
ProTexting - ProTexting offers mobile marketing tools for businesses to communicate with their audience via SMS & MMS campaigns.
WikiPro - All-in-one Business to Customer Communication
ShoutOUT - All in one business texting tool to send personalized alerts, promotions, reminders, short links and marketing campaigns, for any SMEs (hotels, restaurants, education, non profits, Woocommerce, banks, healthcare, agencies, supermarkets, weddings)
Bandwidth - Bandwidth offers SIP trunking, Emergency communications, and Voice & Messaging APIs.
Trumpia - SMS Marketing and Marketing Automation software for Mass SMS, internal communications & emergency alerts. #1 Text Messaging Service used by Fortune 500s.